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  <xs:element id="abvx_DisclosureOfAccountingPolicyForNewStandardsAmendmentsAndInterpretationsIssuedByIASBButNotYetMandatoryPolicyTextBlock" abstract="false" name="DisclosureOfAccountingPolicyForNewStandardsAmendmentsAndInterpretationsIssuedByIASBButNotYetMandatoryPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfDetailedInformationAboutAssetsAcquisitionsExplanatoryTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutAssetsAcquisitionsExplanatoryTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfDetailedInformationAboutOtherReceivablesAndOtherAssetsTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutOtherReceivablesAndOtherAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfCompositionOfCashAndCashEquivalentsTableTextBlock" abstract="false" name="DisclosureOfCompositionOfCashAndCashEquivalentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfIndirectMeasurementOfConvertibleLoansInstrumentsTableTextBlock" abstract="false" name="DisclosureOfIndirectMeasurementOfConvertibleLoansInstrumentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfLeasesForLesseeTableTextBlock" abstract="false" name="DisclosureOfLeasesForLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfChangesInDerivativeFinancialInstrumentsTableTextBlock" abstract="false" name="DisclosureOfChangesInDerivativeFinancialInstrumentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfBreakdownOfTradeAndOtherPayablesTableTextBlock" abstract="false" name="DisclosureOfBreakdownOfTradeAndOtherPayablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfTaxAndEmployeeRelatedPayablesExplanatoryTableTextBlock" abstract="false" name="DisclosureOfTaxAndEmployeeRelatedPayablesExplanatoryTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfDetailedInformationOfOperatingIncomeExplanatoryTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationOfOperatingIncomeExplanatoryTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfPrincipalAuditFeesAndServicesTableTextBlock" abstract="false" name="DisclosureOfPrincipalAuditFeesAndServicesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfAverageNumberOfEmployeesTableTextBlock" abstract="false" name="DisclosureOfAverageNumberOfEmployeesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfDetailedInformationAboutFinanceIncomeCostTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutFinanceIncomeCostTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock" abstract="false" name="DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="abvx_SaleOfStockAxis" abstract="true" name="SaleOfStockAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_SaleOfStockDomain" abstract="true" name="SaleOfStockDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RegisteredDirectOfferingMember" abstract="true" name="RegisteredDirectOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BanquePubliqueDInvestissementBPIMember" abstract="true" name="BanquePubliqueDInvestissementBPIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ProceedsFromResearchTaxCredit" abstract="false" name="ProceedsFromResearchTaxCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ProceedsFromConditionalAdvances" abstract="false" name="ProceedsFromConditionalAdvances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NetProceedsFromSaleOfRoyaltyCertificates" abstract="false" name="NetProceedsFromSaleOfRoyaltyCertificates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CashAndCashEquivalentsAndOtherShortTermInvestments" abstract="false" name="CashAndCashEquivalentsAndOtherShortTermInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_A130.0MillionCrossOverFinancingFebruary2023Member" abstract="true" name="A130.0MillionCrossOverFinancingFebruary2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A49.2MillionCrossOverFinancingSeptember2022Member" abstract="true" name="A49.2MillionCrossOverFinancingSeptember2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A150.0MillionFinancingAugust2023Member" abstract="true" name="A150.0MillionFinancingAugust2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos1ConvertibleBondLoansTrancheAMember" abstract="true" name="Kreos1ConvertibleBondLoansTrancheAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos1ConvertibleBondLoansTrancheBMember" abstract="true" name="Kreos1ConvertibleBondLoansTrancheBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheAMember" abstract="true" name="KreosClaretFinancingTrancheAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OCEANEMember" abstract="true" name="OCEANEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingAndHeightsConvertibleNotesMember" abstract="true" name="KreosClaretFinancingAndHeightsConvertibleNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AmericanDepositorySharesMember" abstract="true" name="AmericanDepositorySharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_WarrantsAxis" abstract="true" name="WarrantsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_WarrantsDomain" abstract="true" name="WarrantsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosCBSAMember" abstract="true" name="KreosCBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FreeSharesAGAMember" abstract="true" name="FreeSharesAGAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinancialAgreementAmount" abstract="false" name="FinancialAgreementAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_EquityIssuancePercentageOfCurrentShareCapital" abstract="false" name="EquityIssuancePercentageOfCurrentShareCapital" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_EquityIssuanceSubscriptionPricePerShare" abstract="false" name="EquityIssuanceSubscriptionPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_NumberOfOtherShareWarrantsRepurchased" abstract="false" name="NumberOfOtherShareWarrantsRepurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfShareBasedCompensationPlansIssued" abstract="false" name="NumberOfShareBasedCompensationPlansIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_FinancialAgreementNumberOfTransactions" abstract="false" name="FinancialAgreementNumberOfTransactions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BorrowingsMaximumBorrowingCapacity" abstract="false" name="BorrowingsMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_AggregateExercisePriceOtherEquityInstrumentsGranted" abstract="false" name="AggregateExercisePriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ProceedsFromBorrowingsNetOfRefinancingOfExistingIndebteness" abstract="false" name="ProceedsFromBorrowingsNetOfRefinancingOfExistingIndebteness" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IssuanceOfOtherShareWarrants" abstract="false" name="IssuanceOfOtherShareWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfSharesReceivedPerADS" abstract="false" name="NumberOfSharesReceivedPerADS" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_IssueOfEquityOfferingPricePerShare" abstract="false" name="IssueOfEquityOfferingPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_ProceedsFromIssuingSharesOtherThanThroughExerciseOfWarrants" abstract="false" name="ProceedsFromIssuingSharesOtherThanThroughExerciseOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_AGA2024Member" abstract="true" name="AGA2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20246Member" abstract="true" name="AGA20246Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20241Member" abstract="true" name="BSA20241Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TranchesAxis" abstract="true" name="TranchesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_TranchesDomain" abstract="true" name="TranchesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheOneMember" abstract="true" name="TrancheOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheTwoMember" abstract="true" name="TrancheTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheThreeMember" abstract="true" name="TrancheThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheBMember" abstract="true" name="KreosClaretFinancingTrancheBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheCMember" abstract="true" name="KreosClaretFinancingTrancheCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheBAndCMember" abstract="true" name="KreosClaretFinancingTrancheBAndCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RNPVIRConditionalAdvanceBPIMember" abstract="true" name="RNPVIRConditionalAdvanceBPIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_CARENAConditionalAdvanceBPIMember" abstract="true" name="CARENAConditionalAdvanceBPIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RNPVIRConditionalAdvanceBPIAndCARENAConditionalAdvanceBPIMember" abstract="true" name="RNPVIRConditionalAdvanceBPIAndCARENAConditionalAdvanceBPIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AtTheMarketATMProgramMember" abstract="true" name="AtTheMarketATMProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NumberOfFreeSharesPlansIssued" abstract="false" name="NumberOfFreeSharesPlansIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementVestingPercentage" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementVestingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementVestingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_PercentageOfConditionalAdvancesWaived" abstract="false" name="PercentageOfConditionalAdvancesWaived" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfADSPerOrdinaryShares" abstract="false" name="NumberOfADSPerOrdinaryShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_ExpectedProceedsFromShareIssuance" abstract="false" name="ExpectedProceedsFromShareIssuance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ExpectedProceedsFromShareIssuanceShelfRegistration" abstract="false" name="ExpectedProceedsFromShareIssuanceShelfRegistration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ShareSubscriptionWarrantsBSAMember" abstract="true" name="ShareSubscriptionWarrantsBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA2025Member" abstract="true" name="AGA2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20252Member" abstract="true" name="AGA20252Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20255Member" abstract="true" name="AGA20255Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20251Member" abstract="true" name="AGA20251Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BoardMemberMember" abstract="true" name="BoardMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosABCBSAMember" abstract="true" name="KreosABCBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingBAndCMember" abstract="true" name="KreosClaretFinancingBAndCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_SharePrice1" abstract="false" name="SharePrice1" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="abvx_NetProceedsFromIssueOfOrdinaryShares" abstract="false" name="NetProceedsFromIssueOfOrdinaryShares" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfConvertibleNotesConverted" abstract="false" name="NumberOfConvertibleNotesConverted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BorrowingsFixedConversionPrice" abstract="false" name="BorrowingsFixedConversionPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_MajorShareBasedTransactionsMember" abstract="true" name="MajorShareBasedTransactionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_CSOSettlementAgreementMember" abstract="true" name="CSOSettlementAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationContractualSeveranceIndemnity" abstract="false" name="KeyManagementPersonnelCompensationContractualSeveranceIndemnity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfSharesWaived" abstract="false" name="NumberOfSharesWaived" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfSharesWithPerformanceConditionsWaived" abstract="false" name="NumberOfSharesWithPerformanceConditionsWaived" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfSharesLapsed" abstract="false" name="NumberOfSharesLapsed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_ResearchAndDevelopmentCostsRecognitionInitialMeasurementNumberOfCriterias" abstract="false" name="ResearchAndDevelopmentCostsRecognitionInitialMeasurementNumberOfCriterias" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_IndustrialMaterialsAndEquipmentMember" abstract="true" name="IndustrialMaterialsAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TechnicalFacilitiesMember" abstract="true" name="TechnicalFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FurnitureMember" abstract="true" name="FurnitureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ContributionToGroupsLiabilitiesPercentage" abstract="false" name="ContributionToGroupsLiabilitiesPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ContributionToGroupsNetProfitsLossesPercentage" abstract="false" name="ContributionToGroupsNetProfitsLossesPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ContributionToGroupsAssetsPercentage" abstract="false" name="ContributionToGroupsAssetsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfOperatingSegment" abstract="false" name="NumberOfOperatingSegment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_WittycelSASABX196Member" abstract="true" name="WittycelSASABX196Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_SplicosSASABX464Member" abstract="true" name="SplicosSASABX464Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_PrincipalAgreementsAxis" abstract="true" name="PrincipalAgreementsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_PrincipalAgreementsDomain" abstract="true" name="PrincipalAgreementsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ExclusiveLicensingContractWithTheScrippsResearchInstituteUniversityOfChicagoAndBrighamYoungUniversityMember" abstract="true" name="ExclusiveLicensingContractWithTheScrippsResearchInstituteUniversityOfChicagoAndBrighamYoungUniversityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ExclusiveLicensingAgreementWithCNRSUniversityOfMontpellierAndInstitutCurieMember" abstract="true" name="ExclusiveLicensingAgreementWithCNRSUniversityOfMontpellierAndInstitutCurieMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AssetsAcquisitionsAxis" abstract="true" name="AssetsAcquisitionsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_AssetsAcquisitionsDomain" abstract="true" name="AssetsAcquisitionsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ProsynergiaMember" abstract="true" name="ProsynergiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_CollaborationAgreementsDevelopmentMilestonePaymentINDApproval" abstract="false" name="CollaborationAgreementsDevelopmentMilestonePaymentINDApproval" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CollaborationAgreementsDevelopmentMilestonePaymentPhase2" abstract="false" name="CollaborationAgreementsDevelopmentMilestonePaymentPhase2" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TechnologyBasedIntangibleAssetsAssetsAcquisitions" abstract="false" name="TechnologyBasedIntangibleAssetsAssetsAcquisitions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_FurnitureAndComputerEquipmentMember" abstract="true" name="FurnitureAndComputerEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_LeaseFacilitiesParisMember" abstract="true" name="LeaseFacilitiesParisMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DecreaseThroughReassessmentOfLeaseTermRightOfUseAssets" abstract="false" name="DecreaseThroughReassessmentOfLeaseTermRightOfUseAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NonCurrentAdvancesToCROContractsUndiscountedAmount" abstract="false" name="NonCurrentAdvancesToCROContractsUndiscountedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherNonCurrentMiscellaneousFinancialAssets" abstract="false" name="OtherNonCurrentMiscellaneousFinancialAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CurrentAdvancesToCROContracts" abstract="false" name="CurrentAdvancesToCROContracts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherCurrentInvestments" abstract="false" name="OtherCurrentInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DiscountRateAppliedToLongTermAdvances" abstract="false" name="DiscountRateAppliedToLongTermAdvances" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_PaymentsForAdvancesMadeToContractResearchOrganizationsUndiscountedAmount" abstract="false" name="PaymentsForAdvancesMadeToContractResearchOrganizationsUndiscountedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NonCurrentPrepaidExpenses" abstract="false" name="NonCurrentPrepaidExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CurrentResearchTaxCreditReceivables" abstract="false" name="CurrentResearchTaxCreditReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CurrentReceivablesForEmployeeBenefits" abstract="false" name="CurrentReceivablesForEmployeeBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CurrentReceivablesFromCreditNotes" abstract="false" name="CurrentReceivablesFromCreditNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfOtherReceivablesAndOtherAssetsTable" abstract="true" name="DisclosureOfOtherReceivablesAndOtherAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DeferredFinancingCostsNettingMember" abstract="true" name="DeferredFinancingCostsNettingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfOtherReceivablesAndOtherAssetsLineItems" abstract="true" name="DisclosureOfOtherReceivablesAndOtherAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_CurrentPrepaidExpensesRelatedToCRO" abstract="false" name="CurrentPrepaidExpensesRelatedToCRO" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ReclassificationOfPrepaidExpensesToCarryingValueOfDebtComponent" abstract="false" name="ReclassificationOfPrepaidExpensesToCarryingValueOfDebtComponent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfCashAndCashEquivalentsTable" abstract="true" name="DisclosureOfCashAndCashEquivalentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DisclosureOfCashAndCashEquivalentsLineItems" abstract="true" name="DisclosureOfCashAndCashEquivalentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable" abstract="true" name="DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_OtherFinancialAssetsMember" abstract="true" name="OtherFinancialAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OtherReceivablesAndAssetsMember" abstract="true" name="OtherReceivablesAndAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_CashAndCashEquivalentMember" abstract="true" name="CashAndCashEquivalentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NonCurrentAdvancesToCROContractsMember" abstract="true" name="NonCurrentAdvancesToCROContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NonCurrentFinancialLiabilitiesMember" abstract="true" name="NonCurrentFinancialLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheABAndCMember" abstract="true" name="KreosClaretFinancingTrancheABAndCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ConditionalAdvancesAndPGELoanMember" abstract="true" name="ConditionalAdvancesAndPGELoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_PretGarantiParLEtatPGEMember" abstract="true" name="PretGarantiParLEtatPGEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EbolaConditionalAdvanceBPIMember" abstract="true" name="EbolaConditionalAdvanceBPIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_CurrentFinancialLiabilitiesMember" abstract="true" name="CurrentFinancialLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TradePayablesAndOtherCurrentLiabilitiesMember" abstract="true" name="TradePayablesAndOtherCurrentLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems" abstract="true" name="DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_NumberOfTranches" abstract="false" name="NumberOfTranches" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_NumberOfTreasurySharesHeld" abstract="false" name="NumberOfTreasurySharesHeld" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_KreosABSAMember" abstract="true" name="KreosABSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosBBSAMember" abstract="true" name="KreosBBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20241AndBSA20242Member" abstract="true" name="BSA20241AndBSA20242Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NumberOfWarrantsExercised" abstract="false" name="NumberOfWarrantsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_OtherShareWarrantsSubscriptionPricePerShare" abstract="false" name="OtherShareWarrantsSubscriptionPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_ShareWarrantsSubscriptionPricePerShare" abstract="false" name="ShareWarrantsSubscriptionPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_FoundersShareSubscriptionWarrantsBCEMember" abstract="true" name="FoundersShareSubscriptionWarrantsBCEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20161Member" abstract="true" name="BCE20161Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20171Member" abstract="true" name="BCE20171Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20172Member" abstract="true" name="BCE20172Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20174Member" abstract="true" name="BCE20174Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20175Member" abstract="true" name="BCE20175Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20181Member" abstract="true" name="BCE20181Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20184Member" abstract="true" name="BCE20184Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCE20185Member" abstract="true" name="BCE20185Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_MaximumNumberOfOtherEquityInstrumentsToBeIssuedInShareBasedPaymentArrangementIfAllConditionsAreMet" abstract="false" name="MaximumNumberOfOtherEquityInstrumentsToBeIssuedInShareBasedPaymentArrangementIfAllConditionsAreMet" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_TrancheFourMember" abstract="true" name="TrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheFiveMember" abstract="true" name="TrancheFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheSixMember" abstract="true" name="TrancheSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BCEExceptBCE20142Member" abstract="true" name="BCEExceptBCE20142Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20251AndBSA20252Member" abstract="true" name="BSA20251AndBSA20252Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20253Member" abstract="true" name="BSA20253Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20231Member" abstract="true" name="AGA20231Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20232Member" abstract="true" name="AGA20232Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20233AGA20234AndAGA20235Member" abstract="true" name="AGA20233AGA20234AndAGA20235Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20233AndAGA20234Member" abstract="true" name="AGA20233AndAGA20234Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20235Member" abstract="true" name="AGA20235Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20241Member" abstract="true" name="AGA20241Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20242Member" abstract="true" name="AGA20242Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20243Member" abstract="true" name="AGA20243Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20244AGA20245AndAGA20246Member" abstract="true" name="AGA20244AGA20245AndAGA20246Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20247Member" abstract="true" name="AGA20247Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20241AGE20242AGA20243AGA20244AGA20245AndAGA20247Member" abstract="true" name="AGA20241AGE20242AGA20243AGA20244AGA20245AndAGA20247Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20253Member" abstract="true" name="AGA20253Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20254Member" abstract="true" name="AGA20254Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20256Member" abstract="true" name="AGA20256Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20257Member" abstract="true" name="AGA20257Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20258Member" abstract="true" name="AGA20258Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20251AGA20253AGA20254AGA20256AGA20257AndAGA20258Member" abstract="true" name="AGA20251AGA20253AGA20254AGA20256AGA20257AndAGA20258Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FormerChiefExecutiveOfficerMember" abstract="true" name="FormerChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EmployeeMember" abstract="true" name="EmployeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementVestingPercentagePerMonth" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementVestingPercentagePerMonth" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementPerformanceConditionsMinimumFinancing" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementPerformanceConditionsMinimumFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementChangeOfControlMinimumThreshold" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementChangeOfControlMinimumThreshold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfOtherEquityInstrumentsGrantedSubjectToNonMarketPerformanceCondition" abstract="false" name="NumberOfOtherEquityInstrumentsGrantedSubjectToNonMarketPerformanceCondition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_VestingRequirementsForShareBasedPaymentArrangementServicePeriod" abstract="false" name="VestingRequirementsForShareBasedPaymentArrangementServicePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BSA201511Member" abstract="true" name="BSA201511Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA201512Member" abstract="true" name="BSA201512Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20171Member" abstract="true" name="BSA20171Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20181Member" abstract="true" name="BSA20181Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20242Member" abstract="true" name="BSA20242Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20251Member" abstract="true" name="BSA20251Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BSA20252Member" abstract="true" name="BSA20252Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_UnderlyingShareFairValueOtherEquityInstrumentsGranted" abstract="false" name="UnderlyingShareFairValueOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_EquityInstrumentFairValueOtherEquityInstrumentsGranted" abstract="false" name="EquityInstrumentFairValueOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_EquityInstrumentPriceOtherEquityInstrumentsGranted" abstract="false" name="EquityInstrumentPriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_EquityInstrumentStrikePriceOtherEquityInstrumentsGranted" abstract="false" name="EquityInstrumentStrikePriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_RiskFreeInterestRateOtherEquityInstrumentsGranted" abstract="false" name="RiskFreeInterestRateOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ExpectedMaturityOtherEquityInstrumentsGranted" abstract="false" name="ExpectedMaturityOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_ExpectedVolatilityOtherEquityInstrumentsGranted" abstract="false" name="ExpectedVolatilityOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_AGA20233Member" abstract="true" name="AGA20233Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20234Member" abstract="true" name="AGA20234Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20244Member" abstract="true" name="AGA20244Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AGA20245Member" abstract="true" name="AGA20245Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TranchesOneToFourMember" abstract="true" name="TranchesOneToFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ExpenseFromEquitySettledShareBasedPaymentTransactionsSocialTaxes" abstract="false" name="ExpenseFromEquitySettledShareBasedPaymentTransactionsSocialTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_Borrowings1Member" abstract="true" name="Borrowings1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos1ClaretBondLoansMember" abstract="true" name="Kreos1ClaretBondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesMember" abstract="true" name="ConvertibleLoansNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretMinimumReturnIndemnificationsMember" abstract="true" name="KreosClaretMinimumReturnIndemnificationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingBSAMember" abstract="true" name="KreosClaretFinancingBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesMember" abstract="true" name="OtherFinancialLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ConditionalAdvancesMember" abstract="true" name="ConditionalAdvancesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RoyaltyCertificatesMember" abstract="true" name="RoyaltyCertificatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosClaretFinancingSeniorSecuredNonConvertibleLoansMember" abstract="true" name="KreosClaretFinancingSeniorSecuredNonConvertibleLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos1BondLoansMember" abstract="true" name="Kreos1BondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EuropeanCentralBankBaseRateMember" abstract="true" name="EuropeanCentralBankBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_KreosABBSAMember" abstract="true" name="KreosABBSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_MarketRateMeasurementInputMember" abstract="true" name="MarketRateMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_SharePriceMeasurementInputMember" abstract="true" name="SharePriceMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RiskFreeInterestRateMeasurementInputMember" abstract="true" name="RiskFreeInterestRateMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinalRedemptionScenarioProbabilityMeasurementInputMember" abstract="true" name="FinalRedemptionScenarioProbabilityMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ExpiryScenarioProbablityMeasurementInputMember" abstract="true" name="ExpiryScenarioProbablityMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BlackScholesModelMember" abstract="true" name="BlackScholesModelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_MonteCarloModel1Member" abstract="true" name="MonteCarloModel1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RepaymentsOfBondLoans" abstract="false" name="RepaymentsOfBondLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BorrowingsNumberOfTranches" abstract="false" name="BorrowingsNumberOfTranches" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BorrowingsMaximumBorrowingCapacityPerTranche" abstract="false" name="BorrowingsMaximumBorrowingCapacityPerTranche" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BorrowingsEarlyRepaymentDiscountRate" abstract="false" name="BorrowingsEarlyRepaymentDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_BorrowingsExitFeePercentage" abstract="false" name="BorrowingsExitFeePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_BorrowingsDebtToMarketCapitalizationRatio" abstract="false" name="BorrowingsDebtToMarketCapitalizationRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_BorrowingsPerformanceConditionsMinimumFinancing" abstract="false" name="BorrowingsPerformanceConditionsMinimumFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BorrowingsBasisInterestRate" abstract="false" name="BorrowingsBasisInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfWarrantsGranted" abstract="false" name="NumberOfWarrantsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_ExercisePriceOtherEquityInstrumentsGranted" abstract="false" name="ExercisePriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_ExercisePricePercentageOfPremiumOver15DayVWAPOtherEquityInstrumentsGranted" abstract="false" name="ExercisePricePercentageOfPremiumOver15DayVWAPOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ExercisePricePercentageOf15DayWVAPOtherEquityInstrumentsGranted" abstract="false" name="ExercisePricePercentageOf15DayWVAPOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfInstrumentsGrantedOtherEquityInstrumentsPercentageExercisableImmediately" abstract="false" name="NumberOfInstrumentsGrantedOtherEquityInstrumentsPercentageExercisableImmediately" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_NumberOfInstrumentsGrantedOtherEquityInstrumentsRemainingPercentageExercisable" abstract="false" name="NumberOfInstrumentsGrantedOtherEquityInstrumentsRemainingPercentageExercisable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_OtherShareWarrantsExercisePeriod" abstract="false" name="OtherShareWarrantsExercisePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_NumberOfWarrantsRepurchased" abstract="false" name="NumberOfWarrantsRepurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_AggregateFairValueOtherEquityInstrumentsOutstanding" abstract="false" name="AggregateFairValueOtherEquityInstrumentsOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BorrowingsDeposit" abstract="false" name="BorrowingsDeposit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BorrowingsDiscountRate" abstract="false" name="BorrowingsDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abvx_BorrowingsExitFeeAmount" abstract="false" name="BorrowingsExitFeeAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotes" abstract="false" name="ConvertibleLoansNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesCarryingAmountOfTheEquityComponent" abstract="false" name="ConvertibleLoansNotesCarryingAmountOfTheEquityComponent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_AmountOfReasonablyPossibleIncreaseInUnobservableInputLiabilities" abstract="false" name="AmountOfReasonablyPossibleIncreaseInUnobservableInputLiabilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_ExpiryScenarioPeriodOtherEquityInstrumentsGranted" abstract="false" name="ExpiryScenarioPeriodOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_MinimalReturnMeasurementInputMember" abstract="true" name="MinimalReturnMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinalRedemptionProbabilityWeightedPresentValueOfShortfallPaymentMeasurementInputMember" abstract="true" name="FinalRedemptionProbabilityWeightedPresentValueOfShortfallPaymentMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TenderOfferProbabilityWeightedPresentValueOfShortfallPaymentMeasurementInputMember" abstract="true" name="TenderOfferProbabilityWeightedPresentValueOfShortfallPaymentMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinalRedemptionProbabilityWeightedFairValueWithMRIMeasurementInputMember" abstract="true" name="FinalRedemptionProbabilityWeightedFairValueWithMRIMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinalRedemptionProbabilityWeightedFairValueWithoutMRIMeasurementInputMember" abstract="true" name="FinalRedemptionProbabilityWeightedFairValueWithoutMRIMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_FinalRedemptionFairValueOfMRIMeasurementInputMember" abstract="true" name="FinalRedemptionFairValueOfMRIMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TenderOfferFairValueOfMRIMeasurementInputMember" abstract="true" name="TenderOfferFairValueOfMRIMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AmortizedCostEIRMethodMember" abstract="true" name="AmortizedCostEIRMethodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheBMember" abstract="true" name="TrancheBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TrancheCMember" abstract="true" name="TrancheCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfWarrantsArrangementsTable" abstract="true" name="DisclosureOfWarrantsArrangementsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_ExercisePricePerShareMeasurementInputMember" abstract="true" name="ExercisePricePerShareMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DrawdownProbablityMeasurementInputMember" abstract="true" name="DrawdownProbablityMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_VolatilityForSharesMeasurementInputExpiryMember" abstract="true" name="VolatilityForSharesMeasurementInputExpiryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_VolatilityForSharesMeasurementInputTenderOfferMember" abstract="true" name="VolatilityForSharesMeasurementInputTenderOfferMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ExpectedDividendMeasurementInputMember" abstract="true" name="ExpectedDividendMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RiskFreeInterestRateMeasurementInputExpiryMember" abstract="true" name="RiskFreeInterestRateMeasurementInputExpiryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RiskFreeInterestRateMeasurementInputTenderOfferMember" abstract="true" name="RiskFreeInterestRateMeasurementInputTenderOfferMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfWarrantsArrangementsLineItems" abstract="true" name="DisclosureOfWarrantsArrangementsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_NumberOfProbabilityWeightedScenarios" abstract="false" name="NumberOfProbabilityWeightedScenarios" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_NumberOfWarrantsOutstanding" abstract="false" name="NumberOfWarrantsOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfWarrantsOutstandingSubjectToNonMarketPerformanceCondition" abstract="false" name="NumberOfWarrantsOutstandingSubjectToNonMarketPerformanceCondition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_HeightsConvertibleNotesTrancheAMember" abstract="true" name="HeightsConvertibleNotesTrancheAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_HeightsConvertibleNotesTrancheBMember" abstract="true" name="HeightsConvertibleNotesTrancheBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_VoluntaryConversionScenarioProbabilityMeasurementInputMember" abstract="true" name="VoluntaryConversionScenarioProbabilityMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NetProceedsFromConvertibleLoansNotes" abstract="false" name="NetProceedsFromConvertibleLoansNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfConvertibleNotesIssued" abstract="false" name="NumberOfConvertibleNotesIssued" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesNominalValue" abstract="false" name="ConvertibleLoansNotesNominalValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesPeriod" abstract="false" name="ConvertibleLoansNotesPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesNumberOfSeparateClosings" abstract="false" name="ConvertibleLoansNotesNumberOfSeparateClosings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BorrowingsNumberOfQuarterlyInstallments" abstract="false" name="BorrowingsNumberOfQuarterlyInstallments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BorrowingsMaturityDeferralPeriod" abstract="false" name="BorrowingsMaturityDeferralPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BorrowingsPercentageOfMarketPrice" abstract="false" name="BorrowingsPercentageOfMarketPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_BorrowingsMarketPriceNumberOfDaysWithLowestDailyVWAP" abstract="false" name="BorrowingsMarketPriceNumberOfDaysWithLowestDailyVWAP" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BorrowingsMarketPriceNumberOfTradingDays" abstract="false" name="BorrowingsMarketPriceNumberOfTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_IssuancePricePercentageOfDiscountTo15DayWVAP" abstract="false" name="IssuancePricePercentageOfDiscountTo15DayWVAP" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesSettlementInSharesPercentageOfFairMarketValue" abstract="false" name="ConvertibleLoansNotesSettlementInSharesPercentageOfFairMarketValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_EquityIssuanceCashCarveOut" abstract="false" name="EquityIssuanceCashCarveOut" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesEarlyRedemptionAmountPercentageOfOutstandongPrincipal" abstract="false" name="ConvertibleLoansNotesEarlyRedemptionAmountPercentageOfOutstandongPrincipal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_GainsArisingFromRecognitionOfFinancialLiabilities" abstract="false" name="GainsArisingFromRecognitionOfFinancialLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_UnrecognitionDayOneGainOfFinancialLiabilities" abstract="false" name="UnrecognitionDayOneGainOfFinancialLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesConversionOptionMaximumPeriodPriorToMaturityDate" abstract="false" name="ConvertibleLoansNotesConversionOptionMaximumPeriodPriorToMaturityDate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_LossesOnFinancialLiabilitiesAssetsAtFairValueThroughProfitOrLoss" abstract="false" name="LossesOnFinancialLiabilitiesAssetsAtFairValueThroughProfitOrLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConversionPricePerShareMeasurementInputMember" abstract="true" name="ConversionPricePerShareMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_InitialPriceLimitMeasurementInputMember" abstract="true" name="InitialPriceLimitMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EarlyRedemptionAmountMeasurementInputMember" abstract="true" name="EarlyRedemptionAmountMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_MonteCarloModelIFRSMember" abstract="true" name="MonteCarloModelIFRSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NumberOfConvertibleNotesOutstanding" abstract="false" name="NumberOfConvertibleNotesOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_AggregateFairValueConvertibleNotes" abstract="false" name="AggregateFairValueConvertibleNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_Kreos1NonConvertibleBondLoansMember" abstract="true" name="Kreos1NonConvertibleBondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos1ConvertibleBondLoansMember" abstract="true" name="Kreos1ConvertibleBondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos12BondLoansMember" abstract="true" name="Kreos12BondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_NumberOfShareWarrantsIssued" abstract="false" name="NumberOfShareWarrantsIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfSharesPerShareWarrant" abstract="false" name="NumberOfSharesPerShareWarrant" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_NumberOfOtherShareWarrantsConverted" abstract="false" name="NumberOfOtherShareWarrantsConverted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_Kreos2Member" abstract="true" name="Kreos2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos2TrancheAMember" abstract="true" name="Kreos2TrancheAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_Kreos2TrancheBMember" abstract="true" name="Kreos2TrancheBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_BorrowingsAdditionalTrancheAmount" abstract="false" name="BorrowingsAdditionalTrancheAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RemeasurementPeriodAxis" abstract="true" name="RemeasurementPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_RemeasurementPeriodDomain" abstract="true" name="RemeasurementPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_After18MonthsMember" abstract="true" name="After18MonthsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_After24MonthsMember" abstract="true" name="After24MonthsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_After36MonthsMember" abstract="true" name="After36MonthsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ProceedsFromIssuingSharesAndConvertibleLoansNotes" abstract="false" name="ProceedsFromIssuingSharesAndConvertibleLoansNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConversionPriceAdjustmentPeriod" abstract="false" name="ConversionPriceAdjustmentPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BorrowingsMaturityTerm" abstract="false" name="BorrowingsMaturityTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BorrowingsMaturityExtensionTerm" abstract="false" name="BorrowingsMaturityExtensionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_BorrowingsStateGuaranteedPremium" abstract="false" name="BorrowingsStateGuaranteedPremium" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConditionalAdvances" abstract="false" name="ConditionalAdvances" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesMaximumDrawdownCapacity" abstract="false" name="OtherFinancialLiabilitiesMaximumDrawdownCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RepaymentOfExcessConditionalAdvancesClaimed" abstract="false" name="RepaymentOfExcessConditionalAdvancesClaimed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseInLeaseLiabilities" abstract="false" name="IncreaseInLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DecreaseInLeaseLiabilities" abstract="false" name="DecreaseInLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfLeaseLiabilitiesTable" abstract="true" name="DisclosureOfLeaseLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_LeaseFacilitiesBostonMember" abstract="true" name="LeaseFacilitiesBostonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_LeaseFacilitiesMontpellierMember" abstract="true" name="LeaseFacilitiesMontpellierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_LeaseFacilitiesMember" abstract="true" name="LeaseFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfLeaseLiabilitiesLineItems" abstract="true" name="DisclosureOfLeaseLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_LeaseDurationPeriod" abstract="false" name="LeaseDurationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_LeaseTacitRenewalPeriod" abstract="false" name="LeaseTacitRenewalPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_LeaseBreakClausePeriod" abstract="false" name="LeaseBreakClausePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_DecreaseInLeaseLiabilitiesThroughModificationOfTerm" abstract="false" name="DecreaseInLeaseLiabilitiesThroughModificationOfTerm" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_LeaseExtensionPeriod" abstract="false" name="LeaseExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_LeaseLiabilityPercentageOfTotal" abstract="false" name="LeaseLiabilityPercentageOfTotal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ExpenseOnLeaseLiabilities" abstract="false" name="ExpenseOnLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DepreciationExpenseLease" abstract="false" name="DepreciationExpenseLease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ExpenseRelatingToShortTermLeasesAndLowValueAssetsForWhichRecognitionExemptionHasBeenUsed" abstract="false" name="ExpenseRelatingToShortTermLeasesAndLowValueAssetsForWhichRecognitionExemptionHasBeenUsed" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ProbabilityOfSuccessMeasurementInputMember" abstract="true" name="ProbabilityOfSuccessMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_PeakPenetrationMeasurementInputMember" abstract="true" name="PeakPenetrationMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OtherLiabilitiesNumberOfTransactions" abstract="false" name="OtherLiabilitiesNumberOfTransactions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_RoyaltyCertificatePercentageOfFutureSales" abstract="false" name="RoyaltyCertificatePercentageOfFutureSales" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_RoyaltyCertificateMaximumAmount" abstract="false" name="RoyaltyCertificateMaximumAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RoyaltyCertificatesEIR" abstract="false" name="RoyaltyCertificatesEIR" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughAmortizationCostRemeasurementLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughAmortizationCostRemeasurementLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_InterestExpenseOnRoyaltyCertificatesIncludingTheUnwindingOfDiscount" abstract="false" name="InterestExpenseOnRoyaltyCertificatesIncludingTheUnwindingOfDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_UnwindingOfDiscountOnRoyalties" abstract="false" name="UnwindingOfDiscountOnRoyalties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInCarryingValueDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities" abstract="false" name="IncreaseDecreaseInCarryingValueDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInCarryingValueDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities" abstract="false" name="IncreaseDecreaseInCarryingValueDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_UnobservableInputLiabilitiesDiscountRate" abstract="false" name="UnobservableInputLiabilitiesDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abvx_AmountOfReasonablyPossibleDecreaseInUnobservableInputLiabilities" abstract="false" name="AmountOfReasonablyPossibleDecreaseInUnobservableInputLiabilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="abvx_IncreaseThroughProceedsLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseThroughProceedsLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DecreaseThroughRepaymentsLiabilitiesArisingFromFinancingActivities" abstract="false" name="DecreaseThroughRepaymentsLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DecreaseThroughInterestPaidLiabilitiesArisingFromFinancingActivities" abstract="false" name="DecreaseThroughInterestPaidLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughClassificationOfEmbeddedDerivativesAsSeparateFinancialInstrumentsLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughClassificationOfEmbeddedDerivativesAsSeparateFinancialInstrumentsLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughGainLossOnRecognitionDerecognitionLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughGainLossOnRecognitionDerecognitionLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughRecognitionOfEarnOutLiabilityLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughRecognitionOfEarnOutLiabilityLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughSubsidiesLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughSubsidiesLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseThroughConversionIntoSharesLiabilitiesArisingFromFinancingActivities" abstract="false" name="IncreaseDecreaseThroughConversionIntoSharesLiabilitiesArisingFromFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KreosClaretFinancingTrancheABMember" abstract="true" name="KreosClaretFinancingTrancheABMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OceaneConversionOptionMember" abstract="true" name="OceaneConversionOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RepurchaseOfDerivativeInstruments" abstract="false" name="RepurchaseOfDerivativeInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_GrossProceedsFromNonConvertibleLoansNotes" abstract="false" name="GrossProceedsFromNonConvertibleLoansNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IssuanceOfDerivativeInstruments" abstract="false" name="IssuanceOfDerivativeInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ExerciseOfDerivativeInstruments" abstract="false" name="ExerciseOfDerivativeInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KreosClaretBondLoansMember" abstract="true" name="KreosClaretBondLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ConvertibleLoansNotesUndiscountedCashFlows" abstract="false" name="ConvertibleLoansNotesUndiscountedCashFlows" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_ConditionalAdvancesUndiscountedCashFlows" abstract="false" name="ConditionalAdvancesUndiscountedCashFlows" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RoyaltyCertificatesUndiscountedCashFlows" abstract="false" name="RoyaltyCertificatesUndiscountedCashFlows" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_FinancialLiabilitiesUndiscountedCashFlows" abstract="false" name="FinancialLiabilitiesUndiscountedCashFlows" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RoyaltyCertificateExpirationPeriod" abstract="false" name="RoyaltyCertificateExpirationPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_OtherEmployeesMember" abstract="true" name="OtherEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ActuarialAssumptionOfExpectedRatesOfTurnover" abstract="false" name="ActuarialAssumptionOfExpectedRatesOfTurnover" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ActuarialAssumptionOfExpectedRatesOfTurnoverAverageExitRate" abstract="false" name="ActuarialAssumptionOfExpectedRatesOfTurnoverAverageExitRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_ActuarialAssumptionOfEmployeeContributionRate" abstract="false" name="ActuarialAssumptionOfEmployeeContributionRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_OtherCurrentPayablesIncludingAdjustments" abstract="false" name="OtherCurrentPayablesIncludingAdjustments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CurrentPayablesOnOtherTaxAndRelatedPayments" abstract="false" name="CurrentPayablesOnOtherTaxAndRelatedPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncomeFromResearchTaxCredit" abstract="false" name="IncomeFromResearchTaxCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncomeFromDepositaryServiceFees" abstract="false" name="IncomeFromDepositaryServiceFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfOperatingIncomeTable" abstract="true" name="DisclosureOfOperatingIncomeTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_CIRTaxYearAxis" abstract="true" name="CIRTaxYearAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_CIRTaxYearDomain" abstract="true" name="CIRTaxYearDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A2021TaxYearMember" abstract="true" name="A2021TaxYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A2022TaxYearMember" abstract="true" name="A2022TaxYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A2023TaxYearMember" abstract="true" name="A2023TaxYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_A2024TaxYearMember" abstract="true" name="A2024TaxYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfOperatingIncomeLineItems" abstract="true" name="DisclosureOfOperatingIncomeLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_SalesAndMarketingExpenseMember" abstract="true" name="SalesAndMarketingExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ResearchAndDevelopmentExpensesMember" abstract="true" name="ResearchAndDevelopmentExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_SubContractingStudiesAndResearchExpenses" abstract="false" name="SubContractingStudiesAndResearchExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IntellectualPropertyFees" abstract="false" name="IntellectualPropertyFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_GeneralAndAdministrativeExpensesMember" abstract="true" name="GeneralAndAdministrativeExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInUlcerativeColitisExpenses" abstract="false" name="IncreaseDecreaseInUlcerativeColitisExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInCrohnsDiseaseResearchExpenses" abstract="false" name="IncreaseDecreaseInCrohnsDiseaseResearchExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInTransversalActivities" abstract="false" name="IncreaseDecreaseInTransversalActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInTransversalActivitiesCombinationTherapy" abstract="false" name="IncreaseDecreaseInTransversalActivitiesCombinationTherapy" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_IncreaseDecreaseInEmployerTaxAndSocialContributions" abstract="false" name="IncreaseDecreaseInEmployerTaxAndSocialContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_AuditorsRemunerationForAuditRelatedFees" abstract="false" name="AuditorsRemunerationForAuditRelatedFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfEmployeeWorkforceTable" abstract="true" name="DisclosureOfEmployeeWorkforceTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DisclosureOfEmployeeWorkforceLineItems" abstract="true" name="DisclosureOfEmployeeWorkforceLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_InterestExpenseOnRoyaltyCertificates" abstract="false" name="InterestExpenseOnRoyaltyCertificates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_LossesArisingFromDerecognitionOfFinancialLiabilities" abstract="false" name="LossesArisingFromDerecognitionOfFinancialLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TransactionCosts" abstract="false" name="TransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_GainsOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss" abstract="false" name="GainsOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_UnwindingEffectOfDiscountRelatedToAdvancesMadeToCROs" abstract="false" name="UnwindingEffectOfDiscountRelatedToAdvancesMadeToCROs" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_GainsArisingFromDerecognitionOfFinancialLiabilities" abstract="false" name="GainsArisingFromDerecognitionOfFinancialLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_DisclosureOfFinancialGainLossTable" abstract="true" name="DisclosureOfFinancialGainLossTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DisclosureOfFinancialGainLossLineItems" abstract="true" name="DisclosureOfFinancialGainLossLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_ForeignExchangeGainsLossesOnTranslationOfForeignOperations" abstract="false" name="ForeignExchangeGainsLossesOnTranslationOfForeignOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TaxEffectOfShareBasedPayment" abstract="false" name="TaxEffectOfShareBasedPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TaxEffectOfResearchTaxCredit" abstract="false" name="TaxEffectOfResearchTaxCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TaxEffectOfTransactionCostsRelatedToCapitalIncrease" abstract="false" name="TaxEffectOfTransactionCostsRelatedToCapitalIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TaxEffectOfChangesInDerivativeFairValueAndOtherLiabilitiesMeasuredAtFVTPL" abstract="false" name="TaxEffectOfChangesInDerivativeFairValueAndOtherLiabilitiesMeasuredAtFVTPL" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_TaxEffectOfNonRecognitionOfDeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferences" abstract="false" name="TaxEffectOfNonRecognitionOfDeferredTaxAssetsRelatedToTaxLossesAndTemporaryDifferences" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_RetirementBenefitObligationsRelatedTemporaryDifferencesMember" abstract="true" name="RetirementBenefitObligationsRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_SubsidiesRelatedTemporaryDifferencesMember" abstract="true" name="SubsidiesRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_LeasesRelatedTemporaryDifferencesMember" abstract="true" name="LeasesRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_RoyaltyCertificatesRelatedTemporaryDifferencesMember" abstract="true" name="RoyaltyCertificatesRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesRelatedTemporaryDifferencesMember" abstract="true" name="OtherFinancialLiabilitiesRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_ProvisionsForAGATaxesRelatedTemporaryDifferencesMember" abstract="true" name="ProvisionsForAGATaxesRelatedTemporaryDifferencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_UnrecognizedDeferredTaxAssets" abstract="false" name="UnrecognizedDeferredTaxAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NetDeferredTaxAssetsLiabilitiesRecognisedInFinancialPosition" abstract="false" name="NetDeferredTaxAssetsLiabilitiesRecognisedInFinancialPosition" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_AbivaxLLCMember" abstract="true" name="AbivaxLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_MaximumNumberOfSharesToBeIssued" abstract="false" name="MaximumNumberOfSharesToBeIssued" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationFixedCompensation" abstract="false" name="KeyManagementPersonnelCompensationFixedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationVariableCompensation" abstract="false" name="KeyManagementPersonnelCompensationVariableCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationInKindContributions" abstract="false" name="KeyManagementPersonnelCompensationInKindContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationAttendanceFees" abstract="false" name="KeyManagementPersonnelCompensationAttendanceFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_KeyManagementPersonnelCompensationConsultingFees" abstract="false" name="KeyManagementPersonnelCompensationConsultingFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_BoardOfDirectorsAndChiefExecutiveOfficerMember" abstract="true" name="BoardOfDirectorsAndChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_AdvisorToTheChiefExecutiveOfficerMember" abstract="true" name="AdvisorToTheChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfOffBalanceSheetCommitmentsTable" abstract="true" name="DisclosureOfOffBalanceSheetCommitmentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_ResearchAndCollaborationAgreementWithCNRSUniversityOfMontpellierAndInstitutCurieMember" abstract="true" name="ResearchAndCollaborationAgreementWithCNRSUniversityOfMontpellierAndInstitutCurieMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_TheScrippsResearchInstituteUniversityOfChicagoAndBrighamYoungUniversityMember" abstract="true" name="TheScrippsResearchInstituteUniversityOfChicagoAndBrighamYoungUniversityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EbolaConditionalAdvanceBPILanguedocRoussillonMember" abstract="true" name="EbolaConditionalAdvanceBPILanguedocRoussillonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_EbolaConditionalAdvanceBPIFranceMember" abstract="true" name="EbolaConditionalAdvanceBPIFranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="abvx_DisclosureOfOffBalanceSheetCommitmentsLineItems" abstract="true" name="DisclosureOfOffBalanceSheetCommitmentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_NumberOfExclusiveLicenses" abstract="false" name="NumberOfExclusiveLicenses" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_AgreementPeriod" abstract="false" name="AgreementPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_CollaborationAgreementsPotentialDevelopmentMilestonePaymentINDFiling" abstract="false" name="CollaborationAgreementsPotentialDevelopmentMilestonePaymentINDFiling" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CollaborationAgreementsPotentialDevelopmentMilestonePaymentPhase3" abstract="false" name="CollaborationAgreementsPotentialDevelopmentMilestonePaymentPhase3" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_CollaborationAgreementsPotentialDevelopmentMilestonePaymentINDApproval" abstract="false" name="CollaborationAgreementsPotentialDevelopmentMilestonePaymentINDApproval" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfAcademicInstitutions" abstract="false" name="NumberOfAcademicInstitutions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesMaximumDrawdownCapacityIncludingInterest" abstract="false" name="OtherFinancialLiabilitiesMaximumDrawdownCapacityIncludingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesAnnualPercentageOfProceedsFromSaleOfIntellectualPropertyRight" abstract="false" name="OtherFinancialLiabilitiesAnnualPercentageOfProceedsFromSaleOfIntellectualPropertyRight" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesAnnualRevenueFromSaleOfProductsDevelopedPeriod" abstract="false" name="OtherFinancialLiabilitiesAnnualRevenueFromSaleOfProductsDevelopedPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesPercentageOfAnnualRevenueFromSaleOfProductsDevelopedPreTaxRevenueThreshold" abstract="false" name="OtherFinancialLiabilitiesPercentageOfAnnualRevenueFromSaleOfProductsDevelopedPreTaxRevenueThreshold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesPercentageOfAnnualRevenueFromSaleOfProductsDeveloped" abstract="false" name="OtherFinancialLiabilitiesPercentageOfAnnualRevenueFromSaleOfProductsDeveloped" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesPayableAnnualRevenueFromSaleOfProductsDeveloped" abstract="false" name="OtherFinancialLiabilitiesPayableAnnualRevenueFromSaleOfProductsDeveloped" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_OtherFinancialLiabilitiesRepaymentPeriod" abstract="false" name="OtherFinancialLiabilitiesRepaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abvx_DisclosureOfCommitmentsReceivedTable" abstract="true" name="DisclosureOfCommitmentsReceivedTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abvx_DisclosureOfCommitmentsReceivedLineItems" abstract="true" name="DisclosureOfCommitmentsReceivedLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abvx_NumberOfProjectsTerminated" abstract="false" name="NumberOfProjectsTerminated" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_InterestRateCollarRange" abstract="false" name="InterestRateCollarRange" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent" abstract="false" name="SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="abvx_SensitivityAnalysisForTypesOfMarketRisk10AdverseChangeInExchangeRateImpactOnForeignExchangeGainLoss" abstract="false" name="SensitivityAnalysisForTypesOfMarketRisk10AdverseChangeInExchangeRateImpactOnForeignExchangeGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_SensitivityAnalysisForTypesOfMarketRisk10FavorableChangeInExchangeRateImpactOnForeignExchangeGainLoss" abstract="false" name="SensitivityAnalysisForTypesOfMarketRisk10FavorableChangeInExchangeRateImpactOnForeignExchangeGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_NumberOfFinancialInstitutionsToMaintainCash" abstract="false" name="NumberOfFinancialInstitutionsToMaintainCash" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="abvx_BalancesWithBanksInExcessOfLegallyInsuredLimit" abstract="false" name="BalancesWithBanksInExcessOfLegallyInsuredLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abvx_InvestmentsInMutualFundsAndStructuredNotes" abstract="false" name="InvestmentsInMutualFundsAndStructuredNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
