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  <xs:element id="vtvt_SummaryOfSignificantAccountingPoliciesTable" abstract="true" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_CollaborativeArrangementContingentConsiderationTransferredAggregateShareValue" abstract="false" name="CollaborativeArrangementContingentConsiderationTransferredAggregateShareValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_RedeemableNoncontrollingInterestsMember" abstract="true" name="RedeemableNoncontrollingInterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_ExchangeOfRedeemableNonControllingInterestToClassACommonStockMember" abstract="true" name="ExchangeOfRedeemableNonControllingInterestToClassACommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_OperatingLeasesImputedInterest" abstract="false" name="OperatingLeasesImputedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_ClassOfWarrantOrRightPercentOfSecuritiesCalledByWarrantsOrRights" abstract="false" name="ClassOfWarrantOrRightPercentOfSecuritiesCalledByWarrantsOrRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="vtvt_ScheduleOfEarningsPerShareTable" abstract="true" name="ScheduleOfEarningsPerShareTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_CinRxInvestmentMember" abstract="true" name="CinRxInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_MFTTPHoldingsLLCMember" abstract="true" name="MFTTPHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" abstract="true" name="OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_IncomeTaxesTable" abstract="true" name="IncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_VTvLLCMember" abstract="true" name="VTvLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_ScheduleOfEarningsPerShareLineItems" abstract="true" name="ScheduleOfEarningsPerShareLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" abstract="true" name="FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_CollaborativeArrangementRoyaltiesReceivablePeriod" abstract="false" name="CollaborativeArrangementRoyaltiesReceivablePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="vtvt_MacAndrewsAndForbesIncorporatedMember" abstract="true" name="MacAndrewsAndForbesIncorporatedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_CognaMember" abstract="true" name="CognaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_MaximumFundingPercentageOfResearchAndDevelopmentMilestones" abstract="false" name="MaximumFundingPercentageOfResearchAndDevelopmentMilestones" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_DevelopmentalAndRegulatoryMilestonePaymentMember" abstract="true" name="DevelopmentalAndRegulatoryMilestonePaymentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_WarrantyLiability" abstract="false" name="WarrantyLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_SaleOfStockAggregateOfferingPrice" abstract="false" name="SaleOfStockAggregateOfferingPrice" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_RedeemableNonControllingInterestExchangeAgreementStockConversionRatio" abstract="false" name="RedeemableNonControllingInterestExchangeAgreementStockConversionRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="vtvt_NovoLicenseAgreementMember" abstract="true" name="NovoLicenseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_NoncontrollingInterestReclassificationToAdditionalPaidInCapital" abstract="false" name="NoncontrollingInterestReclassificationToAdditionalPaidInCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_PercentageOfNonVotingEconomicInterest" abstract="false" name="PercentageOfNonVotingEconomicInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_SalesBasedMilestonesPaymentMember" abstract="true" name="SalesBasedMilestonesPaymentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_NotesReceivableDiscountRate" abstract="false" name="NotesReceivableDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_SaleOfStockConsiderationReceivableTerm" abstract="false" name="SaleOfStockConsiderationReceivableTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="vtvt_CommonStockParOrStatedValueOfPrivatePlacementShares" abstract="false" name="CommonStockParOrStatedValueOfPrivatePlacementShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="vtvt_OwnershipPercentageOfMajorityOwner" abstract="false" name="OwnershipPercentageOfMajorityOwner" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_CommitmentsAndContingenciesLineItems" abstract="true" name="CommitmentsAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_CommitmentsAndContingenciesTable" abstract="true" name="CommitmentsAndContingenciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_CommonStockParOrStatedValueOfPrivatePlacementPreFundedWarrantsShares" abstract="false" name="CommonStockParOrStatedValueOfPrivatePlacementPreFundedWarrantsShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="vtvt_ProceedsFromSaleOfCommonStock" abstract="false" name="ProceedsFromSaleOfCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_PeriodUsedToDetermineExchangeValueBasedOnWeightedAveragePriceOfClassCommonStock" abstract="false" name="PeriodUsedToDetermineExchangeValueBasedOnWeightedAveragePriceOfClassCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="vtvt_TypeOneDiabetesMember" abstract="true" name="TypeOneDiabetesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" abstract="true" name="FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_TypeTwoDiabetesMember" abstract="true" name="TypeTwoDiabetesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_OtherIndicationMember" abstract="true" name="OtherIndicationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_ChangeInFairValueOfWarrantsRelatedParty" abstract="false" name="ChangeInFairValueOfWarrantsRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_WarrantLiabilityRelatedPartyMember" abstract="true" name="WarrantLiabilityRelatedPartyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_JDRFInternationalMember" abstract="true" name="JDRFInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_IncreaseInCommonStockSharesAuthorized" abstract="false" name="IncreaseInCommonStockSharesAuthorized" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="vtvt_ChangeInRedemptionValueOfNoncontrollingInterest" abstract="false" name="ChangeInRedemptionValueOfNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_CommonStockAndPreferredStockSharesAuthorized" abstract="false" name="CommonStockAndPreferredStockSharesAuthorized" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="vtvt_ShareBasedCompensationArrangementByShareBasedPaymentAwardModifiedCommonStock" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardModifiedCommonStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="vtvt_TDCowenSalesAgreementMember" abstract="true" name="TDCowenSalesAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="vtvt_UnauditedInterimFinancialInformationPolicyPolicyTextBlock" abstract="false" name="UnauditedInterimFinancialInformationPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="vtvt_IncomeTaxesLineItems" abstract="true" name="IncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_PercentageOfNonVotingEconomicInterestByParent" abstract="false" name="PercentageOfNonVotingEconomicInterestByParent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_PotentialMilestonePayment" abstract="false" name="PotentialMilestonePayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_CinRxWarrantsMember" abstract="true" name="CinRxWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_PrivatePlacementPreFundedWarrantsMember" abstract="true" name="PrivatePlacementPreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="vtvt_SaleOfStockConsiderationReceivedOnTransactionGross" abstract="false" name="SaleOfStockConsiderationReceivedOnTransactionGross" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_CollaborativeArrangementNoteReceivableDiscountPaid" abstract="false" name="CollaborativeArrangementNoteReceivableDiscountPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_G42InvestmentsMember" abstract="true" name="G42InvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_EntityPublicFloatThreshold" abstract="false" name="EntityPublicFloatThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_PercentageOfAmountOfCashSavings" abstract="false" name="PercentageOfAmountOfCashSavings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="vtvt_LetterAgreementWarrantsMember" abstract="true" name="LetterAgreementWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="vtvt_SaleOfStockMaximumSecuritiesToBeSoldPercentOfPublicFloat" abstract="false" name="SaleOfStockMaximumSecuritiesToBeSoldPercentOfPublicFloat" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="vtvt_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="vtvt_ShareBasedPaymentArrangementExpenseReductionAmount" abstract="false" name="ShareBasedPaymentArrangementExpenseReductionAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="vtvt_NewsoaraBiopharmaCoLtdMember" abstract="true" name="NewsoaraBiopharmaCoLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
