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<!-- Creation Date      : 2018-08-02T09:25:25.0000103+00:00 -->
<!-- Version            : 2.12.6766.32775 -->
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<!-- Copyright (c) 2018 Donnelley Financial, LLC. All Rights Reserved. -->
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  <element id="vtvt_MFTTPHoldingsLLCMember" name="MFTTPHoldingsLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_ScheduleOfEarningsPerShareLineItems" name="ScheduleOfEarningsPerShareLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_ScheduleOfEarningsPerShareTable" name="ScheduleOfEarningsPerShareTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_EmployeeStockOptionsUnderTwoThousandSeventeenLetterAgreementMember" name="EmployeeStockOptionsUnderTwoThousandSeventeenLetterAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" name="FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" name="FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_WarrantLiabilityRelatedPartyMember" name="WarrantLiabilityRelatedPartyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="vtvt_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantLiabilityPurchases" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantLiabilityPurchases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="vtvt_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantLiabilitySales" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantLiabilitySales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="vtvt_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisWarrantLiability" name="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisWarrantLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
</schema>
