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  <xs:element id="tars_StockIssuedDuringPeriodValueLapseOfRepurchaseRights" abstract="false" name="StockIssuedDuringPeriodValueLapseOfRepurchaseRights" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_OtherFacilityLeasesMember" abstract="true" name="OtherFacilityLeasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tars_LesseeOperatingLeaseNumberOfContractsNotImpaired" abstract="false" name="LesseeOperatingLeaseNumberOfContractsNotImpaired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tars_CollaborativeArrangementMilestonePayment" abstract="false" name="CollaborativeArrangementMilestonePayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_LesseeOperatingLeaseNumberOfLeaseContracts" abstract="false" name="LesseeOperatingLeaseNumberOfLeaseContracts" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tars_StockIssuedDuringPeriodSharesLapseOfRepurchaseRights" abstract="false" name="StockIssuedDuringPeriodSharesLapseOfRepurchaseRights" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tars_EquityIncentivePlan2016Member" abstract="true" name="EquityIncentivePlan2016Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumExercisePricePercentOfFairMarketValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumExercisePricePercentOfFairMarketValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tars_AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversaryValueIssuedForServices" abstract="false" name="AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversaryValueIssuedForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_NumberOfEmploymentArrangementsWithExecutiveOfficers" abstract="false" name="NumberOfEmploymentArrangementsWithExecutiveOfficers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDisability" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDisability" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="tars_UpfrontPayment" abstract="false" name="UpfrontPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_LianBioMember" abstract="true" name="LianBioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tars_EquityWarrantRights" abstract="false" name="EquityWarrantRights" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_DecapitalizationOfOperatingLeaseRightOfUseAssetLeaseTermination" abstract="false" name="DecapitalizationOfOperatingLeaseRightOfUseAssetLeaseTermination" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_CommonStockCapitalSharesReservedForFutureIssuanceEffectOfRestrictedStockUnitsAvailableForFutureGrant" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceEffectOfRestrictedStockUnitsAvailableForFutureGrant" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tars_ShareBasedPaymentArrangementEarlyExercisedOptionMember" abstract="true" name="ShareBasedPaymentArrangementEarlyExercisedOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tars_AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharesIssuedForServices" abstract="false" name="AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharesIssuedForServices" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tars_LicenseAndCollaborationMember" abstract="true" name="LicenseAndCollaborationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tars_CommonStockCapitalSharesReservedForFutureIssuanceAnnualPercentageIncrease" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceAnnualPercentageIncrease" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tars_CommonStockCapitalSharesReservedForFutureIssuanceEffectOfStockOptionsIssuedAndOutstanding" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceEffectOfStockOptionsIssuedAndOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tars_AccruedClinicalStudiesCurrent" abstract="false" name="AccruedClinicalStudiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
