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  <xsd:element id="iron_SeriesSeedPreferredStockMember" name="SeriesSeedPreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ChangeInFairValueOfDerivatives" name="ChangeInFairValueOfDerivatives" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfCommonStockInRegisteredDirectOfferingIncludedInAccountsPayableAndAccruedExpenses1" name="DeferredIssuanceCostsOnSaleOfCommonStockInRegisteredDirectOfferingIncludedInAccountsPayableAndAccruedExpenses1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_PreFundedWarrantsInRegisteredDirectOfferingNetOfIssuanceCosts" name="PreFundedWarrantsInRegisteredDirectOfferingNetOfIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_FSDCMember" name="FSDCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_WarrantsPolicyTextBlock" name="WarrantsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_StateOperatingLossCarryForwards" name="StateOperatingLossCarryForwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfCommonStockInFollowOnPublicOfferingIncludedInAccountsPayableAndAccruedExpenses" name="DeferredIssuanceCostsOnSaleOfCommonStockInFollowOnPublicOfferingIncludedInAccountsPayableAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_StockReservedDuringPeriodSharesExerciseOfPrefundedWarrants" name="StockReservedDuringPeriodSharesExerciseOfPrefundedWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_DescriptionOfInitialOwnershipLimit" name="DescriptionOfInitialOwnershipLimit" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_ConvertiblePromissoryNotesTable" name="ConvertiblePromissoryNotesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_OperatingLeaseLiabilities" name="OperatingLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInFollowOnPublicOfferingIncludedInAccountsPayableAndAccruedExpenses" name="DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInFollowOnPublicOfferingIncludedInAccountsPayableAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_PercentageOfCommonStockOutstanding" name="PercentageOfCommonStockOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_TwoThousandAndNineteenLicenseAgreementMember" name="TwoThousandAndNineteenLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_AnnualNonRefundableNonCreditableDevelopmentFeePayment" name="AnnualNonRefundableNonCreditableDevelopmentFeePayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_StockIssuedDuringPeriodValueSaleOfPreFundedWarrantsInRegisteredDirectOffering" name="StockIssuedDuringPeriodValueSaleOfPreFundedWarrantsInRegisteredDirectOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_OptionSharesAvailableToPurchaseForUnderwriter" name="OptionSharesAvailableToPurchaseForUnderwriter" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_EmergingGrowthCompanyStatusPolicyTextBlock" name="EmergingGrowthCompanyStatusPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_LoanPrepaymentChargePercentage" name="LoanPrepaymentChargePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PreferredStockSharesIssued1" name="PreferredStockSharesIssued1" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_CommonStockAuthorizedAndReservedForFutureIssuance" name="CommonStockAuthorizedAndReservedForFutureIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfCommonStockInFollowOnPublicOfferingIncludedInOtherCurrentAssets" name="DeferredIssuanceCostsOnSaleOfCommonStockInFollowOnPublicOfferingIncludedInOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_ContingentAnnualFeeUponCommercializationAmountOfNetSales" name="ContingentAnnualFeeUponCommercializationAmountOfNetSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_FinalEndOfTermChargeAccrued" name="FinalEndOfTermChargeAccrued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_ShareBasedCompensationArrangementsBySharebasedPaymentAwardOptionsAssumedInReverseRecapitalizationInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementsBySharebasedPaymentAwardOptionsAssumedInReverseRecapitalizationInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PaymentOfOneTimeNonRefundableNonCreditableInitialLicenseFee" name="PaymentOfOneTimeNonRefundableNonCreditableInitialLicenseFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_ConditionUponCertainMilestonePaymentsWaivedPercentage" name="ConditionUponCertainMilestonePaymentsWaivedPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_UnvestedStockBasedAwardMember" name="UnvestedStockBasedAwardMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ContingentPayments" name="ContingentPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_InvestorsOrAffiliatesMember" name="InvestorsOrAffiliatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnEquityFinancingIncludedInAccountsPayableAndAccruedExpenses" name="DeferredIssuanceCostsOnEquityFinancingIncludedInAccountsPayableAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_ProRatePortionOfShares" name="ProRatePortionOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PurchaseOfCommonStockForPreFundedWarrantsShares" name="PurchaseOfCommonStockForPreFundedWarrantsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_OperatingLeaseRightOfUseAssets" name="OperatingLeaseRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisChangeInFairValueOfCvrLiability" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisChangeInFairValueOfCvrLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_OfferingExpenses" name="OfferingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_FuturePaymentsUponSalesBasedMilestones" name="FuturePaymentsUponSalesBasedMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_AtTheMarketOfferingMember" name="AtTheMarketOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_LicenseAgreementAndMasterServiceAgreementMember" name="LicenseAgreementAndMasterServiceAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_FuturePaymentsUponTheAchievementOfCertainDevelopment" name="FuturePaymentsUponTheAchievementOfCertainDevelopment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" name="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_DeferredTaxLiabilitiesDepreciation" name="DeferredTaxLiabilitiesDepreciation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisContingentValueRightLiabilityValue" name="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisContingentValueRightLiabilityValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CommonStockExchangeRatio" name="CommonStockExchangeRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_ShortTermBankLoansAndNotespayablePercentage" name="ShortTermBankLoansAndNotespayablePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisChangeInFairValueOfDerivativeLiability" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisChangeInFairValueOfDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_NumberOfTranches" name="NumberOfTranches" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_FollowOnPublicOfferingMember" name="FollowOnPublicOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_NatureOfBusinessLineItems" name="NatureOfBusinessLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CommonStockInFollowOnPublicOfferingNetOfIssuanceCosts" name="CommonStockInFollowOnPublicOfferingNetOfIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_PreFundedWarrantPricePerWarrant" name="PreFundedWarrantPricePerWarrant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_CommitmentsAndContingenciesDetailsTable" name="CommitmentsAndContingenciesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_AccruedSimpleInterest" name="AccruedSimpleInterest" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_MabwellTherapeuticsIncMember" name="MabwellTherapeuticsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_FirstPotentialMilestonePaymentPayable" name="FirstPotentialMilestonePaymentPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_StockIssuedDuringPeriodValueSaleOfCommonStockInAtTheMarketOfferings" name="StockIssuedDuringPeriodValueSaleOfCommonStockInAtTheMarketOfferings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_CvrLiabilityCurrent" name="CvrLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_TwoThousandAndEighteenLicenseAgreementMember" name="TwoThousandAndEighteenLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_TwoThousandAndNineteenSaleAgreementMember" name="TwoThousandAndNineteenSaleAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInRegisteredDirectOfferingIncludedInAccountsPayableAndAccruedExpenses" name="DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInRegisteredDirectOfferingIncludedInAccountsPayableAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DeferredTaxAssetsTaxCredit" name="DeferredTaxAssetsTaxCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_SeriesBConvertiblePreferredStockMember" name="SeriesBConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_UnderwritingDiscounts" name="UnderwritingDiscounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_UnvestedRestrictedStockMember" name="UnvestedRestrictedStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_AdditionalConsiderationUponAchievementOfCertainDevelopmentMilestones" name="AdditionalConsiderationUponAchievementOfCertainDevelopmentMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_SiliconValleyBankMember" name="SiliconValleyBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_Certaindevelopmentandregulatorymilestonepayments" name="Certaindevelopmentandregulatorymilestonepayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_PreferredStockTableTextBlock" name="PreferredStockTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_ScheduleOfFairValueOfTheWarrantsToPurchaseSharesTableTextBlock" name="ScheduleOfFairValueOfTheWarrantsToPurchaseSharesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PercentageOfWorkforce" name="PercentageOfWorkforce" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_MergerConsiderationMember" name="MergerConsiderationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_StockIssuedDuringPeriodValueSaleOfCommonStockInRegisteredDirectOffering" name="StockIssuedDuringPeriodValueSaleOfCommonStockInRegisteredDirectOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_TwoThousandTwentyOneEmployeeStockPurchasePlanMember" name="TwoThousandTwentyOneEmployeeStockPurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_DeferralAgreementMember" name="DeferralAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ConvertiblePromissoryNotesLineItems" name="ConvertiblePromissoryNotesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ReductionToAdditionalPaidInCapitalMember" name="ReductionToAdditionalPaidInCapitalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_PeriodForTerminateServiceAgreement" name="PeriodForTerminateServiceAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_AnnualTaxableIncome" name="AnnualTaxableIncome" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_TrancheTwoMember" name="TrancheTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_OperatingLossCarryforwardsExpirationYear" name="OperatingLossCarryforwardsExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_TrancheOneMember" name="TrancheOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_TwoThousandAndEighteenMasterLicenseAgreementMember" name="TwoThousandAndEighteenMasterLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_PatentCostsPolicyTextBlock" name="PatentCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_ConvertiblePreferredStockTextBlock" name="ConvertiblePreferredStockTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_TermLoanMember" name="TermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_PIPEFinancingMember" name="PIPEFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_PreFundedWarrantBeneficiaryOwnershipLimitationPercentage" name="PreFundedWarrantBeneficiaryOwnershipLimitationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_StockIssuedDuringPeriodValueRestrictedStockAwardVested" name="StockIssuedDuringPeriodValueRestrictedStockAwardVested" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfCommonStockAndPreFundedWarrantsInOfferingsIncludedInAccountsPayableAndAccruedExpenses1" name="DeferredIssuanceCostsOnSaleOfCommonStockAndPreFundedWarrantsInOfferingsIncludedInAccountsPayableAndAccruedExpenses1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_EquityIssuanceCostsAndOtherCosts" name="EquityIssuanceCostsAndOtherCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_StockIssuanceCosts" name="StockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DecreaseInRightOfUseAssetsRelatedToLeaseModifications" name="DecreaseInRightOfUseAssetsRelatedToLeaseModifications" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_PropertyAndEquipmentEstimatedUsefulLivesTableTextBlock" name="PropertyAndEquipmentEstimatedUsefulLivesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_AccruedResearchAndDevelopmentExpense" name="AccruedResearchAndDevelopmentExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInFollowOnPublicOfferingIncludedInOtherCurrentAssets" name="DeferredIssuanceCostsOnSaleOfPreFundedWarrantsInFollowOnPublicOfferingIncludedInOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_NetOfCommissions" name="NetOfCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_MergerAbstract" name="MergerAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CertainCommercialMilestonePaymentsForCertainLicensedAntibodyProductNetSalesAchievements" name="CertainCommercialMilestonePaymentsForCertainLicensedAntibodyProductNetSalesAchievements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_TwoThousandTwentyOneStockOptionAndIncentivePlanMember" name="TwoThousandTwentyOneStockOptionAndIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_NatureOfBusinessTable" name="NatureOfBusinessTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_TransactionCost" name="TransactionCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsAssumedInReverseRecapitalizationInPeriod" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsAssumedInReverseRecapitalizationInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_UnauditedInterimCondensedConsolidatedFinancialInformationPolicyTextBlock" name="UnauditedInterimCondensedConsolidatedFinancialInformationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_DeferredMergerTransactionCosts" name="DeferredMergerTransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_LicenseAgreementMember" name="LicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ReceivableForProceedsFromStockOptionExercisesIncludedInOtherCurrentAssets1" name="ReceivableForProceedsFromStockOptionExercisesIncludedInOtherCurrentAssets1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_FuturePaymentsUponCommercialization" name="FuturePaymentsUponCommercialization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DeferredIssuanceCostsOnSaleOfCommonStockInAtTheMarketOfferingsIncludedInAccountsPayableAndAccruedExpenses" name="DeferredIssuanceCostsOnSaleOfCommonStockInAtTheMarketOfferingsIncludedInAccountsPayableAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisDerivativeLiability" name="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_AnnualMaintenanceFees" name="AnnualMaintenanceFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_SVBLoanAgreementMember" name="SVBLoanAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ProceedsFromSaleOfPreFundedWarrantsInOfferingsNetOfIssuanceCostsPaid" name="ProceedsFromSaleOfPreFundedWarrantsInOfferingsNetOfIssuanceCostsPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_RentAbatementOfLease" name="RentAbatementOfLease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_NetProceedsFromIssuanceOfCommonStock" name="NetProceedsFromIssuanceOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DecreaseInOperatingLeaseLiabilitiesRelatedToLeaseModifications" name="DecreaseInOperatingLeaseLiabilitiesRelatedToLeaseModifications" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_NetProceedsAfterDeductingOfferingExpenses" name="NetProceedsAfterDeductingOfferingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_MeasurementInputDiscountRate" name="MeasurementInputDiscountRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_OldGeminiMember" name="OldGeminiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_AbbvieDeutschlandGmbhCoKgMember" name="AbbvieDeutschlandGmbhCoKgMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_IncomeTaxReconciliationTaxCreditsResearchAndDevelopment" name="IncomeTaxReconciliationTaxCreditsResearchAndDevelopment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_PreferredStockSharesOutstanding1" name="PreferredStockSharesOutstanding1" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_SeriesSeedConvertiblePreferredStockMember" name="SeriesSeedConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_LicenseAndStockPurchaseAgreementMember" name="LicenseAndStockPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CvrFairValueOfCvrLiability" name="CvrFairValueOfCvrLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_FHoffmannLaRocheLtdMember" name="FHoffmannLaRocheLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ContingentAnnualFeeUponCommercializationDescription" name="ContingentAnnualFeeUponCommercializationDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_StockIssuedDuringPeriodSaleOfCommonStockInAtTheMarketOfferingsShares" name="StockIssuedDuringPeriodSaleOfCommonStockInAtTheMarketOfferingsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_FederalOperatingLossCarryForwards" name="FederalOperatingLossCarryForwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_NonRefundableUpfrontFee" name="NonRefundableUpfrontFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_MergerAgreementMember" name="MergerAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_ChangeInFairValueOfContingentValueRightLiability" name="ChangeInFairValueOfContingentValueRightLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_PipeInvestorsMember" name="PipeInvestorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CommonStockInAtTheMarketOfferingsNetOfIssuanceCosts" name="CommonStockInAtTheMarketOfferingsNetOfIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_GeminiMergerMember" name="GeminiMergerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_UnpaidSeveranceCosts" name="UnpaidSeveranceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_RoyaltyPaymentsPercentageOfNetProductSalesIfCommercializationAchieved" name="RoyaltyPaymentsPercentageOfNetProductSalesIfCommercializationAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PaymentForUpfrontLicenseFee" name="PaymentForUpfrontLicenseFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_ProceedsFromSaleOfCommonStockInOfferingsNetOfIssuanceCostsPaid" name="ProceedsFromSaleOfCommonStockInOfferingsNetOfIssuanceCostsPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_DisclosureOfSummaryOfNetProceedsFromBusinessCombinationTableTextBlock" name="DisclosureOfSummaryOfNetProceedsFromBusinessCombinationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_Leaseexpirationyear" name="Leaseexpirationyear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_OneTimeNonRefundableUpfrontPayment" name="OneTimeNonRefundableUpfrontPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_DiscMedicineIncMember" name="DiscMedicineIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_SaleOfPreFundedWarrantNetProceeds" name="SaleOfPreFundedWarrantNetProceeds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_RocheMember" name="RocheMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_SiliconValleyBankWarrantsMember" name="SiliconValleyBankWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_NoncashLeaseExpense" name="NoncashLeaseExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_UpfrontFee" name="UpfrontFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_SummaryOfSignificantAccountingPoliciesPolicyTextBlock" name="SummaryOfSignificantAccountingPoliciesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="iron_PreFundedWarrantsOutstanding" name="PreFundedWarrantsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="iron_AdditionalConsiderationUponAchievementOfCertainSalesMilestones" name="AdditionalConsiderationUponAchievementOfCertainSalesMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_AdditionalConsiderationUponAchievementOfCertainCommercialMilestones" name="AdditionalConsiderationUponAchievementOfCertainCommercialMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_CapitalizedLicenses" name="CapitalizedLicenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_FoundersAndCertainEmployeesMember" name="FoundersAndCertainEmployeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_OneTimeMilestonePayments" name="OneTimeMilestonePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="iron_AurigeneDiscoveriesTechnologyLimitedMember" name="AurigeneDiscoveriesTechnologyLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_UpfrontPayment" name="UpfrontPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="iron_TwoThousandAndSeventeenLicenseAgreementMember" name="TwoThousandAndSeventeenLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_CapitalizedDeferredOfferingCostMember" name="CapitalizedDeferredOfferingCostMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="iron_AdditionalInterestRateOfPastDueAmountOutstanding" name="AdditionalInterestRateOfPastDueAmountOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
