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  <element id="knsa_CommonClassAorClassBMember" name="CommonClassAorClassBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CommonStockConvertibleToClassCommonShareConversionRatio" name="CommonStockConvertibleToClassCommonShareConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CommonStockConvertibleToClassB1CommonShareConversionRatio" name="CommonStockConvertibleToClassB1CommonShareConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CommonStockConvertibleToClassBCommonShareConversionRatio" name="CommonStockConvertibleToClassBCommonShareConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_MinimumPercentageOfExercisePricePersonsPossessingLessThanTenPercentOfVotingPower" name="MinimumPercentageOfExercisePricePersonsPossessingLessThanTenPercentOfVotingPower" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_MinimumPercentageOfExercisePricePersonsPossessingMoreThanTenPercentOfVotingPower" name="MinimumPercentageOfExercisePricePersonsPossessingMoreThanTenPercentOfVotingPower" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationFutureMaximumPayments" name="ContractualObligationFutureMaximumPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationUponSpecifiedAnnualNetSalesMilestoneAchievement" name="ContractualObligationUponSpecifiedAnnualNetSalesMilestoneAchievement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationUponSpecifiedClinicalAndRegulatoryMilestoneAchievement" name="ContractualObligationUponSpecifiedClinicalAndRegulatoryMilestoneAchievement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_UpfrontPayment" name="UpfrontPayment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationCompletionOfSpecificMilestones" name="ContractualObligationCompletionOfSpecificMilestones" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_AggregateExtensionPaymentsAllowed" name="AggregateExtensionPaymentsAllowed" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationRegulatoryMilestoneFutureMaximumPayments" name="ContractualObligationRegulatoryMilestoneFutureMaximumPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationMilestonePaymentAdditionalSalesThreshold" name="ContractualObligationMilestonePaymentAdditionalSalesThreshold" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationSalesMilestoneFutureMaximumPayments" name="ContractualObligationSalesMilestoneFutureMaximumPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationSalesMilestoneMaximumFutureAdditionalPayments" name="ContractualObligationSalesMilestoneMaximumFutureAdditionalPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationClinicalAndRegulatoryMilestoneFuturePayments" name="ContractualObligationClinicalAndRegulatoryMilestoneFuturePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ContractualObligationMilestonePaymentSalesExcluded" name="ContractualObligationMilestonePaymentSalesExcluded" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstThreePercent" name="DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstThreePercent" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DefinedContributionPlanEmployerMatchingOneHundredPercentContributionPercentOfEmployeesGrossPay" name="DefinedContributionPlanEmployerMatchingOneHundredPercentContributionPercentOfEmployeesGrossPay" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchNextTwoPercent" name="DefinedContributionPlanEmployerMatchingContributionPercentOfMatchNextTwoPercent" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DefinedContributionPlanEmployerMatchingFiftyPercentContributionPercentOfEmployeesGrossPay" name="DefinedContributionPlanEmployerMatchingFiftyPercentContributionPercentOfEmployeesGrossPay" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ConcentrationRiskNumberOfFinancialInstitutions" name="ConcentrationRiskNumberOfFinancialInstitutions" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" name="TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ResearchAndDevelopmentExpenseRelatedToPurchaseOfDrugMaterials" name="ResearchAndDevelopmentExpenseRelatedToPurchaseOfDrugMaterials" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_WellesleyHillsOfficeMember" name="WellesleyHillsOfficeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_LexingtonOfficeMember" name="LexingtonOfficeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PaymentOfPassThroughAmountUponAchievementOfSpecifiedClinicalMilestoneEvent" name="PaymentOfPassThroughAmountUponAchievementOfSpecifiedClinicalMilestoneEvent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesTerminated" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesTerminated" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_LiquidityAbstract" name="LiquidityAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_MonthlyBaseRent" name="MonthlyBaseRent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_MilestonePaymentsDue" name="MilestonePaymentsDue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PaymentForExtensionOfOptionPeriod" name="PaymentForExtensionOfOptionPeriod" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DeferredTaxAssetsTaxDeferredExpenseDepreciationAndAmortization" name="DeferredTaxAssetsTaxDeferredExpenseDepreciationAndAmortization" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CurrentForeignFederalTaxExpenseBenefit" name="CurrentForeignFederalTaxExpenseBenefit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CurrentForeignStateAndLocalTaxExpenseBenefit" name="CurrentForeignStateAndLocalTaxExpenseBenefit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DeferredForeignFederalIncomeTaxExpenseBenefit" name="DeferredForeignFederalIncomeTaxExpenseBenefit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_DeferredForeignStateAndLocalIncomeTaxExpenseBenefit" name="DeferredForeignStateAndLocalIncomeTaxExpenseBenefit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NumberOfIncomeTaxExaminationsPending" name="NumberOfIncomeTaxExaminationsPending" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PeriodAfterWhichAgreementCanBeTerminated" name="PeriodAfterWhichAgreementCanBeTerminated" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_LabEquipmentMember" name="LabEquipmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_FollowOnPublicOfferingMember" name="FollowOnPublicOfferingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_FollowOnPublicOfferingAndPrivatePlacementMember" name="FollowOnPublicOfferingAndPrivatePlacementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_CommonClassAndClassA1Member" name="CommonClassAndClassA1Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_SanDiegoOfficeMember" name="SanDiegoOfficeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TemporaryEquitySharesConvertibleToClassCommonShareConversionRatio" name="TemporaryEquitySharesConvertibleToClassCommonShareConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TemporaryEquitySharesConvertibleToClassBCommonShareConversionRatio" name="TemporaryEquitySharesConvertibleToClassBCommonShareConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardAutomaticIncreaseInSharesAvailableForIssuePercent" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAutomaticIncreaseInSharesAvailableForIssuePercent" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardAutomaticIncreaseInSharesAvailableForIssueShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAutomaticIncreaseInSharesAvailableForIssueShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_FurnitureFixturesAndVehiclesMember" name="FurnitureFixturesAndVehiclesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_IssuanceOfStockForAcquisition" name="IssuanceOfStockForAcquisition" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_IncreaseDecreaseInOperatingLeaseLiabilities" name="IncreaseDecreaseInOperatingLeaseLiabilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_LesseeOperatingLeaseRemainingLeaseTerm" name="LesseeOperatingLeaseRemainingLeaseTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PaymentOfAccruedMilestones" name="PaymentOfAccruedMilestones" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ProceedsFromIssuanceOfCommonStockNetOfUnderwritingDiscountsCommissionsAndOtherOfferingCosts" name="ProceedsFromIssuanceOfCommonStockNetOfUnderwritingDiscountsCommissionsAndOtherOfferingCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_StockIssuedDuringPeriodValueMilestonePayments" name="StockIssuedDuringPeriodValueMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_StockIssuedDuringPeriodSharesMilestonePayments" name="StockIssuedDuringPeriodSharesMilestonePayments" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PrimatopeAcquisitionMember" name="PrimatopeAcquisitionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_MedimmuneLimitedMember" name="MedimmuneLimitedMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_LicenseAgreementMember" name="LicenseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ClinicalSupplyAgreementMember" name="ClinicalSupplyAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_RegeneronPharmaceuticalsIncMember" name="RegeneronPharmaceuticalsIncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_BethIsraelDeaconessMedicalCenterIncMember" name="BethIsraelDeaconessMedicalCenterIncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NovoNordiskMember" name="NovoNordiskMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_StockOptionPurchaseAgreementMember" name="StockOptionPurchaseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PrimatopeTherapeuticsMember" name="PrimatopeTherapeuticsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_AssetPurchaseAgreementMember" name="AssetPurchaseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_BiogenMaMember" name="BiogenMaMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TemporaryEquityConversionOfStockAmountConverted" name="TemporaryEquityConversionOfStockAmountConverted" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TemporaryEquityConversionOfStockSharesConverted" name="TemporaryEquityConversionOfStockSharesConverted" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NoncashLeaseExpense" name="NoncashLeaseExpense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_KiniksaUkMember" name="KiniksaUkMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NumberOfSubsidiaries" name="NumberOfSubsidiaries" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_UnitedKingdomGermanyAndFranceMember" name="UnitedKingdomGermanyAndFranceMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_UnitedStatesUnitedKingdomGermanyAndFranceMember" name="UnitedStatesUnitedKingdomGermanyAndFranceMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" name="EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ValuationAllowanceDeferredTaxAssetChangeInAmountBalanceSheet" name="ValuationAllowanceDeferredTaxAssetChangeInAmountBalanceSheet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ValuationAllowanceDeferredTaxAssetChangeInAmountIncomeTaxProvision" name="ValuationAllowanceDeferredTaxAssetChangeInAmountIncomeTaxProvision" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ClinicalCollaborationAgreementMember" name="ClinicalCollaborationAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_KitePharmaMember" name="KitePharmaMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_TermOfAgreement" name="TermOfAgreement" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_RestrictedStockUnitsRsuTimeBasedMember" name="RestrictedStockUnitsRsuTimeBasedMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCommonSharesToBeReceivedUponVesting" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCommonSharesToBeReceivedUponVesting" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsToVestIfPerformanceGoalsNotAchieved" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsToVestIfPerformanceGoalsNotAchieved" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfVestingInstallments" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfVestingInstallments" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_VotingPowerThresholdPercentageToDetermineExercisePriceOfOptions" name="VotingPowerThresholdPercentageToDetermineExercisePriceOfOptions" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_RilonaceptLongTermIncentivePlanMember" name="RilonaceptLongTermIncentivePlanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_RestrictedStockUnitsRsuPerformanceBasedAwardOneMember" name="RestrictedStockUnitsRsuPerformanceBasedAwardOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_RestrictedStockUnitsRsuPerformanceBasedAwardTwoMember" name="RestrictedStockUnitsRsuPerformanceBasedAwardTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NumberOfGrantsParticipantsMayReceiveRsuAwards" name="NumberOfGrantsParticipantsMayReceiveRsuAwards" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PercentageOfAnnualBonusTargetRsuGrantAwards" name="PercentageOfAnnualBonusTargetRsuGrantAwards" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheOneLevelOneMember" name="ShareBasedPaymentArrangementTrancheOneLevelOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheOneLevelTwoMember" name="ShareBasedPaymentArrangementTrancheOneLevelTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheOneLevelThreeMember" name="ShareBasedPaymentArrangementTrancheOneLevelThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheOneLevelFourMember" name="ShareBasedPaymentArrangementTrancheOneLevelFourMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheTwoLevelOneMember" name="ShareBasedPaymentArrangementTrancheTwoLevelOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheTwoLevelTwoMember" name="ShareBasedPaymentArrangementTrancheTwoLevelTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_ShareBasedPaymentArrangementTrancheTwoLevelThreeMember" name="ShareBasedPaymentArrangementTrancheTwoLevelThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PotentialPerformanceEarnoutPercentage" name="PotentialPerformanceEarnoutPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_FirstAndSecondRsuAwardsMember" name="FirstAndSecondRsuAwardsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_NumberOfAwardsThatWillBeEarnedOrVestIfMilestoneDateDoesNotOccurBySpecifiedDate" name="NumberOfAwardsThatWillBeEarnedOrVestIfMilestoneDateDoesNotOccurBySpecifiedDate" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_EstimatedCashAward" name="EstimatedCashAward" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent" name="EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="knsa_PercentageOfAnnualBonusTargetCashAward" name="PercentageOfAnnualBonusTargetCashAward" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
