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  <xsd:element id="gmab_BasisOfPresentationAbstract" name="BasisOfPresentationAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_TypesOfRevenuesAxis" name="TypesOfRevenuesAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_TypesOfRevenuesMember" name="TypesOfRevenuesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_RoyaltiesRevenueMember" name="RoyaltiesRevenueMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_MilestonePaymentsRevenueMember" name="MilestonePaymentsRevenueMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_ReimbursementIncomeMember" name="ReimbursementIncomeMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis" name="IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain" name="IfrsCollaborativeArrangementAndArrangementOtherThanCollaborativeDomain" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_AgreementsWithJanssenMember" name="AgreementsWithJanssenMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfBalanceSheetInformationRelatingToLeasesTableTextBlock" name="DisclosureOfBalanceSheetInformationRelatingToLeasesTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfComprehensiveInformationRelatingToLeasesTableTextBlock" name="DisclosureOfComprehensiveInformationRelatingToLeasesTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_PropertiesMember" name="PropertiesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfFinanceIncomeExpensesAbstract" name="DisclosureOfFinanceIncomeExpensesAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfFinanceIncomeExpensesTableTextBlock" name="DisclosureOfFinanceIncomeExpensesTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_FinanceIncomeAbstract" name="FinanceIncomeAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_InterestAndOtherFinancialIncome" name="InterestAndOtherFinancialIncome" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="gmab_FinanceExpensesAbstract" name="FinanceExpensesAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_InterestAndOtherFinancialExpenses" name="InterestAndOtherFinancialExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="gmab_LossesOnMarketableSecurities" name="LossesOnMarketableSecurities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="gmab_IfrsRestrictedStockUnitsRSUsMember" name="IfrsRestrictedStockUnitsRSUsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfWarrantsGrantedDuringPeriod" name="NumberOfWarrantsGrantedDuringPeriod" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfWarrantsExercisedDuringPeriod" name="NumberOfWarrantsExercisedDuringPeriod" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_MarketableSecuritiesMember" name="MarketableSecuritiesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_TripleaRatingMember" name="TripleaRatingMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_PercentageOfMarketableSecurities" name="PercentageOfMarketableSecurities" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gmab_DisclosureOfWarrantsActivityTableTextBlock" name="DisclosureOfWarrantsActivityTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_ShareBasedArrangementNumberOfAuthorization" name="ShareBasedArrangementNumberOfAuthorization" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfSharesAuthorizedToBeRepurchased" name="NumberOfSharesAuthorizedToBeRepurchased" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gmab_SharesRepurchasedNominalValue" name="SharesRepurchasedNominalValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="gmab_ShareRepurchasedDuringPeriodShares" name="ShareRepurchasedDuringPeriodShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_SharesAvailableForRepurchase" name="SharesAvailableForRepurchase" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_TreasurySharesAcquired" name="TreasurySharesAcquired" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_PercentageOfShareCapitalRepurchased" name="PercentageOfShareCapitalRepurchased" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gmab_Weightedaveragefairvalueofotherequityinstrumentsgrantedinsharebasedpaymentarrangement" name="Weightedaveragefairvalueofotherequityinstrumentsgrantedinsharebasedpaymentarrangement" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_WeightedAverageExercisePriceOfWarrantsGranted" name="WeightedAverageExercisePriceOfWarrantsGranted" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_WeightedAverageExercisePriceOfWarrantsExercised" name="WeightedAverageExercisePriceOfWarrantsExercised" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_PercentageOfShareCapitalAttributedToExerciseOfWarrants" name="PercentageOfShareCapitalAttributedToExerciseOfWarrants" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_WeightedAverageExercisePriceOfFairValueOfWarrants" name="WeightedAverageExercisePriceOfFairValueOfWarrants" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsSubsidiarySaleOfStockAxis" name="IfrsSubsidiarySaleOfStockAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsSaleOfStockNameOfTransactionDomain" name="IfrsSaleOfStockNameOfTransactionDomain" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsSaleOfStockAxis" name="IfrsSaleOfStockAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_IfrsSaleOfStockDomain" name="IfrsSaleOfStockDomain" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_AgreementsWithBointechMember" name="AgreementsWithBointechMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfTreasurySharesOutstanding" name="NumberOfTreasurySharesOutstanding" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gmab_AgreementsWithAbbvieMember" name="AgreementsWithAbbvieMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_AgreementsWithRocheMember" name="AgreementsWithRocheMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfFairValueMeasurementOfAssetsLevel3ReconciliationTableTextBlock" name="DisclosureOfFairValueMeasurementOfAssetsLevel3ReconciliationTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_GainOnOtherInvestments" name="GainOnOtherInvestments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="gmab_LossesOnOtherInvestmentsNet" name="LossesOnOtherInvestmentsNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="gmab_NumberOfIndependentBoardMembers" name="NumberOfIndependentBoardMembers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfNonIndependentBoardMembers" name="NumberOfNonIndependentBoardMembers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_NumberOfEmployeeElectedBoardMembers" name="NumberOfEmployeeElectedBoardMembers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_OtherInvestmentMember" name="OtherInvestmentMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_CollaborationRevenueMember" name="CollaborationRevenueMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gmab_DisclosureOfMarketableSecuritiesByCurrencyTableTextBlock" name="DisclosureOfMarketableSecuritiesByCurrencyTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gmab_GainsOnMarketableSecurities" name="GainsOnMarketableSecurities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element name="IfrsRoyaltiesByProductAxis" id="gmab_IfrsRoyaltiesByProductAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IfrsRoyaltiesByProductDomain" id="gmab_IfrsRoyaltiesByProductDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DarzalexMember" id="gmab_DarzalexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TepezzaMember" id="gmab_TepezzaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="KesimptaMember" id="gmab_KesimptaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherRoyaltyProductMember" id="gmab_OtherRoyaltyProductMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfShareRepurchasesTableTextBlock" id="gmab_ScheduleOfShareRepurchasesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DeirdreP.ConnellyChairPernilleErenbjergDeputyChairRolfHoffmannDr.PaoloPaolettiAndDr.AndersGerselPedersenMember" id="gmab_DeirdreP.ConnellyChairPernilleErenbjergDeputyChairRolfHoffmannDr.PaoloPaolettiAndDr.AndersGerselPedersenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MijkeZachariasseMartinSchultzAndTakahiroHamataniMember" id="gmab_MijkeZachariasseMartinSchultzAndTakahiroHamataniMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ReElectionToBoardOfDirectorsTerm" id="gmab_ReElectionToBoardOfDirectorsTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ElectionToBoardOfDirectorsTerm" id="gmab_ElectionToBoardOfDirectorsTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="IncreaseInInterestIncome" id="gmab_IncreaseInInterestIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ScheduleOfForeignExchangeRatesForPeriodTableTextBlock" id="gmab_ScheduleOfForeignExchangeRatesForPeriodTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PercentageOfIncreaseDecreaseInForeignExchangeRate" id="gmab_PercentageOfIncreaseDecreaseInForeignExchangeRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NetProductSalesMember" id="gmab_NetProductSalesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NovartisMember" id="gmab_NovartisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ForeignExchangeRateGainsAndLossesDetail" id="gmab_ForeignExchangeRateGainsAndLossesDetail" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RevenueForPeriod." id="gmab_RevenueForPeriod." type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RevenueForPeriod" id="gmab_RevenueForPeriod" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PfizerMember" id="gmab_PfizerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IfrsGeographicalAxis" id="gmab_IfrsGeographicalAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IfrsGeographicalDomain" id="gmab_IfrsGeographicalDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StockRepurchaseAuthorization2024Member" id="gmab_StockRepurchaseAuthorization2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IfrsIncreaseDecreaseInOperatingCapitalAbstract" id="gmab_IfrsIncreaseDecreaseInOperatingCapitalAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentsForPostCombinationEquityAwards" id="gmab_PaymentsForPostCombinationEquityAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ProfoundbioMember" id="gmab_ProfoundbioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessCombinationNumberOfCandidatesInClinicalDevelopmentRightsReceived" id="gmab_BusinessCombinationNumberOfCandidatesInClinicalDevelopmentRightsReceived" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CashTransferredForOutstandingShares" id="gmab_CashTransferredForOutstandingShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CashTransferredForOutstandingEquityAwardsForSettlementOfVestedAndNonVestedAwards" id="gmab_CashTransferredForOutstandingEquityAwardsForSettlementOfVestedAndNonVestedAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CashTransferredForOutstandingEquityAwardsForSettlementOfVestedAwards" id="gmab_CashTransferredForOutstandingEquityAwardsForSettlementOfVestedAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CashTransferredForOutstandingEquityAwardsForSettlementOfNonVestedAwards" id="gmab_CashTransferredForOutstandingEquityAwardsForSettlementOfNonVestedAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="IfrsInProcessResearchAndDevelopmentMember" id="gmab_IfrsInProcessResearchAndDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherCurrentAssetsRecognisedAsOfAcquisitionDate" id="gmab_OtherCurrentAssetsRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" id="gmab_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OtherCurrentLiabilitiesRecognisedAsOfAcquisitionDate" id="gmab_OtherCurrentLiabilitiesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ResearchAndDevelopmentExpensesOfAcquiree" id="gmab_ResearchAndDevelopmentExpensesOfAcquiree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SellingGeneralAndAdministrativeExpensesOfAcquiree" id="gmab_SellingGeneralAndAdministrativeExpensesOfAcquiree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AcquisitionAndIntegrationRelatedChargesOfAcquiree" id="gmab_AcquisitionAndIntegrationRelatedChargesOfAcquiree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ExpensesOfAcquiree" id="gmab_ExpensesOfAcquiree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LicensesAndPatentsMember" id="gmab_LicensesAndPatentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfPatentsOnWhichCaseFiled" id="gmab_NumberOfPatentsOnWhichCaseFiled" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="NonAmortizedIntangibleAssetsMember" id="gmab_NonAmortizedIntangibleAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AmortizedIntangibleAssetsMember" id="gmab_AmortizedIntangibleAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RevenueFromPartner" id="gmab_RevenueFromPartner" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="NumberOfShareBuyBackPrograms" id="gmab_NumberOfShareBuyBackPrograms" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
</xsd:schema>
