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<!--Created on: 5/4/2018 2:55:03 PM-->
<!--Modified on: 5/4/2018 2:55:03 PM-->
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  <element id="edit_AccruedIntellectualPropertyFees" name="AccruedIntellectualPropertyFees" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_FairValueAssetsAndLiabilitiesTransfers" name="FairValueAssetsAndLiabilitiesTransfers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_FacilitySubleaseArrangementMember" name="FacilitySubleaseArrangementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CommitmentToReimburseLicensorMember" name="CommitmentToReimburseLicensorMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborationAndLicenseAgreementMember" name="CollaborationAndLicenseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_JunoTherapeuticsMember" name="JunoTherapeuticsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ResearchProgramTerm" name="ResearchProgramTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AgreementExtensionNumber" name="AgreementExtensionNumber" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AgreementExtensionPeriod" name="AgreementExtensionPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialCashPaymentsForResearchAndDevelopmentFunding" name="PotentialCashPaymentsForResearchAndDevelopmentFunding" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfResearchAreas" name="NumberOfResearchAreas" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialFeeReceivableForGeneTargetsUnderDevelopmentAndCommercializationLicense" name="PotentialFeeReceivableForGeneTargetsUnderDevelopmentAndCommercializationLicense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialDevelopmentMilestonePayments" name="PotentialDevelopmentMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialRegulatoryMilestonePayments" name="PotentialRegulatoryMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_LicensePatentRightsMember" name="LicensePatentRightsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_HarvardBroadMitMember" name="HarvardBroadMitMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_UnitedStatesEuropeAndJapanMember" name="UnitedStatesEuropeAndJapanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_UnitedStatesAndOneOtherLocationMember" name="UnitedStatesAndOneOtherLocationMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ProductForTreatmentOfHumanDiseaseMember" name="ProductForTreatmentOfHumanDiseaseMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ProductForTreatmentOfRareDiseaseMember" name="ProductForTreatmentOfRareDiseaseMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborationAgreementPercentageOutstandingSharesIssued" name="CollaborationAgreementPercentageOutstandingSharesIssued" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialLiabilityForClinicalRegulatoryAndCommercialMilestonePayments" name="PotentialLiabilityForClinicalRegulatoryAndCommercialMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_EmployeeMember" name="EmployeeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NonEmployeeMember" name="NonEmployeeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_StockIssuedDuringPeriodSharesStockOptionsExercisedPriorToVesting" name="StockIssuedDuringPeriodSharesStockOptionsExercisedPriorToVesting" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_StockIssuedDuringPeriodSharesStockOptionsExercisedPriorToVestingExercisePrice" name="StockIssuedDuringPeriodSharesStockOptionsExercisedPriorToVestingExercisePrice" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_UnvestedStockHeldByEntity" name="UnvestedStockHeldByEntity" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_EmployeeAndDirectorMember" name="EmployeeAndDirectorMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialLiabilityForProductApprovalClinicalAndRegulatoryMilestonePayments" name="PotentialLiabilityForProductApprovalClinicalAndRegulatoryMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AmountNextMilestonePotentialPayment" name="AmountNextMilestonePotentialPayment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea1" name="AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea1" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea2" name="AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea2" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea3" name="AllocableArrangementConsiderationDevelopmentAndCommercializationLicenseResearchArea3" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationFirstDiscountDeliverableResearchArea1" name="AllocableArrangementConsiderationFirstDiscountDeliverableResearchArea1" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationSecondDiscountDeliverableResearchArea1" name="AllocableArrangementConsiderationSecondDiscountDeliverableResearchArea1" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationThirdDiscountDeliverableResearchArea1" name="AllocableArrangementConsiderationThirdDiscountDeliverableResearchArea1" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationFirstDiscountDeliverableResearchArea2" name="AllocableArrangementConsiderationFirstDiscountDeliverableResearchArea2" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationSecondDiscountDeliverableResearchArea2" name="AllocableArrangementConsiderationSecondDiscountDeliverableResearchArea2" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationThirdDiscountDeliverableResearchArea2" name="AllocableArrangementConsiderationThirdDiscountDeliverableResearchArea2" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationJrcDeliverable" name="AllocableArrangementConsiderationJrcDeliverable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialCommercialMilestonePayments" name="PotentialCommercialMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AreaOfLeasedSpace" name="AreaOfLeasedSpace" nillable="true" type="num:areaItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_LicenseAgreementMilestonePaymentReceived" name="LicenseAgreementMilestonePaymentReceived" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_LicenseAgreementPercentageThresholdForPotentialMilestonePayments" name="LicenseAgreementPercentageThresholdForPotentialMilestonePayments" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_LicenseAgreementContractTerminationTerm" name="LicenseAgreementContractTerminationTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RentAndFacilityRelatedFeesMember" name="RentAndFacilityRelatedFeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CompanySaleSuccessPaymentsUnderPatentRights" name="CompanySaleSuccessPaymentsUnderPatentRights" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfLicensedProducts" name="NumberOfLicensedProducts" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_BroadAndWageningenUniversityMember" name="BroadAndWageningenUniversityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_Cpf1LicenseAgreementMember" name="Cpf1LicenseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PaymentsForUpfrontFeesToCollaborators" name="PaymentsForUpfrontFeesToCollaborators" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PercentageOfRoyaltiesPaidCreditedTowardsRoyaltiesDue" name="PercentageOfRoyaltiesPaidCreditedTowardsRoyaltiesDue" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_Cpf1SuccessPaymentsMember" name="Cpf1SuccessPaymentsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_Cpf1MarketCapSuccessPaymentsMember" name="Cpf1MarketCapSuccessPaymentsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_MarketCapitalizationThreshold" name="MarketCapitalizationThreshold" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NotesPayablePaymentTerms" name="NotesPayablePaymentTerms" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_Cas9IILicenseAgreementMember" name="Cas9IILicenseAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_StrategicAllianceMember" name="StrategicAllianceMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_MarketCapitalization" name="MarketCapitalization" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllerganMember" name="AllerganMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfCollaborationDevelopmentPrograms" name="NumberOfCollaborationDevelopmentPrograms" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ThresholdNumberOfDaysInWhichPaymentToBeMadeOnAcceptanceOfApplication" name="ThresholdNumberOfDaysInWhichPaymentToBeMadeOnAcceptanceOfApplication" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_HurleyStreetLeaseMember" name="HurleyStreetLeaseMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborationDevelopmentProgramOptionExerciseFeeUnderStrategicAllianceAndOptionAgreement" name="CollaborationDevelopmentProgramOptionExerciseFeeUnderStrategicAllianceAndOptionAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborationDevelopmentProgramInitialOptionPeriodExtensionFeeUnderStrategicAllianceAndOptionAgreement" name="CollaborationDevelopmentProgramInitialOptionPeriodExtensionFeeUnderStrategicAllianceAndOptionAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborationDevelopmentProgramOptionExerciseFeeForDevelopmentAndCommercializationUnderStrategicAllianceAndOptionAgreement" name="CollaborationDevelopmentProgramOptionExerciseFeeForDevelopmentAndCommercializationUnderStrategicAllianceAndOptionAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialRegulatoryAndCommercialMilestonePayments" name="PotentialRegulatoryAndCommercialMilestonePayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfAvailableForSaleSecuritiesHeldInContinuousUnrealizedLossPositionLessThanTwelveMonths" name="NumberOfAvailableForSaleSecuritiesHeldInContinuousUnrealizedLossPositionLessThanTwelveMonths" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfAvailableForSaleSecuritiesHeldInContinuousUnrealizedLossPositionTwelveMonthsOrLonger" name="NumberOfAvailableForSaleSecuritiesHeldInContinuousUnrealizedLossPositionTwelveMonthsOrLonger" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_LicenseAgreements2016Member" name="LicenseAgreements2016Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_CollaborativeArrangementsAbstract" name="CollaborativeArrangementsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfCommitteeMembers" name="NumberOfCommitteeMembers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_NumberOfAdditionalDevelopmentAndCommercializationLicenseToBePurchased" name="NumberOfAdditionalDevelopmentAndCommercializationLicenseToBePurchased" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_OneTimePaymentToAcquireLicense" name="OneTimePaymentToAcquireLicense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_AllocableArrangementConsiderationResearchAndDevelopmentServicesUnitOfAccounting" name="AllocableArrangementConsiderationResearchAndDevelopmentServicesUnitOfAccounting" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_GeneralHospitalCorporationMember" name="GeneralHospitalCorporationMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PotentialLiabilityForSalesMilestones" name="PotentialLiabilityForSalesMilestones" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_BroadInstituteIncMember" name="BroadInstituteIncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_WageningenUniversityMember" name="WageningenUniversityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_SuccessPaymentNotesMember" name="SuccessPaymentNotesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ProcessAndPlatformDevelopmentCostsCurrent" name="ProcessAndPlatformDevelopmentCostsCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_SuccessPaymentExpensesCurrent" name="SuccessPaymentExpensesCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_FollowOnOfferingMember" name="FollowOnOfferingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_PublicOfferingMember" name="PublicOfferingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_DeferredRevenueAdjustmentFromEffectOfNewAccountingPrinciple" name="DeferredRevenueAdjustmentFromEffectOfNewAccountingPrinciple" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_IncreaseDecreaseInContractWithCustomerLiability" name="IncreaseDecreaseInContractWithCustomerLiability" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RevenueFromContractWithCustomerPolicyTextBlock" name="RevenueFromContractWithCustomerPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" name="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_DebtSecuritiesAvailableForSaleRealizedGainLoss" name="DebtSecuritiesAvailableForSaleRealizedGainLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RevenueFromContractWithCustomerTransactionPrice" name="RevenueFromContractWithCustomerTransactionPrice" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RevenueFromContractWithCustomersTransactionPriceNonRefundableResearchAndDevelopmentPaymentReceived" name="RevenueFromContractWithCustomersTransactionPriceNonRefundableResearchAndDevelopmentPaymentReceived" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RevenueFromContractWithCustomerTransactionPriceMilestonePaymentReceived" name="RevenueFromContractWithCustomerTransactionPriceMilestonePaymentReceived" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_RevenueFromContractWithCustomersMilestonePaymentsReceived" name="RevenueFromContractWithCustomersMilestonePaymentsReceived" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ScheduleOfChangeInContractWithCustomerAssetAndLiabilityTableTextBlock" name="ScheduleOfChangeInContractWithCustomerAssetAndLiabilityTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="edit_ContractWithCustomerLiabilityAdditions" name="ContractWithCustomerLiabilityAdditions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>




