<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2022-08-06T18:05:19.3916215+00:00 -->
<!-- Version            : 5.0.1.747 -->
<!-- Package ID         : 3bff2d5b37c540148dff64dfa09271c5 -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema xmlns:dei="http://xbrl.sec.gov/dei/2021q4" xmlns:us-types="http://fasb.org/us-types/2021-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2021" xmlns:srt-types="http://fasb.org/srt-types/2021-01-31" xmlns:dtil="http://precisionbiosciences.com/20220630" xmlns:exch="http://xbrl.sec.gov/exch/2021" xmlns:sic="http://xbrl.sec.gov/sic/2021" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt="http://fasb.org/srt/2021-01-31" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-gaap="http://fasb.org/us-gaap/2021-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2021" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2021" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2021" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://precisionbiosciences.com/20220630" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:import schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" namespace="http://xbrl.org/2020/extensible-enumerations-2.0" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2021/country-2021.xsd" namespace="http://xbrl.sec.gov/country/2021" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2021/currency-2021.xsd" namespace="http://xbrl.sec.gov/currency/2021" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd" namespace="http://xbrl.sec.gov/dei/2021q4" />
  <xsd:import schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" namespace="http://www.xbrl.org/dtr/type/2020-01-21" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2021/exch-2021.xsd" namespace="http://xbrl.sec.gov/exch/2021" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2021/naics-2021.xsd" namespace="http://xbrl.sec.gov/naics/2021" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2021/sic-2021.xsd" namespace="http://xbrl.sec.gov/sic/2021" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd" namespace="http://fasb.org/srt/2021-01-31" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2021/elts/srt-roles-2021-01-31.xsd" namespace="http://fasb.org/srt-roles/2021-01-31" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2021/elts/srt-types-2021-01-31.xsd" namespace="http://fasb.org/srt-types/2021-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd" namespace="http://xbrl.sec.gov/stpr/2021" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd" namespace="http://fasb.org/us-gaap/2021-01-31" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd" namespace="http://fasb.org/us-roles/2021-01-31" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2021/elts/us-types-2021-01-31.xsd" namespace="http://fasb.org/us-types/2021-01-31" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType id="TemplateLink" roleURI="http://precisionbiosciences.com/20220630/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dtil-20220630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dtil-20220630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dtil-20220630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dtil-20220630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/StatementCONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited" id="Role_StatementCONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited">
        <link:definition>100010 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/StatementCONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical" id="Role_StatementCONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical">
        <link:definition>100020 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUnaudited" id="Role_StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUnaudited">
        <link:definition>100030 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUnaudited" id="Role_StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUnaudited">
        <link:definition>100040 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS&apos; EQUITY (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" id="Role_StatementCONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited">
        <link:definition>100050 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPolicies" id="Role_DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPolicies">
        <link:definition>100060 - Disclosure - Description of Business and Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureStockholdersEquity" id="Role_DisclosureStockholdersEquity">
        <link:definition>100070 - Disclosure - Stockholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensation" id="Role_DisclosureShareBasedCompensation">
        <link:definition>100080 - Disclosure - Share-Based Compensation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCommitmentsAndContingencies" id="Role_DisclosureCommitmentsAndContingencies">
        <link:definition>100090 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureDebt" id="Role_DisclosureDebt">
        <link:definition>100100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes">
        <link:definition>100110 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureFairValueMeasurements" id="Role_DisclosureFairValueMeasurements">
        <link:definition>100120 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureEloTransaction" id="Role_DisclosureEloTransaction">
        <link:definition>100130 - Disclosure - Elo Transaction</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCollaborationAndLicenseAgreements" id="Role_DisclosureCollaborationAndLicenseAgreements">
        <link:definition>100140 - Disclosure - Collaboration and License Agreements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureNetLossIncomePerShare" id="Role_DisclosureNetLossIncomePerShare">
        <link:definition>100150 - Disclosure - Net (Loss) Income Per Share</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureSegmentReporting" id="Role_DisclosureSegmentReporting">
        <link:definition>100160 - Disclosure - Segment Reporting</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesPolicies" id="Role_DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>100170 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationTables" id="Role_DisclosureShareBasedCompensationTables">
        <link:definition>100180 - Disclosure - Share-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCommitmentsAndContingenciesTables" id="Role_DisclosureCommitmentsAndContingenciesTables">
        <link:definition>100190 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureFairValueMeasurementTables" id="Role_DisclosureFairValueMeasurementTables">
        <link:definition>100200 - Disclosure - Fair Value Measurement (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureNetLossIncomePerShareTables" id="Role_DisclosureNetLossIncomePerShareTables">
        <link:definition>100210 - Disclosure - Net (Loss) Income Per Share (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" id="Role_DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails">
        <link:definition>100220 - Disclosure - Description of Business and Summary of Significant Accounting Policies - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureStockholdersEquityAdditionalInformationDetails" id="Role_DisclosureStockholdersEquityAdditionalInformationDetails">
        <link:definition>100230 - Disclosure - Stockholders&apos; Equity - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationAdditionalInformationDetails" id="Role_DisclosureShareBasedCompensationAdditionalInformationDetails">
        <link:definition>100240 - Disclosure - Share-Based Compensation - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationScheduleOfEmployeeAndNonemployeeStockBasedCompensationExpenseDetails" id="Role_DisclosureShareBasedCompensationScheduleOfEmployeeAndNonemployeeStockBasedCompensationExpenseDetails">
        <link:definition>100250 - Disclosure - Share-Based Compensation - Schedule of Employee and Nonemployee Stock-Based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationScheduleOfStockBasedCompensationExpenseDetails" id="Role_DisclosureShareBasedCompensationScheduleOfStockBasedCompensationExpenseDetails">
        <link:definition>100260 - Disclosure - Share-Based Compensation - Schedule of Stock-Based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationScheduleOfStockOptionsValuationAssumptionsUsingBlackScholesOptionPricingModelDetails" id="Role_DisclosureShareBasedCompensationScheduleOfStockOptionsValuationAssumptionsUsingBlackScholesOptionPricingModelDetails">
        <link:definition>100270 - Disclosure - Share-Based Compensation - Schedule of Stock Options Valuation Assumptions Using a Black-Scholes Option Pricing Model (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationSummaryOfActivityOfOptionPlansDetails" id="Role_DisclosureShareBasedCompensationSummaryOfActivityOfOptionPlansDetails">
        <link:definition>100280 - Disclosure - Share-Based Compensation - Summary of Activity of Option Plans (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureShareBasedCompensationSummaryOfActivityOfRsusDetails" id="Role_DisclosureShareBasedCompensationSummaryOfActivityOfRsusDetails">
        <link:definition>100290 - Disclosure - Share-Based Compensation - Summary of Activity of RSUs (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails" id="Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetails">
        <link:definition>100300 - Disclosure - Commitments and Contingencies - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleOfFutureLeasePaymentsUnderNonCancelableLeasesDetails" id="Role_DisclosureCommitmentsAndContingenciesScheduleOfFutureLeasePaymentsUnderNonCancelableLeasesDetails">
        <link:definition>100310 - Disclosure - Commitments and Contingencies - Schedule of Future Lease Payments under Non-Cancelable Leases (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleOfFutureLeasePaymentsUnderNonCancelableLeasesDetails2" id="Role_DisclosureCommitmentsAndContingenciesScheduleOfFutureLeasePaymentsUnderNonCancelableLeasesDetails2">
        <link:definition>100320 - Disclosure - Commitments and Contingencies - Schedule of Future Lease Payments under Non-Cancelable Leases (Details)2</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureDebtAdditionalInformationDetails" id="Role_DisclosureDebtAdditionalInformationDetails">
        <link:definition>100330 - Disclosure - Debt - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails" id="Role_DisclosureIncomeTaxesAdditionalInformationDetails">
        <link:definition>100340 - Disclosure - Income Taxes - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationDetails" id="Role_DisclosureFairValueMeasurementsAdditionalInformationDetails">
        <link:definition>100350 - Disclosure - Fair Value Measurements - Additional information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" id="Role_DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
        <link:definition>100360 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureEloTransactionAdditionalInformationDetails" id="Role_DisclosureEloTransactionAdditionalInformationDetails">
        <link:definition>100370 - Disclosure - Elo Transaction - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureCollaborationAndLicenseAgreementsAdditionalInformationDetails" id="Role_DisclosureCollaborationAndLicenseAgreementsAdditionalInformationDetails">
        <link:definition>100380 - Disclosure - Collaboration and License Agreements - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureNetLossIncomePerShareScheduleOfBasicAndDilutedNetLossIncomePerShareAttributableToCommonStockholdersDetails" id="Role_DisclosureNetLossIncomePerShareScheduleOfBasicAndDilutedNetLossIncomePerShareAttributableToCommonStockholdersDetails">
        <link:definition>100390 - Disclosure - Net (Loss) Income Per Share - Schedule Of Basic And Diluted Net (Loss) Income Per Share Attributable To Common Stockholders (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureNetLossIncomePerShareScheduleOfCommonShareEquivalentSecuritiesExcludedFromCalculationOfDilutedNetLossIncomePerShareDetails" id="Role_DisclosureNetLossIncomePerShareScheduleOfCommonShareEquivalentSecuritiesExcludedFromCalculationOfDilutedNetLossIncomePerShareDetails">
        <link:definition>100400 - Disclosure - Net (Loss) Income Per Share - Schedule of Common Share Equivalent Securities Excluded from Calculation of Diluted Net (Loss) Income per Share (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://precisionbiosciences.com/20220630/taxonomy/role/DisclosureSegmentReportingAdditionalInformationDetails" id="Role_DisclosureSegmentReportingAdditionalInformationDetails">
        <link:definition>100410 - Disclosure - Segment Reporting - Additional Information (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="dtil_LesseeOperatingLeaseLiabilityPaymentsDueInFiveYearsAndThereafter" name="LesseeOperatingLeaseLiabilityPaymentsDueInFiveYearsAndThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_AccruedClinicalAndResearchAndDevelopmentExpenses" name="AccruedClinicalAndResearchAndDevelopmentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_StockIssuedDuringPeriodCollaborationPartnersShares" name="StockIssuedDuringPeriodCollaborationPartnersShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_StockIssuedDuringPeriodValueCollaborationPartners" name="StockIssuedDuringPeriodValueCollaborationPartners" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_AmortizationOfDiscountOnNoteReceivable" name="AmortizationOfDiscountOnNoteReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_IncreaseDecreaseInOtherAssetsAndOtherCurrentAssets" name="IncreaseDecreaseInOtherAssetsAndOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_IncreaseDecreaseInAccruedOtherExpensesAndOtherCurrentLiabilities" name="IncreaseDecreaseInAccruedOtherExpensesAndOtherCurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_IncreaseDecreaseInLeaseLiabilityAndRightToUseAssetOtherThanAmortizationNet" name="IncreaseDecreaseInLeaseLiabilityAndRightToUseAssetOtherThanAmortizationNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_IncreaseDecreaseInContractLiability" name="IncreaseDecreaseInContractLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_ProceedsFromEmployeeStockPurchasePlan" name="ProceedsFromEmployeeStockPurchasePlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_UnsettledAtTheMarketIssuancesOfCommonStockIncludedInOtherCurrentAssets" name="UnsettledAtTheMarketIssuancesOfCommonStockIncludedInOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_ContractLiabilityAccrualRelatedToServierProgramPurchaseAgreementMilestones" name="ContractLiabilityAccrualRelatedToServierProgramPurchaseAgreementMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_DeconsolidationOfSubsidiaryDisclosureTextBlock" name="DeconsolidationOfSubsidiaryDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_DeconsolidationOfSubsidiaryAbstract" name="DeconsolidationOfSubsidiaryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesLineItems" name="DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTable" name="DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_PrecisionPlantSciencesIncMember" name="PrecisionPlantSciencesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_PrecisionBioSciencesUKLimitedMember" name="PrecisionBioSciencesUKLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_NovartisAgreementMember" name="NovartisAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_UnderwritingDiscountsAndCommission" name="UnderwritingDiscountsAndCommission" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_CommonAndPreferredStocksSharesAuthorized" name="CommonAndPreferredStocksSharesAuthorized" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_TwoThousandSixAndTwoThousandFifteenStockIncentivePlanMember" name="TwoThousandSixAndTwoThousandFifteenStockIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_TwoThousandNineteenIncentiveAwardPlanMember" name="TwoThousandNineteenIncentiveAwardPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_TwoThousandNineteenEmployeeStockPurchasePlanMember" name="TwoThousandNineteenEmployeeStockPurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_EmployeeStockPurchasePlanMember" name="EmployeeStockPurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_InducementAwardPlanMember" name="InducementAwardPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForIssuance" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_AllowedAnnualPercentageIncreaseInSharesAuthorizedAsPercentageOfOutstandingSharesOfCommonStock" name="AllowedAnnualPercentageIncreaseInSharesAuthorizedAsPercentageOfOutstandingSharesOfCommonStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_IncreaseInCommonStockAvailableForIssuance" name="IncreaseInCommonStockAvailableForIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_NumberofSharesIssuedUnderEmployeeStockPurchasePlans" name="NumberofSharesIssuedUnderEmployeeStockPurchasePlans" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValuePerOption" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValuePerOption" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_ProductDevelopmentAndCommercializationPeriod" name="ProductDevelopmentAndCommercializationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_CommitmentAndContingenciesTable" name="CommitmentAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_ContractLiabilitiesMember" name="ContractLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_SupplyAgreementsMember" name="SupplyAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_AgreementTerminationNoticePeriod" name="AgreementTerminationNoticePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_EloLoanMember" name="EloLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_PacificWesternLoanAgreementMember" name="PacificWesternLoanAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_SeventhAmendmentToRevolvingLineMember" name="SeventhAmendmentToRevolvingLineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_EquityIssuanceAgreementMember" name="EquityIssuanceAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_IECUREMember" name="IECUREMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_ChangeInFairValueOfDebtFees" name="ChangeInFairValueOfDebtFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_InvestmentInIECUREMember" name="InvestmentInIECUREMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_SuccessFeeMember" name="SuccessFeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_FinalPaymentFeeMember" name="FinalPaymentFeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DisclosureEloTransactionAdditionalInformationDetailsAbstract" name="DisclosureEloTransactionAdditionalInformationDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DeconsolidationOfSubsidiaryLineItems" name="DeconsolidationOfSubsidiaryLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DeconsolidationOfSubsidiaryTable" name="DeconsolidationOfSubsidiaryTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_PromissoryNoteMember" name="PromissoryNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_NewEloMember" name="NewEloMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_PercentageOfPremiumOverVolumeWeightedAveragePriceOfCompanySCommonStock" name="PercentageOfPremiumOverVolumeWeightedAveragePriceOfCompanySCommonStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_NumberOfTradingDays" name="NumberOfTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dtil_UpfrontCompensation" name="UpfrontCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_TransactionPriceAllocatedToTheRevenueArrangement" name="TransactionPriceAllocatedToTheRevenueArrangement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_NovartisPharmaAGMember" name="NovartisPharmaAGMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_StockPurchaseAgreementMember" name="StockPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_CurrentLiabilitiesMember" name="CurrentLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_EliLillyAndCompanyMember" name="EliLillyAndCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_ProgramPurchaseAgreementMember" name="ProgramPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_ServierMember" name="ServierMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_DevelopmentAndCommercialLicenseAgreementMember" name="DevelopmentAndCommercialLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dtil_AggregatePotentialMilestonePaymentsReceivable" name="AggregatePotentialMilestonePaymentsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dtil_ObligationToPayRoyaltiesExpiryDate" name="ObligationToPayRoyaltiesExpiryDate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dtil_TransactionPriceFromTheStockPurchaseAgreement" name="TransactionPriceFromTheStockPurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_WaiverOfMilestonePayment" name="WaiverOfMilestonePayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dtil_UnsettledEmployeeStockPurchasePlanContributionsMember" name="UnsettledEmployeeStockPurchasePlanContributionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
