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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3 Arrangement used to establish the top management official's compensation</FormAndLineReferenceDesc>
        <ExplanationTxt>PER DFCI AND AFFILIATES' EXECUTIVE COMPENSATION PHILOSOPHY, ANNUALLY DFCI'S COMPENSATION COMMITTEE OF THE BOARD OF TRUSTEES REVIEWS THE DFCI PRESIDENT'S (DFI'S PRESIDENT) PERFORMANCE AND MAKES A RECOMMENDATION REGARDING COMPENSATION TO DFCI'S EXECUTIVE COMMITTEE, WHICH THEN APPROVES SUCH COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4b Supplemental nonqualified retirement plan</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING INDIVIDUALS PARTICIPATE IN 457(F) PLANS ESTABLISHED BY DFCI; TAXABLE AMOUNTS ARE INCLUDED IN REPORTABLE COMPENSATION IN SCHEDULE J, PART II, COLUMN (B)(III): LAURIE H. GLIMCHER, MD 2,162,958 EDWARD J. BENZ JR., MD 1,779,950 MICHAEL L. RENEY 45,597 RICHARD S. BOSKEY, ESQ 28,155</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="21014044" softwareVersionNum="2021v4.2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a PROCESS TO ESTABLISH COMPENSATION OF TOP MANAGEMENT OFFICIAL</FormAndLineReferenceDesc>
        <ExplanationTxt>PER DFCI AND AFFILIATES' EXECUTIVE COMPENSATION PHILOSOPHY, ANNUALLY DFCI'S COMPENSATION COMMITTEE OF THE BOARD OF TRUSTEES REVIEWS THE DFCI PRESIDENT'S (DFI'S PRESIDENT) PERFORMANCE AND MAKES A RECOMMENDATION REGARDING COMPENSATION TO DFCI'S EXECUTIVE COMMITTEE, WHICH THEN APPROVES SUCH COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12a Line 13, and Line 14</FormAndLineReferenceDesc>
        <ExplanationTxt>Written CONFLICT OF INTEREST, Whistle-blower, AND DOCUMENT RETENTION DESTRUCTION POLICIES DFI is organized to support the activities of DFCI, and DFCI maintains the required whistle-blower policy, document retention policy and conflicts-of-interest policy. Since DFCI employees perform all key functions for DFI, DFI is covered by the DFCI required policies.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 2 Family/business relationships amongst interested persons</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. LAURIE GLIMCHER, MR. MICHAEL RENEY, AND MR. JOHN RYAN WERE EMPLOYED BY DANA-FARBER CANCER INSTITUTE, INC. (DFCI), AN ENTITY OVER WHICH THE OTHER TRUSTEES OF DANA-FARBER, INC. (DFI) WERE ALSO TRUSTEES. - Business relationship</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>DFCI IS THE SOLE CORPORATE MEMBER OF DFI AND DFCI AS SOLE MEMBER HAS THE RIGHT TO ELECT THOSE INDIVIDUALS WHO WILL SERVE EX OFFICIO AS TRUSTEES OF DFI, TO AMEND DFI'S BYLAWS, AND OTHER CERTAIN GOVERNANCE DECISIONS RESERVED TO IT UNDER STATE LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>DFCI IS THE SOLE CORPORATE MEMBER OF DFI AND DFCI AS SOLE MEMBER HAS THE RIGHT TO ELECT THOSE INDIVIDUALS WHO WILL SERVE EX OFFICIO AS TRUSTEES OF DFI, TO AMEND DFI'S BYLAWS, AND OTHER CERTAIN GOVERNANCE DECISIONS RESERVED TO IT UNDER STATE LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>DFCI IS THE SOLE CORPORATE MEMBER OF DFI AND DFCI AS SOLE MEMBER HAS THE RIGHT TO ELECT THOSE INDIVIDUALS WHO WILL SERVE EX OFFICIO AS TRUSTEES OF DFI, TO AMEND DFI'S BYLAWS, AND OTHER CERTAIN GOVERNANCE DECISIONS RESERVED TO IT UNDER STATE LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DANA-FARBER CANCER INSTITUTE TAX DEPARTMENT PROVIDES ALL FINANCIAL ANALYSIS AND OTHER INFORMATION TO BE INCLUDED ON THE TAX RETURN TO ITS EXTERNAL TAX PREPARER, ERNST YOUNG LLP, WHICH PREPARES THE DRAFT RETURN. THE DRAFT RETURN IS REVIEWED BY THE DFCI TAX MANAGER, AS WELL AS THE DFCI OFFICE OF GENERAL COUNSEL AND THEN THE CHIEF FINANCIAL OFFICER APPROVES THE RETURN. A FINAL VERSION OF THE FORM IS MADE AVAILABLE TO THE BOARD BEFORE FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>DFI IS SUBJECT TO THE DANA-FARBER CANCER INSTITUTE, INC. ("DFCI OR THE "INSTITUTE") BOARD OF TRUSTEES POLICY ON CONFLICTS OF INTEREST AND CONFIDENTIALITY (THE "COI POLICY"). UNDER THE TERMS OF THE COI POLICY, DFI, THROUGH DFCI'S CONFLICT-RELATED PRACTICES, MONITORS AND ENFORCES COMPLIANCE WITH THE COI POLICY BY BOARD OFFICERS, TRUSTEES, AND KEY EMPLOYEES ("COVERED PERSONS") OF DFI. THOSE PRACTICES INCLUDE ANNUAL COLLECTION AND REVIEW OF RESPONSES TO A CONFLICT OF INTEREST QUESTIONNAIRE AND CONFIDENTIALITY STATEMENT (THE "STATEMENT") REQUIRING ALL COVERED PERSONS TO DISCLOSE INTERESTS, ROLES, AND ACTIVITIES THAT COULD GIVE RISE TO A POTENTIAL OR ACTUAL CONFLICT WITH THE INTERESTS OF DFI. IF A TRUSTEE FAILS TO COMPLETE THE ANNUAL STATEMENT, THE CHAIR OF THE GOVERNANCE COMMITTEE OF THE DFCI BOARD MAY TAKE ACTIONS TO SUSPEND THE TRUSTEE. THE INSTITUTE REQUIRES COVERED PERSONS OF DFI TO COMPLETE THE STATEMENT UPON INITIAL APPOINTMENT TO A COVERED OFFICE AND TO UPDATE THEIR DISCLOSURES ON A CONTINUING BASIS WHENEVER A COVERED PERSON BECOMES AWARE OF A NEW OR PREVIOUSLY UNDISCLOSED INTEREST. THE OFFICE OF GENERAL COUNSEL COMPARES THE DISCLOSURES TO INSTITUTIONAL INFORMATION IN ORDER TO IDENTIFY POTENTIAL OR ACTUAL CONFLICTS OF INTEREST. THE DFCI GENERAL COUNSEL REPORTS ON ALL DISCLOSURES TO THE DFCI PRESIDENT, CHAIR OF THE DFCI BOARD AND CHAIR OF THE DFCI BOARD GOVERNANCE COMMITTEE. THE DFCI GENERAL COUNSEL WILL ALSO INFORM THE CHAIR OF THE BOARD OF DFI OF DISCLOSURES RELEVANT TO THE AFFAIRS OF DFI. THE BOARD OF DFI IS RESPONSIBLE UNDER THE COI POLICY FOR ADDRESSING ISSUES RELATED TO CONFLICTS OF COVERED PERSONS OF DFI. A PROPOSED ARRANGEMENT CREATING A CONFLICT-OF-INTEREST MAY BE APPROVED IF APPROPRIATE STEPS ARE TAKEN TO ENSURE THAT DFI MAKES A DECISION IN AN OBJECTIVE AND FAIR MANNER CONSISTENT WITH THE HIGHEST ETHICAL AND LEGAL STANDARDS. SUCH STEPS INCLUDE RECUSAL OF THE COVERED PERSON WITH A CONFLICT OF INTEREST FROM NEGOTIATIONS OR DISCUSSIONS ON BEHALF OF DFI OR THE ENTITY WITH WHICH DFI IS DOING BUSINESS AND FROM BOARD OR MANAGEMENT DISCUSSIONS OF SUCH ARRANGEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS: THE GOVERNING DOCUMENTS ARE AVAILABLE UPON REQUEST. THE GOVERNING DOCUMENTS ARE ALSO AVAILABLE TO THE PUBLIC ON THE SECRETARY OF THE COMMONWEALTH'S WEBSITE. CONFLICT OF INTEREST POLICY: DFI IS SUBJECT TO THE DANA-FARBER CANCER INSTITUTE, INC. BOARD OF TRUSTEES POLICY ON CONFLICTS OF INTEREST AND CONFIDENTIALITY (THE "COI POLICY"). THE COI POLICY IS AVAILABLE UPON REQUEST. FINANCIAL STATEMENTS: THE ORGANIZATION USES THE SERVICES OF DIGITAL ASSURANCE CERTIFICATION LLC (DAC) TO REPORT ANNUAL AUDITED FINANCIAL STATEMENTS AND OTHER RELEVANT ORGANIZATIONAL INFORMATION AS REQUIRED BY CERTAIN REGULATORY AND TAX LAWS. DAC IS A WEBSITE (WWW.DACBOND.COM) FREE TO THE PUBLIC THAT PUBLISHES TAX-EXEMPT BOND ISSUERS' FINANCIAL AND LEGAL DOCUMENTS SUCH AS THE AUDITED FINANCIAL STATEMENTS. FISCAL YEAR 2016 THROUGH THE LATEST ISSUE DATE OF THE AUDITED CONSOLIDATED FINANCIAL STATEMENTS FOR DANA-FARBER CANCER INSTITUTE, INC. AND DANA-FARBER, INC. CAN BE FOUND ON THE DAC WEBSITE. ANNUAL AUDITED FINANCIAL STATEMENTS FROM FISCAL YEAR 1998 THROUGH FISCAL YEAR 2015 ARE AVAILABLE UPON REQUEST</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>TRANSFER OF NET ASSETS TO DFCI - XXX-XX-XXXX;</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR" softwareId="21014044" softwareVersionNum="2021v4.2">
      <IdDisregardedEntitiesGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BINNEY STREET CAPITAL FUND LLC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>450 BROOKLINE AVE BP418</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02215</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>investments</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <TotalIncomeAmt>-1234555</TotalIncomeAmt>
        <EndOfYearAssetsAmt>3490766</EndOfYearAssetsAmt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>DFI</BusinessNameLine1Txt>
        </DirectControllingEntityName>
      </IdDisregardedEntitiesGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>DANA-FARBER CANCER INSTITUTE INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>450 BROOKLINE AVENUE</AddressLine1Txt>
          <AddressLine2Txt>BP418</AddressLine2Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02215</ZIPCd>
        </USAddress>
        <EIN>042263040</EIN>
        <PrimaryActivitiesTxt>CANCER CARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>DANA-FARBER TRUST INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>450 BROOKLINE AVENUE</AddressLine1Txt>
          <AddressLine2Txt>BP418</AddressLine2Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02215</ZIPCd>
        </USAddress>
        <EIN>300195757</EIN>
        <PrimaryActivitiesTxt>receive real estate gifts for DFCI</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Type I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>DFCI</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>FRIENDS OF DANA-FARBER CANCER INSTITUTE</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>450 BROOKLINE AVENUE</AddressLine1Txt>
          <AddressLine2Txt>BP418</AddressLine2Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02215</ZIPCd>
        </USAddress>
        <EIN>371613621</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Type I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>DFCI</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>DANA-FARBER CANCER CARE NETWORK INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>450 BROOKLINE AVENUE</AddressLine1Txt>
          <AddressLine2Txt>BP418</AddressLine2Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02215</ZIPCd>
        </USAddress>
        <EIN>465138314</EIN>
        <PrimaryActivitiesTxt>CANCER CARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>DFCI</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>true</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>true</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>dana-farber cancer institute inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>R</TransactionTypeTxt>
        <InvolvedAmt>332040564</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>cash</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>dana-farber cancer institute inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>S</TransactionTypeTxt>
        <InvolvedAmt>156581944</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>cash</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
