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        <ExplanationTxt>THE BYLAWS OF THE ORGANIZATION PROVIDE THAT THE BOARD OF DIRECTORS APPOINT THEIR OWN SUCCESSORS. CURRENTLY, AND SINCE 1996, NO LESS THAN A SIMPLE MAJORITY (CURRENTLY FIVE OF SEVEN) OF THE DIRECTORS OF THE ORGANIZATION ARE ALSO A TRUSTEE, CORPORATE OFFICER OR SENIOR FACULTY MEMBER OF THE WASHINGTON UNIVERSITY. IN THIS WAY, THE WASHINGTON UNIVERSITY HAS EFFECTIVE CONTROL OF THE ORGANIZATION AND THE FUTURE COMPOSITION OF ITS BOARD OF DIRECTORS. MOREOVER, THE OPERATIONS OF THE ORGANIZATION ARE INTEGRALLY COMBINED WITH THE OPERATIONS OF THE WASHINGTON UNIVERSITY THROUGH THE OPERATION OF AN ACADEMIC MEDICAL CENTER. THE ORGANIZATION PROVIDES THE FOLLOWING SERVICES IN SUPPORT OF THE MEDICAL CENTER: (A)PROVIDING FINANCIAL SUPPORT FOR MEDICAL, SURGICAL AND/OR NURSING CARE TO PERSONS SUFFERING FROM CANCER OR SKIN DISEASES OR DISEASES ALLIED THERETO WHO ARE UNABLE TO PAY FOR SUCH CARE, (B) THE STUDY OF CANCER, AND (C) OUTREACH PROGRAMS AND THE DISSEMINATION OF INFORMATION IN REGARD TO THESE DISEASES AND THEIR TREATMENT, INCLUDING OPERATION OF THE BARNARD HEALTH AND CANCER INFORMATION CENTER WITHIN THE MEDICAL CENTER'S SITEMAN CANCER CENTER. ON JULY 1, 2016, THE BYLAWS WERE AMENDED TO PROVIDE THAT THE CHANCELLOR OF THE WASHINGTON UNIVERSITY, OR HIS/HER DESIGNEE, MUST APPROVE ALL APPOINTMENTS TO THE BOARD OF DIRECTORS.</ExplanationTxt>
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        <ExplanationTxt>THE BYLAWS OF THE ORGANIZATION PROVIDE THAT THE BOARD OF DIRECTORS APPOINT THEIR OWN SUCCESSORS. CURRENTLY, AND SINCE 1996, NO LESS THAN A SIMPLE MAJORITY (CURRENTLY FIVE OF SEVEN) OF THE DIRECTORS OF THE ORGANIZATION ARE ALSO A TRUSTEE, CORPORATE OFFICER OR SENIOR FACULTY MEMBER OF THE WASHINGTON UNIVERSITY. IN THIS WAY, THE WASHINGTON UNIVERSITY HAS EFFECTIVE CONTROL OF THE ORGANIZATION AND THE FUTURE COMPOSITION OF ITS BOARD OF DIRECTORS. MOREOVER, THE OPERATIONS OF THE ORGANIZATION ARE INTEGRALLY COMBINED WITH THE OPERATIONS OF THE WASHINGTON UNIVERSITY THROUGH THE OPERATION OF AN ACADEMIC MEDICAL CENTER. THE ORGANIZATION PROVIDES THE FOLLOWING SERVICES IN SUPPORT OF THE MEDICAL CENTER: (A) PROVIDING FINANCIAL SUPPORT FOR MEDICAL, SURGICAL AND/OR NURSING CARE TO PERSONS SUFFERING FROM CANCER OR SKIN DISEASES OR DISEASES ALLIED THERETO WHO ARE UNABLE TO PAY FOR SUCH CARE, (B) THE STUDY OF CANCER, AND (C) OUTREACH PROGRAMS AND THE DISSEMINATION OF INFORMATION IN REGARD TO THESE DISEASES AND THEIR TREATMENT, INCLUDING OPERATION OF THE BARNARD HEALTH AND CANCER INFORMATION CENTER WITHIN THE MEDICAL CENTER'S SITEMAN CANCER CENTER. ON JULY 1, 2016, THE BYLAWS WERE AMENDED TO PROVIDE THAT THE CHANCELLOR OF THE WASHINGTON UNIVERSITY, OR HIS/HER DESIGNEE, MUST APPROVE THE APPOINTMENT OF ALL BOARD MEMBERS.</ExplanationTxt>
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      <SupplementalInformationDetail>
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    </IRS990ScheduleD>
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          <CityNm>ST LOUIS</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
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      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
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        <TitleTxt>SECRETARY</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>192593</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>21870</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>25583</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>34864</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>274910</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GRAHAM COLDITZ</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>222161</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>206425</BonusRelatedOrganizationsAmt>
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        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>558804</TotalCompensationRltdOrgsAmt>
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        <PersonNm>MARY CORCORAN</PersonNm>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>462051</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN DIPERSIO</PersonNm>
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        <OtherCompensationRltdOrgsAmt>37407</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsRltdOrgsAmt>30997</NontaxableBenefitsRltdOrgsAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BETTINA DRAKE</PersonNm>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>TIMOTHY EBERLEIN</PersonNm>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DAVID PERLMUTTER</PersonNm>
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        <TotalCompensationRltdOrgsAmt>2312720</TotalCompensationRltdOrgsAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>AMYE KIM</PersonNm>
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        <OtherCompensationRltdOrgsAmt>18809</OtherCompensationRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>AMY KWESKIN</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>462330</CompensationBasedOnRltdOrgsAmt>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>22781</OtherCompensationRltdOrgsAmt>
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        <DeferredCompRltdOrgsAmt>35075</DeferredCompRltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>A RELATED ORGANIZATION PROVIDES A SEC. 457(F) SUPPLEMENTAL RETIREMENT PLAN FOR CERTAIN PERSONS LISTED IN PART VII.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ELECTION OR REMOVAL OF ALL MEMBERS OF THE GOVERNING BODY AND AMENDMENTS TO THE ARTICLES OF INCORPORATION AND BYLAWS ARE SUBJECT TO THE APPROVAL OF THE CHANCELLOR OF THE WASHINGTON UNIVERSITY, A RELATED ORGANIZATION, OR HIS/HER DESIGNEE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS REVIEWED BY THE PRESIDENT AND TREASURER OF THE ORGANIZATION. THE FORM IS ALSO REVIEWED BY THE DIRECTOR OF EXTERNAL REPORTING FOR WASHINGTON UNIVERSITY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL OFFICERS AND DIRECTORS FOLLOW THE CONFLICT OF INTEREST POLICY OF THE RELATED ORGANIZATON.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY AVAILABLE TO THE PUBLIC UPON REQUEST BY SENDING A COPY TO THE PERSON MAKING THE REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION DOES NOT PAY COMPENSATION TO THE INDIVIDUALS LISTED IN PART VI, SECTION B, LINES 15A AND 15B.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>CHANGE IN VALUE OF SPLIT INTEREST $146,949</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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          <BusinessNameLine1Txt>WASHINGTON UNIVERSITY</BusinessNameLine1Txt>
        </DisregardedEntityName>
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          <AddressLine1Txt>1 BROOKINGS DRIVE</AddressLine1Txt>
          <CityNm>ST LOUIS</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
          <ZIPCd>63130</ZIPCd>
        </USAddress>
        <EIN>430653611</EIN>
        <PrimaryActivitiesTxt>EDUCATION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MO</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>2</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>true</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
