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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>29676</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>HEATHER KLING</PersonNm>
        <TitleTxt>SENIOR CLINICAL SCIENTIST</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>196577</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>18855</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NAWEEN TAMJIDI</PersonNm>
        <TitleTxt>SR. MGR,TRIAL OPERATIONS</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>193858</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>19100</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>4057350</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>323276</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>24</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>IQVIA</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1700 PERIMETER PARK DR</AddressLine1Txt>
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            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>27560</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CRO SERVICES</ServicesDesc>
        <CompensationAmt>15877603</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>MEDIDATA</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>350 HUDSON ST 9TH FLOOR</AddressLine1Txt>
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            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10014</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>DATA SERVICES</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>BERRY CONSULTANTS LLC</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
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          </USAddress>
        </ContractorAddress>
        <ServicesDesc>STATISTICAL CONSULTATION</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>VOIANT</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1171 S ROBERTSON BLVD PMB 414</AddressLine1Txt>
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            <ZIPCd>90035</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CLINICAL RESEARCH</ServicesDesc>
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      <CntrctRcvdGreaterThan100KCnt>4</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>1668304</AllOtherContributionsAmt>
      <TotalContributionsAmt>1668304</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>TRIAL REVENUE</Desc>
        <BusinessCd>541700</BusinessCd>
        <TotalRevenueColumnAmt>24168345</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>24168345</RelatedOrExemptFuncIncomeAmt>
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      <TotalProgramServiceRevenueAmt>24168345</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1854131</TotalRevenueColumnAmt>
        <ExclusionAmt>1854131</ExclusionAmt>
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      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>18367215</SecuritiesAmt>
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        <SecuritiesAmt>18369507</SecuritiesAmt>
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      <GainOrLossGrp>
        <SecuritiesAmt>-2292</SecuritiesAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-2292</TotalRevenueColumnAmt>
        <ExclusionAmt>-2292</ExclusionAmt>
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      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>27688488</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>24168345</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1851839</ExclusionAmt>
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      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>16019</TotalAmt>
        <ProgramServicesAmt>16019</ProgramServicesAmt>
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      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>3190221</TotalAmt>
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      <PensionPlanContributionsGrp>
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      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>239065</ProgramServicesAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>351750</TotalAmt>
        <ProgramServicesAmt>249834</ProgramServicesAmt>
        <ManagementAndGeneralAmt>101916</ManagementAndGeneralAmt>
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      <FeesForServicesLegalGrp>
        <TotalAmt>44822</TotalAmt>
        <ProgramServicesAmt>29253</ProgramServicesAmt>
        <ManagementAndGeneralAmt>15569</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>53804</TotalAmt>
        <ManagementAndGeneralAmt>53804</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>66764</TotalAmt>
        <ManagementAndGeneralAmt>66764</ManagementAndGeneralAmt>
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      <FeesForServicesOtherGrp>
        <TotalAmt>21197420</TotalAmt>
        <ProgramServicesAmt>21195588</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1832</ManagementAndGeneralAmt>
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      <AdvertisingGrp>
        <TotalAmt>8339</TotalAmt>
        <ManagementAndGeneralAmt>8339</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>45322</TotalAmt>
        <ProgramServicesAmt>7203</ProgramServicesAmt>
        <ManagementAndGeneralAmt>38119</ManagementAndGeneralAmt>
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      <InformationTechnologyGrp>
        <TotalAmt>109948</TotalAmt>
        <ProgramServicesAmt>11043</ProgramServicesAmt>
        <ManagementAndGeneralAmt>98905</ManagementAndGeneralAmt>
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      <OccupancyGrp>
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        <ManagementAndGeneralAmt>12927</ManagementAndGeneralAmt>
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      <TravelGrp>
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        <ProgramServicesAmt>78633</ProgramServicesAmt>
        <ManagementAndGeneralAmt>216935</ManagementAndGeneralAmt>
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      <ConferencesMeetingsGrp>
        <TotalAmt>53947</TotalAmt>
        <ProgramServicesAmt>3422</ProgramServicesAmt>
        <ManagementAndGeneralAmt>50525</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>141440</TotalAmt>
        <ProgramServicesAmt>17620</ProgramServicesAmt>
        <ManagementAndGeneralAmt>123820</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>CREDIT LOSS</Desc>
        <TotalAmt>1224000</TotalAmt>
        <ManagementAndGeneralAmt>1224000</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>30895157</TotalAmt>
        <ProgramServicesAmt>26800521</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4094636</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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      <CashNonInterestBearingGrp>
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        <EOYAmt>874264</EOYAmt>
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      <SavingsAndTempCashInvstGrp>
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        <EOYAmt>3948737</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>702464</EOYAmt>
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        <EOYAmt>4705822</EOYAmt>
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        <EOYAmt>3555673</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>37399235</EOYAmt>
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      <InvestmentsOtherSecuritiesGrp>
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        <EOYAmt>12416075</EOYAmt>
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      <TotalAssetsGrp>
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        <EOYAmt>63602270</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>5722820</EOYAmt>
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        <EOYAmt>18132292</EOYAmt>
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        <EOYAmt>500000</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>24355112</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>39993270</BOYAmt>
        <EOYAmt>39247158</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>63602270</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>-3206669</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>2460557</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
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        <CurrentTaxYearMinus3YearsAmt>504130</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>543271</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3081228</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1668304</CurrentTaxYearAmt>
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      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
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        <CurrentTaxYearMinus3YearsAmt>504130</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>543271</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3081228</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1668304</CurrentTaxYearAmt>
        <TotalAmt>6162705</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>3523006</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>2639699</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>5866</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>5504</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>483944</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1733052</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1854131</CurrentTaxYearAmt>
        <TotalAmt>4082497</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>10245202</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>136180649</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.25770</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.37100</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsPY170Ind>X</ThirtyThrPctSuprtTestsPY170Ind>
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    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
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      <OtherSecuritiesGrp>
        <Desc>MONEY MARKET FUNDS</Desc>
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        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
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      <OtherLiabilitiesOrgGrp>
        <Desc>REFUNDABLE ADVANCE</Desc>
        <Amt>500000</Amt>
      </OtherLiabilitiesOrgGrp>
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      <TotalRevEtcAuditedFinclStmtAmt>30126891</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>2460557</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>44610</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>-66764</OtherRevenueAmt>
      <RevenueNotReportedAmt>2438403</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>27688488</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>27688488</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>30873003</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>44610</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>44610</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>30828393</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>66764</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>66764</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>30895157</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INVESTMENT FEES -66,764.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NATIONAL BRAIN TUMOR SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>55 CHAPEL STREET SUITE 006</AddressLine1Txt>
          <CityNm>NEWTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02458</ZIPCd>
        </USAddress>
        <RecipientEIN>043068130</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GBM AWARENESS DAY AND WALK SPONSORSHIP</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>1</Total501c3OrgCnt>
      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GRANTS WE ISSUED WERE UNRESTRICTED AND ARE INTENDED TO HELP SUPPORT THE RESPECTIVE ORGANIZATION'S MISSION. WE HAVE ASKED EACH ORGANIZATION TO KEEP ALL RECORDS OF THE USE OF THE GIFT IN THE NORMAL COURSE AND PROVIDE COPIES UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
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      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MEREDITH BUXTON</PersonNm>
        <TitleTxt>CHIEF EXECUTIVE OFFICER/PRESIDENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>581800</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>350000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>600</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>23550</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>48579</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>1004529</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBERT MURRAY</PersonNm>
        <TitleTxt>CHIEF BUSINESS AND STRATEGY OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>359076</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>170000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>19633</DeferredCompensationFlngOrgAmt>
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        <TotalCompensationFilingOrgAmt>549909</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RACHAEL COLEMAN</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <DeferredCompensationFlngOrgAmt>19633</DeferredCompensationFlngOrgAmt>
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        <TotalCompensationFilingOrgAmt>535825</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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        <PersonNm>ASHLEY POWELL</PersonNm>
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        <DeferredCompensationFlngOrgAmt>16400</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>30068</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>456468</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MATTHEW VIVA</PersonNm>
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        <TotalCompensationFilingOrgAmt>286862</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>TRACEY ROBERTS</PersonNm>
        <TitleTxt>DIRECTOR, TRIAL OPERATIONS</TitleTxt>
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        <NontaxableBenefitsFilingOrgAmt>19806</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>276426</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SARAH UNTCH</PersonNm>
        <TitleTxt>DIRECTOR, TRIAL OPERATIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>201507</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>37450</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>100</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>10058</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19501</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>268616</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RACHEL ROSENSTEIN SISSON</PersonNm>
        <TitleTxt>SR DIR, COMMUNICATIONS/LEARNING AND</TitleTxt>
        <BaseCompensationFilingOrgAmt>166950</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>29216</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>534</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12418</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>216973</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HEATHER KLING</PersonNm>
        <TitleTxt>SENIOR CLINICAL SCIENTIST</TitleTxt>
        <BaseCompensationFilingOrgAmt>166827</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>29750</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7707</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>11148</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>215432</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NAWEEN TAMJIDI</PersonNm>
        <TitleTxt>SR. MGR,TRIAL OPERATIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>164983</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GARY GORDON MD PHD</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>TIMOTHY CLOUGHESY MD</PersonNm>
        <TitleTxt>CHIEF MEDICAL OFFICER AND DIRECTOR</TitleTxt>
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    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>ACTIV-4, A SMALL FEDERALLY FUNDED PROGRAM SUPPORTING COVID-19 RESEARCH CONCLUDED ITS WIND-DOWN PHASE AND OFFICIALLY ENDED IN JUNE 2024</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>CFO WILL REVIEW WITH ACCOUNTING FIRM. ONCE NEAR FINAL WILL REVIEW WITH CEO. WHEN FORM IS FINAL, FORM IS REVIEWED WITH THE ENTIRE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>EACH DIRECTOR AND OFFICER IS REQUIRED TO SUBMIT AN UPDATED CONFLICT OF INTEREST STATEMENT ON AN ANNUAL BASIS. TO THE EXTENT THAT RELATIONSHIPS ARE IDENTIFIED VIA THESE STATEMENTS AND OTHER INFORMATION, THE INDIVIDUAL'S CONSTITUENT RECORD IN THE COMPANY DATABASE IS UPDATED TO INCLUDE THIS INFORMATION, FACILITATING PERIODIC QUERIES, AS NECESSARY. ANY BOARD MEMBER WITH A CONFLICT MUST IDENTIFY THE CONFLICT AT ANY BOARD MEETING WHERE THE CONFLICT IS RELEVANT. THE MEMBER CANNOT BE PRESENT AT ANY PART OF THE MEETING WHERE THE RELEVANT TOPIC IS DISCUSSED OR VOTED ON. THE MEMBER CANNOT BE COUNTED FOR A QUORUM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE AND BOARD OF DIRECTORS ARE RESPONSIBLE FOR THE REVIEW AND APPROVAL OF TOP LEVEL EXECUTIVE MANAGEMENT COMPENSATION ANNUALLY. INDEPENDENT PROFESSIONAL EXPERTS ARE CALLED UPON FOR HIGHER LEVEL POSITIONS AND ASSIST IN ESTABLISHING EXECUTIVE SALARIES IN THE COMPETITIVE MARKETPLACE. SALARIES IN BOTH FOR PROFIT AND NOT FOR PROFIT ORGANIZATIONS ARE EVALUATED WITH THE INTENT ON ENSURING THAT THE EXECUTIVE COMPENSATION PROGRAM FALLS WITHIN A REASONABLE RANGE OF COMPETITIVE PRACTICES FOR COMPARABLE POSITIONS AMONG SIMILARLY SITUATED ORGANIZATIONS. THE REVIEW INCLUDES INCENTIVE PLANS AND ALL FRINGE BENEFITS AS WELL AS BASE SALARY ARRANGEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>TRIAL EXPENSES: PROGRAM SERVICE EXPENSES 21,195,588. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 21,195,588. 401K MANAGEMENT: PROGRAM SERVICE EXPENSES 0. MANAGEMENT AND GENERAL EXPENSES 1,832. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 1,832.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>