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        <CurrentTaxYearMinus1YearAmt>512146</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>729024</CurrentTaxYearAmt>
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        <CurrentTaxYearMinus3YearsAmt>2348988</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>500814</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>512146</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>729024</CurrentTaxYearAmt>
        <TotalAmt>5413076</TotalAmt>
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      <SubstantialContributorsTotAmt>1112998</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>4300078</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>24636</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>22640</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>66687</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>18061</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>22229</CurrentTaxYearAmt>
        <TotalAmt>154253</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus3YearsAmt>10106</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>230107</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>220019</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>22483</CurrentTaxYearAmt>
        <TotalAmt>482715</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>6050044</TotalSupportAmt>
      <PublicSupportCY170Pct>0.71080</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.66270</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <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>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>810983</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>38817</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>38817</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>772166</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>1570</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>1570</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>773736</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1191097</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>1191097</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>1570</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>1570</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>1192667</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>FIN 48 Note from Audited Financials The Foundation was granted an exemption from federal income taxes by the Internal Revenue Service pursuant to the provisions of Internal Revenue Code (IRC) Section 501(c)(3). Contributions to the Foundation qualify for the charitable contribution deduction pursuant to IRS Section 170(b)(1)(A)(vi) and has been classified as a Foundation that is not a private Foundation under Section 509(a)(1). The tax-exempt purpose of the Foundation and the nature in which it operates is described above. Management believes the Foundation continues to operate in compliance with its tax-exempt purpose. Thus, no provision for income tax has been provided for in the financial statements. The Foundation has adopted the requirements for accounting for uncertain tax positions and management has determined that the Foundation was not required to record a liability related to uncertain tax positions as of December 31, 2022. The Foundation's annual information and income tax returns filed with the federal and state governments are subject to examination generally for three years after they are filed. All filings are current.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Children's Hospital of Philadelphia</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3402 Civic Center Blvd</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19104</ZIPCd>
        </USAddress>
        <RecipientEIN>232237932</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>332893</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>General support for the Children's Brain Tumor Network</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Seattle Childrens</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>M/S 818-F PO Box 5371</AddressLine1Txt>
          <CityNm>Seatle</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98145</ZIPCd>
        </USAddress>
        <RecipientEIN>910564748</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>50000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Tissue Navigator and tissue collection program.</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Society for Neuro-Oncology</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO Box 273296</AddressLine1Txt>
          <CityNm>Houston</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>77277</ZIPCd>
        </USAddress>
        <RecipientEIN>760499664</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>10800</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Conference Sponsorship</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Texas Children's Hospital Office of Philanthropy</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO Box 300630</AddressLine1Txt>
          <CityNm>Houston</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>77230</ZIPCd>
        </USAddress>
        <RecipientEIN>741100555</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>300000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Research grant to Dr. Michael Taylor's lab</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Prep4Gold</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>11654 Plaza America Dr</AddressLine1Txt>
          <CityNm>Reston</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>20190</ZIPCd>
        </USAddress>
        <RecipientEIN>461996362</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Symposium Sponsorship</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Weill Cornell Imaging at New York-Presbyterian</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>525 E 68th Street</AddressLine1Txt>
          <CityNm>New York</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10065</ZIPCd>
        </USAddress>
        <RecipientEIN>412237441</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>90000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GFAC Operations</PurposeOfGrantTxt>
      </RecipientTable>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>Grants are approved by the Board of Directors and recorded in the accounting records of the Organization.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Allen (Board President), Patti (Executive Director), Bridget (Board Member), and Ian Gustafson (Board Treasurer) share a family relationship.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The 990 is provided to the full Board prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization does not make its organizing documents available.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>The process has not changed from the prior year.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>