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      <PublicSupportPY509Pct>0.49850</PublicSupportPY509Pct>
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      <InvestmentIncomePYPct>0.02760</InvestmentIncomePYPct>
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    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
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        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
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          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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      <TotalDirectLobbyingGrp>
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        <CurrentYearMinus2Amt>1000000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>1000000</CurrentYearMinus1Amt>
        <CurrentYearAmt>1000000</CurrentYearAmt>
        <TotalAmt>4000000</TotalAmt>
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        <CurrentYearMinus2Amt>292420</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>297168</CurrentYearMinus1Amt>
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        <CurrentYearMinus2Amt>250000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>250000</CurrentYearMinus1Amt>
        <CurrentYearAmt>250000</CurrentYearAmt>
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      <AvgGrassrootsLobbyingExpendGrp>
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        <CurrentYearMinus2Amt>116968</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>118867</CurrentYearMinus1Amt>
        <CurrentYearAmt>117473</CurrentYearAmt>
        <TotalAmt>449830</TotalAmt>
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      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>794480</BeginningYearBalanceAmt>
        <ContributionsAmt>778000</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>58723</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>36000</OtherExpendituresAmt>
        <EndYearBalanceAmt>1595203</EndYearBalanceAmt>
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      <CYMinus1YrEndwmtFundGrp>
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        <ContributionsAmt>363000</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-10433</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>794480</EndYearBalanceAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedFinclStmtAmt>45344791</RevenueNotReportedFinclStmtAmt>
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      <ExpensesNotRptFinclStmtAmt>45344791</ExpensesNotRptFinclStmtAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INCOME FROM THE FUNDS IS USED FOR EDUCATIONAL SESSIONS AT THE AACR ANNUAL MEETING AND OTHER PURPOSES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNCERTAIN TAX POSITIONS UNDER ASC 740 GAAP PRESCRIBES A MINIMUM RECOGNITION THRESHOLD THAT A TAX POSITION IS REQUIRED TO MEET IN ORDER TO BE RECOGNIZED IN THE FINANCIAL STATEMENTS. AACR BELIEVES THAT THEY HAD NO UNCERTAIN TAX POSITIONS AS DEFINED IN GAAP.</ExplanationTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>REVENUE OF AFFILIATES 49,013,351.</ExplanationTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>INTERCOMPANY REVENUE 45,344,791.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES OF AFFILIATES 47,995,568.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INTERCOMPANY EXPENSES 45,344,791.</ExplanationTxt>
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        <ExplanationTxt>PROCESS FOR DETERMINING COMPENSATION INDEPENDENT DATA DETAILING COMPARABLE COMPENSATION IS PURCHASED ANNUALLY AND PROVIDED TO A COMPENSATION COMMITTEE WHICH EVALUATES SALARY LEVELS IN COMPARISON TO PEER GROUPS.</ExplanationTxt>
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        <ExplanationTxt>PUBLIC AVAILABILITY OF OTHER DOCUMENTS THE FINANCIAL STATEMENTS AND FORM 990 ARE POSTED ON THE ORGANIZATION'S WEBSITE (WWW.AACR.ORG). THEY WILL BE PROVIDED ON REQUEST, AND ARE ALSO AVAILABLE FOR INSPECTION AT THE ORGANIZATION'S OFFICE.</ExplanationTxt>
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        <ExplanationTxt>CHANGE IN INTEREST IN NET ASSETS OF AFFILIATE-UNRESTRICTED 133,998. CHANGE IN INTEREST IN NET ASSETS OF AFFILIATE-TEMP. RESTRICTED 30,000. CHANGE IN INTEREST IN NET ASSETS OF AFFILIATE-PERM. RESTRICTED 800,723.</ExplanationTxt>
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      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AMERICAN ASSOCIATION FOR CANCER RESEARCH FOUNDATION (SUPPORTING ORG)</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>C</TransactionTypeTxt>
        <InvolvedAmt>43884791</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACCRUAL METHOD</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AMERICAN ASSOCIATION FOR CANCER RESEARCH FOUNDATION (SUPPORTING ORG)</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>R</TransactionTypeTxt>
        <InvolvedAmt>1460000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACCRUAL METHOD</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>