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        <PersonNm>SALO ZELERMYER</PersonNm>
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        <PersonNm>TOM ROLOFF</PersonNm>
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        <PersonNm>STEVE DROWN</PersonNm>
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        <PersonNm>MICHAEL ANTONELLIS</PersonNm>
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        <CurrentYearAmt>144204</CurrentYearAmt>
        <TotalAmt>556764</TotalAmt>
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      <GrassrootsCeilingAmt>835146</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
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        <BeginningYearBalanceAmt>312104</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>3344</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>315448</EndYearBalanceAmt>
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      <CYMinus1YrEndwmtFundGrp>
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        <InvestmentEarningsOrLossesAmt>5707</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>312104</EndYearBalanceAmt>
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        <InvestmentEarningsOrLossesAmt>1387</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>306397</EndYearBalanceAmt>
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      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>300399</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>4611</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>305010</EndYearBalanceAmt>
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      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>298412</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>1987</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>300399</EndYearBalanceAmt>
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      <PrmnntEndowmentBalanceEOYPct>0.94040</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.05960</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>136109</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>133827</DepreciationAmt>
        <BookValueAmt>2282</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>198505</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>195967</DepreciationAmt>
        <BookValueAmt>2538</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>629550</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>612969</DepreciationAmt>
        <BookValueAmt>16581</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>21401</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>10430091</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>3620</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>158990</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>701622</OtherRevenueAmt>
      <RevenueNotReportedAmt>864232</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>9565859</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>2000</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>2000</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>9567859</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>9394894</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>158990</DonatedServicesUseFcltsAmt>
      <OtherExpensesIncludedAmt>701622</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>860612</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>8534282</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>2000</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>2000</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>8536282</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY HAS PERMANENTLY RESTRICTED NET ASSETS IN WHICH THE PRINCIPAL AND ANY CURRENT CONTRIBUTIONS ARE PERMANENTLY RESTRICTED. THE BALANCE AS OF DECEMBER 31, 2017 WAS INVESTED IN BOND FUNDS. INCOME AND APPRECIATION EARNED ON THE PERMANENTLY RESTRICTED NET ASSETS ARE RESTRICTED TO SUPPORT THE COSTS OF PRODUCING AND DISTRIBUTING THE ESSENTIAL GUIDE TO BRAIN TUMORS. THE INFORMATION IS UPDATED ON AN ANNUAL BASIS AND MADE AVAILABLE THROUGH THE SOCIETY'S WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION ACCOUNTS FOR UNCERTAINTY IN INCOME TAXES IN ACCORDANCE WITH ASC TOPIC, INCOME TAXES. THIS STANDARD CLARIFIES THE ACCOUNTING FOR UNCERTAINTY IN TAX POSITIONS AND PRESCRIBES A RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE CONSOLIDATED FINANCIAL STATEMENTS REGARDING A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. THE ORGANIZATION HAS DETERMINED THAT THERE ARE NO UNCERTAIN TAX POSITIONS WHICH QUALIFY FOR EITHER RECOGNITION OR DISCLOSURE IN THE CONSOLIDATED FINANCIAL STATEMENTS AT DECEMBER 31, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>DIRECT FUNDRAISING EXPENSES SHOWN NET ON STATEMENT OF REVENUE IN FORM 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>DIRECT FUNDRAISING EXPENSES SHOWN NET ON STATEMENT OF REVENUE IN FORM 990.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>GRANTS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>50000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>GRANTS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>50000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>100000</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>100000</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
        <CashGrantAmt>50000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
        <CashGrantAmt>50000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE NATIONAL BRAIN TUMOR SOCIETY (NBTS) REQUIRES, AS A CONDITION OF THE GRANT, SCIENTIFIC REVIEW, THE PRODUCTION OF SCIENTIFIC AND FINANCIAL REPORTS ON AN ANNUAL BASIS, AND REGULAR TELECONFERENCES WITH RESEARCHERS TO DETERMINE USE OF GRANT FUNDS AND PERFORMANCE.</ExplanationTxt>
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        <Event1Nm>WALK - RACE FOR HOPE -DC</Event1Nm>
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        <OtherDirectExpensesEvent1Amt>72794</OtherDirectExpensesEvent1Amt>
        <Event2Nm>WALK - RACE FOR HOPE - PHIL</Event2Nm>
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        <OtherEventsTotalCnt>29</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>4217592</GrossReceiptsOtherEventsAmt>
        <CharitableContriOtherEventsAmt>4217592</CharitableContriOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>556034</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>6111630</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>6111630</CharitableContributionsTotAmt>
        <OthDirectExpnssTotalEventsAmt>701622</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>701622</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-701622</NetIncomeSummaryAmt>
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          <BusinessNameLine1Txt>CHILDREN'S RESEARCH INSTITUTE</BusinessNameLine1Txt>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20010</ZIPCd>
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        <CashGrantAmt>73242</CashGrantAmt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>WASHINGTON UNIVERSITY</BusinessNameLine1Txt>
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          <CityNm>ST LOUIS</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
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        <RecipientEIN>430653611</RecipientEIN>
        <IRCSectionDesc>501 (C) 3</IRCSectionDesc>
        <CashGrantAmt>75000</CashGrantAmt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF TEXAS MD ANDERSON CENTER</BusinessNameLine1Txt>
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        <USAddress>
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          <CityNm>HOUSTON</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
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        <RecipientEIN>746001118</RecipientEIN>
        <IRCSectionDesc>501 (C) 3</IRCSectionDesc>
        <CashGrantAmt>525000</CashGrantAmt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>LUDWIG INST FOR CANCER RSEARCH</BusinessNameLine1Txt>
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        <USAddress>
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          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MEMORIAL SLOAN KETTERING CANCER CENTER</BusinessNameLine1Txt>
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          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ST JUDES CHILDREN'S RESEARCH HOSPITAL</BusinessNameLine1Txt>
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        <USAddress>
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          <CityNm>MEMPHIS</CityNm>
          <StateAbbreviationCd>TN</StateAbbreviationCd>
          <ZIPCd>38105</ZIPCd>
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        <IRCSectionDesc>501 (C) 3</IRCSectionDesc>
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        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UC SAN FRANSISCO</BusinessNameLine1Txt>
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          <CityNm>SAN FRANCISCO</CityNm>
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          <ZIPCd>94143</ZIPCd>
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      <RecipientTable>
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          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19104</ZIPCd>
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        <RecipientEIN>231352685</RecipientEIN>
        <IRCSectionDesc>501 (C) 3</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>DANA- FARBER CANCER INST</BusinessNameLine1Txt>
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          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
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        </USAddress>
        <RecipientEIN>042263040</RecipientEIN>
        <IRCSectionDesc>501 (C) 3</IRCSectionDesc>
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        <PurposeOfGrantTxt>RESEARCH</PurposeOfGrantTxt>
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      <Total501c3OrgCnt>12</Total501c3OrgCnt>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE NATIONAL BRAIN TUMOR SOCIETY (NBTS) REQUIRES, AS A CONDITION OF THE GRANT, SCIENTIFIC REVIEW, THE PRODUCTION OF SCIENTIFIC AND FINANCIAL REPORTS ON AN ANNUAL BASIS, AND REGULAR TELECONFERENCES WITH RESEARCHERS TO DETERMINE USE OF GRANT FUNDS AND PERFORMANCE.</ExplanationTxt>
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      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>1</SeverancePaymentInd>
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      <InitialContractExceptionInd>0</InitialContractExceptionInd>
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        <PersonNm>DAVID ARONS</PersonNm>
        <TitleTxt>CEO</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6577</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>10172</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>223472</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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        <PersonNm>WENDI NANCE</PersonNm>
        <TitleTxt>INTERIM CHIEF ADVANCEMENT OFFICER</TitleTxt>
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        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>153896</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>STEPHEN DROWN, FORMER DIRECTOR OF FINANCE, RECEIVED A SEVERANCE PAYMENT OF $18,100 DURING 2017.</ExplanationTxt>
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        <ExplanationTxt>A BOARD MEMBER IS THE CEO OF AN ORGANIZATION WHERE ANOTHER BOARD MEMBER IS EMPLOYED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
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        <ExplanationTxt>A COPY OF THE FEDERAL FORM 990 IS EMAILED TO THE FULL BOARD OF DIRECTORS FOR REVIEW AND COMMENT PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD REQUIRES THAT ALL MEMBERS CONDUCT AN ANNUAL REVIEW FOR ANY CONFLICTS OF INTEREST AND SHOULD ANY ARISE, THAT THEY BE DISCLOSED TO THE BOARD AND MANAGEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE COMMITTEE OF THE BOARD DETERMINES THE CEO'S SALARY. COMPARABILITY FIGURES REPRESENTING COMPARABLE POSITIONS, SCOPE OF RESPONSIBILITY, SIZE OF ORGANIZATION AND BUDGET AND SIMILAR INDUSTRY WERE PROVIDED TO THE EXECUTIVE COMMITTEE. IN REGARD TO OTHER OFFICERS AND KEY EMPLOYEES, THE HR MANAGER REVIEWS COMPARABLE DATA FOR JOB RESPONSIBILITIES AND REVIEWS WITH THE CEO TO VERIFY COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCIAL STATEMENTS ARE AVAILABLE ON THE SOCIETY'S WEBSITE. ALL OTHER DOCUMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCE COMMITTEE IS RESPONSIBLE FOR OVERSIGHT AND SELECTION OF THE INDEPENDENT AUDITOR</ExplanationTxt>
      </SupplementalInformationDetail>
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          <CityNm>NEWTON</CityNm>
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        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NATIONAL BRAIN TUMOR SOCIETY INC</BusinessNameLine1Txt>
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