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      <LandBldgEquipAccumDeprecAmt>63004</LandBldgEquipAccumDeprecAmt>
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        <BOYAmt>465497</BOYAmt>
        <EOYAmt>512546</EOYAmt>
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      <OtherAssetsTotalGrp>
        <BOYAmt>4827</BOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>1077866</BOYAmt>
        <EOYAmt>1040564</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>22788</BOYAmt>
        <EOYAmt>25177</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>22788</BOYAmt>
        <EOYAmt>25177</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>422951</BOYAmt>
        <EOYAmt>292518</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>632127</BOYAmt>
        <EOYAmt>722869</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>1055078</BOYAmt>
        <EOYAmt>1015387</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>1077866</BOYAmt>
        <EOYAmt>1040564</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-86741</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>47050</NetUnrlzdGainsLossesInvstAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="RetDoc5">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>755712</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>178970</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>284894</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>566950</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>237769</CurrentTaxYearAmt>
        <TotalAmt>2024295</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>755712</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>178970</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>284894</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>566950</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>237769</CurrentTaxYearAmt>
        <TotalAmt>2024295</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>2024295</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>277</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>247</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>21616</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>40340</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>43706</CurrentTaxYearAmt>
        <TotalAmt>106186</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>2130481</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>1189411</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.95020</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.97090</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
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    <IRS990ScheduleD documentId="RetDoc2">
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>63004</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>63004</DepreciationAmt>
      </OtherLandBuildingsGrp>
      <TotalRevEtcAuditedFinclStmtAmt>416574</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>416574</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>416574</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>503315</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>503315</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>503315</TotalExpensesPerForm990Amt>
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    <IRS990ScheduleG documentId="RetDoc3">
      <FundraisingEventInformationGrp>
        <Event1Nm>EVENTS</Event1Nm>
        <GrossReceiptsEvent1Amt>262065</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>262065</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>126966</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>262065</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>262065</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>126966</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>126966</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>135099</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc4">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>TO IMPROVE THE QUALITY OF LIFE TODAY FOR PEOPLE AFFECTED BY MITOCHONDRIAL DISEASE THROUGH SUPPORT, EDUCATION, EMPOWERMENT, AND ADVOCACY INITIATIVES AND TO ENGAGE THE COMMUNITY FOR BETTER CARE AND AWARENESS ABOUT THE DISEASE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR REVIEWS AND SIGNS THE FORM 990 BEFORE IT IS FILED. ADDITIONALLY, THE EXECUTIVE DIRECTOR FORWARDS A PDF VERSION OF THE FORM 990 TO THE GOVERNING BOARD PRIOR TO FILING AND THE FORM 990 IS DISCUSSED BY THE GOVERNING BOARD AT THE NEXT MOST OPPORTUNE BOARD MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD IS REQUIRED TO ANNUALLY REVIEW AND SIGN THE CONFLICT OF INTEREST POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PRESIDENT OF MITOACTION PERFORMED THE REVIEW AND SALARY ANALYSIS OF THE EXECUTIVE DIRECTOR BASED ON EDUCATION, EXPERIENCE, AND COMPARABILITY DATA. COMPENSATION FOR THE EXECUTIVE DIRECTOR WAS DETERMINED BY THE INDEPENDENT BOARD OF DIRECTORS BASED ON THIS COMPARABILITY INFORMATION TO DETERMINE FAIR COMPENSATION FOR THIS POSITION. THE EXECUTIVE DIRECTOR'S PERFORMANCE AND SALARY WAS DISCUSSED AND APPROVED AT ONE OF THE BOARD OF DIRECTOR MEETINGS IN WHICH THE EXECUTIVE DIRECTOR WAS NOT IN ATTENDANCE AND IS DOCUMENTED IN THE MINUTES OF THAT MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>SAME AS 15A.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION PROVIDES ACCCESS TO THE FORM 990 ON ITS WEBSITE. FINANCIAL STATEMENTS, FORM 990 AND MASSACHUSETTS FORM PC ARE AVAILABLE ON THE MASSACHUSETTS ATTORNEY GENERAL'S WEBSITE. ALL OTHER INFORMATION IS AVAILABLE UPON WRITTEN REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>PROFESSIONAL FEES 13,069 8,125 0 PROFESSIONAL FEES 1,634 0 0 PROFESSIONAL FEES 1,634 0 0 CONTRACTORS 61,058 16,140 18,391 CONTRACTORS 7,632 0 0 CONTRACTORS 7,632 0 0 PAYROLL SERVICE FEES 1,059 280 319 PAYROLL SERVICE FEES 133 0 0 PAYROLL SERVICE FEES 133 0 0 TOTAL 93,984 24,545 18,710</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>