﻿<?xml version="1.0" encoding="utf-8"?>
<Return returnVersion="2023v6.0" xmlns="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-04-17T18:27:18Z</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>431871840</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>HRB TAX GROUP INC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1301 MAIN ST STE 101B</AddressLine1Txt>
        <CityNm>KANSAS CITY</CityNm>
        <StateAbbreviationCd>MO</StateAbbreviationCd>
        <ZIPCd>64105</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>454798068</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>TESTICULAR CANCER COMMONS</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>TEST</BusinessNameControlTxt>
      <PhoneNum>5039978632</PhoneNum>
      <USAddress>
        <AddressLine1Txt>10850 NW JACKSON QUARRY RD</AddressLine1Txt>
        <CityNm>Hillsboro</CityNm>
        <StateAbbreviationCd>OR</StateAbbreviationCd>
        <ZIPCd>97124</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>CRAIG R NICHOLS</PersonNm>
      <PersonTitleTxt>CEO FOUNDER DIRECTOR</PersonTitleTxt>
      <PhoneNum>5039978632</PhoneNum>
      <SignatureDt>2024-04-05</SignatureDt>
      <DiscussWithPaidPreparerInd>false</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>Ellis Fowler</PreparerPersonNm>
      <PTIN>P00031941</PTIN>
      <PhoneNum>8004725625</PhoneNum>
      <PreparationDt>2025-04-17</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="3" referenceDocumentId="2">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>HTTP://TESTICULARCANCERCOMMONS.ORG/</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="1">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>22569</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>19389</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>3180</ProgramServiceRevenueAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <TotalRevenueAmt>22569</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>5216</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>18366</OccupancyRentUtltsAndMaintAmt>
      <OtherExpensesTotalAmt>60</OtherExpensesTotalAmt>
      <TotalExpensesAmt>23642</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-1073</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>9329</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>8256</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>9329</BOYAmt>
        <EOYAmt>8256</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>9329</BOYAmt>
        <EOYAmt>8256</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>9329</BOYAmt>
        <EOYAmt>8256</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>SCIENTIFIC CONTRIBUTIONS TO TESTICULAR CANCER KNOWLEDGE BASE IN THE FORM OF SCIENTIFIC COLLABORATIONS, INITIATE AND FACILITATE PROJECTS AND PUBLICATIONS, LEAD OR CO-LEAD SCIENTIFIC PROJECTS FOR PUBLICATION AND PRESENTATION TO PEERS</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>None</DescriptionProgramSrvcAccomTxt>
      </ProgramSrvcAccomplishmentGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CRAIG R NICHOLS MD</PersonNm>
        <TitleTxt>CEO FOUNDER DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRANDON HAYES LATTIN MD</PersonNm>
        <TitleTxt>SCIENTIFIC DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CHRISTIAN KOLLMANNSBERGER MD</PersonNm>
        <TitleTxt>SCIENTIFIC DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DANE NICHOLS MD</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CHARLES LOPEZ MD</PersonNm>
        <TitleTxt>SCIENTIFIC DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>CRAIG R NICHOLS</PersonNm>
        <USAddress>
          <AddressLine1Txt>1210 FARRINGTON DR</AddressLine1Txt>
          <CityNm>Knoxville</CityNm>
          <StateAbbreviationCd>TN</StateAbbreviationCd>
          <ZIPCd>37923</ZIPCd>
        </USAddress>
        <PhoneNum>5039978632</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
    </IRS990EZ>
    <IRS990ScheduleA documentId="1">
      <MedicalResearchOrganizationInd>X</MedicalResearchOrganizationInd>
      <HospitalNameAndAddressGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>OHSU</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <CityNm>PORTLAND</CityNm>
        <StateAbbreviationCd>OR</StateAbbreviationCd>
      </HospitalNameAndAddressGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE</FormAndLineReferenceDesc>
        <ExplanationTxt>DONNER DIRECTED CONTRIBUTION FROM EARL E AND PHYLLIS G NICHOLS TRUST</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE CHANGES</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR TO PANDEMIC, TESTICULAR CANCER COMMONS (TCC) WAS ABLE TO ACCRUE RAINY DAY FUND THROUGH ACCUMULATION FOR DIRECT COST FROM 2 RESOURCES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. NICHOLS WAS ELECTED AS TREASURE AND A MEMBER OF THE EXECUTIVE COMMITTEE OF THE AMERICAN SOCIETY OF CLINICAL ONCOLOGY (ASCO)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART1 LINE 1 REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>AS PARTICAL COMPENSATION FOR HIS SERVICE, ASCO GAVE ANNUAL GRANTS TO TCC AVERAGING $50K TO $60K ANNUALLY</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART1 LINE REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>TCC ACCURED INDIRECT COST AND PASSED SOME THROUGH TO DR NICHOLS AS MONETARY COMPENSATION FOR THE SIGINIFICANT TIME COMMITMENT AWAY FROM TCC, HIS PRIMARY INSTITUTION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENURE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>FOR SOME YEARS, TCC WAS ABLE TO RUN POSITIVE BALANCE THROUGH THE ASCO. DONATION AND INDIRECT COSTSACCRUAL FROM FEDERAL SCIENTIFIC GRANTS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>NDEMIC</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>WITH THE PANDEMIC AND SIGNIFICANT DECLINING REVENUE, TCC WAS FORCED TO PIVOT TO AN ADMISTRATIVE ONLY TELEHELTH MODEL OF BUSINESS WHICH FULLY TRANSPIRED BY THE END OF 2022</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 LINE 1 REVENUE CHANGE</FormAndLineReferenceDesc>
        <ExplanationTxt>IN 2021, TESTICULAR CANCER COMMOMS RELOCATED TO KNOXVILLE TN FOR PROXIMITY TO UNIFORMED SERVICE UNIVERSITY AND VANDERBILT UNIVERSITY. CIRCUMSTAXCES CHANGED IN EARLY 2024. NECESITATING A MOVE BACK TO PORTLAND OREGON</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 REVENUE CHANGE CONTINUED</FormAndLineReferenceDesc>
        <ExplanationTxt>TCC FULLY INVESTED AND CONTINUES UTILIZING TELETHELTH AND SOCAIL MEDIA CAPACITIES TO ACCOMPLISH THE MISSION OF DISSEMINATION OF KNOWLEDGE FOR TESTICULAR CANCER. THIS IS CULMUNATING IN THE INTERIM AYAYSIS OF THE FEDERALLY SPONSORED NORTH AMERICAN CLINICAL TRIAL OF A NEW BIOMARKER IN TESTICULAR CANCER. TCC AND DR. NICHOLS ARE PRINCIPLALS IN THIS US/CANDIAN EFFORTT</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1</FormAndLineReferenceDesc>
        <ExplanationTxt>BEGINING IN 2023 AND LIKELY CONTINUING FOR THE FORESEEABLE FUTURE, TCC WILL OPERATE ON A BUDGET OF ABOUT $20000/YEAR WITH NO COMPENSATION FOR DR.NICHOLS OR OTHER OFFICERS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1 REVENUE CHANGE CONTINUE</FormAndLineReferenceDesc>
        <ExplanationTxt>IN KEEPING THE FULL TELEHELTH MODEL, EXPENSE ARE CONFIND IN OFFICE SPACE, COMPUTER, ROUTERS, PRINTERS, SUBSCRIPTIONS, PHONES, ADOBE, OFFICE, QUICKBOOKS, JOURNALS, BUSINESS INTERNET, NETWORK SOFTWARE, SECURITY SOFTWARE, AND SOME TRAVEL TO BRITISH COLUMBIA, WASHINGTON DC AND SEATTLE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>