﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2025v4.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-03-12T23:36:26-04:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>832104690</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>MOSAIC CONSULTING &amp; TAX PC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>9115 SW OLESON RD STE 308</AddressLine1Txt>
        <CityNm>PORTLAND</CityNm>
        <StateAbbreviationCd>OR</StateAbbreviationCd>
        <ZIPCd>97223</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>813752344</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>INTL AUTOIMMUNE ENCEPHALITIS SOCIET</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>INTL</BusinessNameControlTxt>
      <PhoneNum>5035166560</PhoneNum>
      <USAddress>
        <AddressLine1Txt>8420 SW PARKVIEW LOOP</AddressLine1Txt>
        <CityNm>BEAVERTON</CityNm>
        <StateAbbreviationCd>OR</StateAbbreviationCd>
        <ZIPCd>97008</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>TABITHA A ORTH</PersonNm>
      <PersonTitleTxt>EXEC. DIR./FOUNDER</PersonTitleTxt>
      <PhoneNum>5035166560</PhoneNum>
      <SignatureDt>2026-03-11</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>KEVIN L OHANESIAN</PreparerPersonNm>
      <PTIN>P00359881</PTIN>
      <PhoneNum>9717132261</PhoneNum>
      <PreparationDt>2026-03-11</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="RetDoc1" referenceDocumentId="RetDoc2">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.AUTOIMMUNE-ENCEPHALITIS.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc3">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>35129</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>17832</ContributionsGiftsGrantsEtcAmt>
      <InvestmentIncomeAmt>17297</InvestmentIncomeAmt>
      <TotalRevenueAmt>35129</TotalRevenueAmt>
      <OtherExpensesTotalAmt>80683</OtherExpensesTotalAmt>
      <TotalExpensesAmt>80683</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-45554</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>185816</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>140262</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>184886</BOYAmt>
        <EOYAmt>139332</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>930</BOYAmt>
        <EOYAmt>930</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>185816</BOYAmt>
        <EOYAmt>140262</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>185816</BOYAmt>
        <EOYAmt>140262</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>EDUCATE &amp; ASSIST WITH DIAGNOSIS &amp; TREATMENT</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>EDUCATE &amp; ASSIST WITH DIAGNOSIS &amp; TREATMENT</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>80683</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>80683</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>TABITHA A ORTH</PersonNm>
        <TitleTxt>EXEC. DIR./F</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>50.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KAREN LUBBEN</PersonNm>
        <TitleTxt>TREASUER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARI WAGNER DAVIS</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>40.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MITCHELL GORE</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>30.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JERI GORE</PersonNm>
        <TitleTxt>EDITOR IN CH</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>RYANN HENN-HAWTHORNE</PersonNm>
        <TitleTxt>DIR AT LARGE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>20.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRUNA DE FREITAS DIAZ</PersonNm>
        <TitleTxt>DIR AT LARGE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>TABITHA A ORTH</PersonNm>
        <USAddress>
          <AddressLine1Txt>8420 SW PARKWAY LOOP</AddressLine1Txt>
          <CityNm>BEAVERTON</CityNm>
          <StateAbbreviationCd>OR</StateAbbreviationCd>
          <ZIPCd>97008</ZIPCd>
        </USAddress>
        <PhoneNum>5035166560</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>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc3">
      <TestPublicSafetyInd>X</TestPublicSafetyInd>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES ADVERTISING &amp; PROMOTION 1,585 BANK SERVICE CHARGES 33 DUES &amp; SUBSCRIPTIONS 2,341 MERCHANT SERVICES 125 OFFICE EXPENSES 9,994 POSTAGE &amp; DELIVERY 59 PROFESSIONAL FEES 47,907 TRAVEL 6,401 WEBSITE 12,238 TOTAL 80,683</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>EQUIPMENT 930 930 TOTAL 930 930</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>