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    <citation>
      <titlStmt>
        <titl xml:lang="sv">Antikroppsnivåer mot Epstein Barr-virusantigen och molekylära sekvenshomologa proteinter hos patienter med multipel skleros och kontroller</titl>
        <parTitl xml:lang="en">Antibody levels towards Epstein Barr virus antigens and molecular mimics in multiple sclerosis patients and controls</parTitl>
        <IDNo agency="SND">2025-21-1</IDNo>
        <IDNo agency="DOI">https://doi.org/10.48723/0xhc-vp63</IDNo>
      </titlStmt>
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        <producer xml:lang="en" abbr="SND">Swedish National Data Service</producer>
        <producer xml:lang="sv" abbr="SND">Svensk nationell datatjänst</producer>
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      <holdings URI="https://doi.org/10.48723/0xhc-vp63">Landing page</holdings>
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    <citation>
      <titlStmt>
        <titl xml:lang="sv">Antikroppsnivåer mot Epstein Barr-virusantigen och molekylära sekvenshomologa proteinter hos patienter med multipel skleros och kontroller</titl>
        <parTitl xml:lang="en">Antibody levels towards Epstein Barr virus antigens and molecular mimics in multiple sclerosis patients and controls</parTitl>
        <IDNo agency="SND">2025-21-1</IDNo>
        <IDNo agency="DOI">https://doi.org/10.48723/0xhc-vp63</IDNo>
        <IDNo agency="SwePub">oai:swepub.ki.se:911911</IDNo>
        <IDNo agency="DOI">10.1073/pnas.2424986122</IDNo>
      </titlStmt>
      <rspStmt>
        <AuthEnty xml:lang="en" affiliation="Department of Clinical Neuroscience, Karolinska Institutet">Skelton Kockum, Ingrid</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för klinisk neurovetenskap, Karolinska Institutet">Skelton Kockum, Ingrid</AuthEnty>
      </rspStmt>
      <prodStmt>
        <grantNo xml:lang="en" agency="Swedish Research Council">2022-00565_VR</grantNo>
        <grantNo xml:lang="sv" agency="Vetenskapsrådet">2022-00565_VR</grantNo>
      </prodStmt>
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        <distrbtr xml:lang="en" abbr="SND" URI="https://snd.se">Swedish National Data Service</distrbtr>
        <distrbtr xml:lang="sv" abbr="SND" URI="https://snd.se">Svensk nationell datatjänst</distrbtr>
        <distDate xml:lang="en" date="2025-02-12" />
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      </verStmt>
      <holdings URI="https://doi.org/10.48723/0xhc-vp63">Landing page</holdings>
    </citation>
    <stdyInfo>
      <subject>
        <keyword xml:lang="en" vocab="MeSH" vocabURI="http://id.nlm.nih.gov/mesh/D020529">Multiple Sclerosis, Relapsing-Remitting</keyword>
        <keyword xml:lang="sv" vocab="MeSH" vocabURI="http://id.nlm.nih.gov/mesh/D020529">Remitterande multipel skleros</keyword>
        <keyword xml:lang="en" vocab="ICD-10" vocabURI="https://icd.who.int/browse10/2019/en#/G35">Multiple sclerosis</keyword>
        <keyword xml:lang="sv" vocab="ICD-10" vocabURI="https://icd.who.int/browse10/2019/en#/G35">Multipel skleros</keyword>
        <topcClas xml:lang="en" vocab="CESSDA Topic Classification" vocabURI="https://vocabularies.cessda.eu/vocabulary/TopicClassification?code=Health.SpecificDiseasesDisordersAndMedicalConditions">Specific diseases, disorders and medical conditions</topcClas>
        <topcClas xml:lang="sv" vocab="CESSDA Topic Classification" vocabURI="https://vocabularies.cessda.eu/vocabulary/TopicClassification?code=Health.SpecificDiseasesDisordersAndMedicalConditions">Specifika sjukdomar, störningar och medicinska tillstånd</topcClas>
      </subject>
      <abstract xml:lang="en" contentType="abstract">This data was generated using plasma samples from the EIMS study (1). The overall goal of the EIMS study is to understand which lifestyle and genetic factors influence MS risk. The aim of this sub-study was to better understand how epstein barr virus can affect the onset of autoimmune reactions. The study includes data from 661 population based controls and 650 multiple sclerosis patients from Sweden. The data consists of antibody levels estimated using fluorescence-activated bead-based assay. Samples were run in duplicate. The levels were adjusted between plates using batch controlled samples. The values given are the average of the two run samples after batch correction.
HLA genotypes have been imputed from SNP genotypes in the HlA region of chromosome 6 using HLA*IMP:02 as described previously (2). 

The dataset contains of the following files:
- PNAS_Data_combined.csv (433 kB)
- MetaData.csv
- MetaDescription.docx
Details about the variables in the tables can be found in the documentation file</abstract>
      <abstract xml:lang="sv" contentType="abstract">Dessa data genererades med hjälp av plasmaprover från EIMS-studien (1). Det övergripande målet med EIMS studien är att förstå vilka livstil och genetiska faktorer som påverkar MS risk. Denna delstudies mål var att bättre förstå hur epstein barr virus kan påverka uppkomst av autoimmuna reaktioner. Studien inkluderar data från 661 populationsbaserade kontroller och 650 multipel sklerospatienter från Sverige. Datan består av antikroppsnivåer mätta med fluorescensaktiverad pärlbaserad analys. Prover kördes i duplikat. Nivåerna justerades mellan plattorna med användning av batchkontrollprover. De angivna värdena är medelvärdet av de två körningarna efter batchkorrigering.
HLA-genotyper har imputerats från SNP-genotyper i HlA-regionen av kromosom 6 med hjälp av HLA*IMP:02 som beskrivits tidigare (2).

Datasetet består av följande filer:
- PNAS_Data_combined.csv (433 kB)
- MetaData.csv
- MetaDescription.docx
Mer information om variablerna i tabellerna finns i dokumentationsfilen.</abstract>
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        <nation xml:lang="en" abbr="SE">Sweden</nation>
        <nation xml:lang="sv" abbr="SE">Sverige</nation>
        <anlyUnit xml:lang="en" unit="Individual">Individual<concept vocab="DDI Analysis Unit" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/AnalysisUnit/2.1.3?languageVersion=en-2.1.3">Individual</concept></anlyUnit>
        <anlyUnit xml:lang="sv" unit="Individ">Individ<concept vocab="DDI Analysis Unit" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/AnalysisUnit/2.1.3?languageVersion=sv-2.1.3">Individ</concept></anlyUnit>
        <universe xml:lang="en">Patients with multiple sclerosis in Sweden who have given their consent to participate in the EIMS study and population-based controls. We have analyzed plasma from blood samples from these individuals for levels of antibodies directed against the Epstein Barr Virus antigen as well as human proteins with amino acid homologies to the EBNA1 protein</universe>
        <universe xml:lang="sv">Patienter med multipel skleros i Sverige som gett sitt godkännande till att delta i EIMS studien samt populations baserade kontroller. Vi har analyserat plasma från blodprover från dessa individer för nivåer av antikroppar riktade mot Epstein Barr Virus antigen samt humana proteiner med aminosyra homologier med EBNA1 proteinet</universe>
        <dataKind xml:lang="en">Numeric</dataKind>
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        <timeMeth xml:lang="en">Cross-section<concept vocab="DDI Time Method" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/TimeMethod/1.2.3?languageVersion=en-1.2.3">Cross-section</concept></timeMeth>
        <timeMeth xml:lang="sv">Tvärsnitt<concept vocab="DDI Time Method" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/TimeMethod/1.2.3?languageVersion=sv-1.2.3">Tvärsnitt</concept></timeMeth>
        <sampProc xml:lang="en">Newly diagnosed MS patients identified via neurology clinics in Sweden were invited to participate in the study, which consisted of answering a questionnaire and providing a blood sample. Age, gender and region matched controls have been invited to participate in the study, they have also answered a questionnaire and provided blood samples.<concept vocab="DDI Sampling Procedure" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/SamplingProcedure/2.0.1?languageVersion=en-2.0.1">Newly diagnosed MS patients identified via neurology clinics in Sweden were invited to participate in the study, which consisted of answering a questionnaire and providing a blood sample. Age, gender and region matched controls have been invited to participate in the study, they have also answered a questionnaire and provided blood samples.</concept></sampProc>
        <sampProc xml:lang="sv">Ny diagnosticerade MS patienter identiferade via neurologkliniker i sverige har bjudits in att delta i studien som bestått av att svara på en enkät samt att lämna blodprov. Ålders, köns och region matchade kontroller har bjudits in att delta i studien, även de har svarat på en enkät och lämnat blodprov.<concept vocab="DDI Sampling Procedure" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/SamplingProcedure/2.0.1?languageVersion=sv-2.0.1">Ny diagnosticerade MS patienter identiferade via neurologkliniker i sverige har bjudits in att delta i studien som bestått av att svara på en enkät samt att lämna blodprov. Ålders, köns och region matchade kontroller har bjudits in att delta i studien, även de har svarat på en enkät och lämnat blodprov.</concept></sampProc>
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        <restrctn xml:lang="en">Access to data through SND. Access to data is restricted.</restrctn>
        <restrctn xml:lang="sv">Åtkomst till data via SND. Tillgång till data är begränsad.</restrctn>
        <conditions elementVersion="info:eu-repo-Access-Terms vocabulary">restrictedAccess</conditions>
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            <titl xml:lang="sv">Sattarnezhad, N., Kockum, I., Thomas, O., Liu, Y., Ho, P., Barrett, A., Comanescu, A., Wijeratne, T., Utz, P., &amp; Alfredsson, L. (2025). Antibody reactivity against EBNA1 and GlialCAM differentiates multiple sclerosis patients from healthy controls. In PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (Vol. 122, Issue 11). https://doi.org/10.1073/pnas.2424986122</titl>
            <parTitl xml:lang="en">Sattarnezhad, N., Kockum, I., Thomas, O., Liu, Y., Ho, P., Barrett, A., Comanescu, A., Wijeratne, T., Utz, P., &amp; Alfredsson, L. (2025). Antibody reactivity against EBNA1 and GlialCAM differentiates multiple sclerosis patients from healthy controls. In PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (Vol. 122, Issue 11). https://doi.org/10.1073/pnas.2424986122</parTitl>
            <IDNo agency="DOI">10.1073/pnas.2424986122</IDNo>
            <IDNo agency="SWEPUB">oai:swepub.ki.se:911911</IDNo>
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            <distDate date="2025">2025</distDate>
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