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The aim of this study was to identify novel antigens for <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> and investigate their prognostic potential to predict conversion to multiple sclerosis (<jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content>). We applied serological antigen selection (<jats:styled-content style=\"fixed-case\">SAS<\/jats:styled-content>) to identify antigens interacting with antibodies present in the pooled <jats:styled-content style=\"fixed-case\">CSF<\/jats:styled-content> from four <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> patients, who developed <jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content>. Antibody reactivity towards <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> antigens identified by <jats:styled-content style=\"fixed-case\">SAS<\/jats:styled-content> was tested in <jats:styled-content style=\"fixed-case\">CSF<\/jats:styled-content> and serum from patients with <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> (<jats:italic>n\u00a0<\/jats:italic>=\u00a0123\/<jats:italic>n\u00a0<\/jats:italic>=\u00a0108), <jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content> (<jats:italic>n\u00a0<\/jats:italic>=\u00a065\/<jats:italic>n\u00a0<\/jats:italic>=\u00a044), and other (inflammatory) neurological diseases (<jats:italic>n\u00a0<\/jats:italic>=\u00a075\/<jats:italic>n\u00a0<\/jats:italic>=\u00a038) as well as in healthy control sera (<jats:italic>n\u00a0<\/jats:italic>=\u00a044). Using <jats:styled-content style=\"fixed-case\">SAS<\/jats:styled-content>, a panel of six novel <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> candidate antigens was identified. <jats:styled-content style=\"fixed-case\">CSF<\/jats:styled-content> antibody reactivity was detected in both <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> and relapsing\u2010remitting (<jats:styled-content style=\"fixed-case\">RR<\/jats:styled-content>) <jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content>. Serum reactivity was significantly increased in <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">RR<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content> as compared with controls (<jats:italic>p\u00a0<\/jats:italic>=\u00a00.03). For two antigens, the frequency of antibody\u2010positive patients was higher in <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> patients who converted to <jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content> as compared with <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> patients without conversion. We identified novel <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> antigens to which antibody reactivity was primarily detected in <jats:styled-content style=\"fixed-case\">CIS<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">RR<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content> as compared to controls. Possible prognostic potential could be demonstrated for two antigens.<\/jats:p>","DOI":"10.1111\/jnc.12005","type":"journal-article","created":{"date-parts":[[2012,9,7]],"date-time":"2012-09-07T12:32:46Z","timestamp":1347021166000},"page":"568-577","source":"Crossref","is-referenced-by-count":10,"title":["Novel cerebrospinal fluid and serum autoantibody targets for clinically isolated syndrome"],"prefix":"10.1111","volume":"123","author":[{"given":"Myrthe","family":"Rouwette","sequence":"first","affiliation":[{"name":"Hasselt University Biomedical Research Institute (BIOMED) and transnationale Universiteit Limburg School of Life Sciences Diepenbeek Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Klaartje","family":"Somers","sequence":"additional","affiliation":[{"name":"Hasselt University Biomedical Research Institute (BIOMED) and transnationale Universiteit Limburg School of Life Sciences Diepenbeek Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cindy","family":"Govarts","sequence":"additional","affiliation":[{"name":"Hasselt University Biomedical Research Institute (BIOMED) and transnationale Universiteit Limburg School of Life Sciences Diepenbeek Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter P.","family":"De Deyn","sequence":"additional","affiliation":[{"name":"Department of Neurology Middelheim Hospital Antwerp Belgium"},{"name":"Laboratory of Neurochemistry and Behaviour Department of Biomedical Sciences Institute Born Bunge University of Antwerp Antwerp Belgium"},{"name":"Department of Neurology University Medical Center Groningen Groningen The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raymond","family":"Hupperts","sequence":"additional","affiliation":[{"name":"School of Mental Health and Neuroscience Maastricht University Medical Center Maastricht the Netherlands"},{"name":"Department of Neurology Orbis Medical Center Sittard The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bart","family":"Van Wijmeersch","sequence":"additional","affiliation":[{"name":"Hasselt University Biomedical Research Institute (BIOMED) and transnationale Universiteit Limburg School of Life Sciences Diepenbeek Belgium"},{"name":"Multiple Sclerosis and Rehabilitation Center Overpelt Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brigit A.","family":"De Jong","sequence":"additional","affiliation":[{"name":"MS Centre Nijmegen (MSCN) and Department of Neurology Radboud University Medical Centre Nijmegen The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcel M.","family":"Verbeek","sequence":"additional","affiliation":[{"name":"Departments of Neurology and Laboratory Medicine Radboud University Medical Center Nijmegen The 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