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Despite the strong association of anti-GM1 antibodies in campylobacter infection and subsequent Guillain-Barr\u00e9 syndrome, this is the first reported case of brainstem encephalitis secondary to campylobacter infection demonstrating positive antiganglioside IgG GM1 serology.<\/jats:p>","DOI":"10.1136\/bcr-2025-268852","type":"journal-article","created":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T14:55:41Z","timestamp":1770216941000},"page":"e268852","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Anti-GM1 antibodies in Bickerstaff\u2019s brainstem encephalitis"],"prefix":"10.1136","volume":"19","author":[{"given":"Claire","family":"Hall","sequence":"first","affiliation":[{"name":"General Medicine, Chelsea and Westminster Hospital NHS Foundation Trust, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Milan","family":"Hargovan-Lalloo","sequence":"additional","affiliation":[{"name":"Neurology, Charing Cross Hospital, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eleanor","family":"Taylor","sequence":"additional","affiliation":[{"name":"Radiology, Charing Cross Hospital, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicholas","family":"Davies","sequence":"additional","affiliation":[{"name":"Neurology, Chelsea and Westminster Hospital NHS Foundation Trust, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2026,2,4]]},"reference":[{"key":"2026020406552888000_19.2.e268852.1","doi-asserted-by":"crossref","DOI":"10.1212\/NXI.0000000000000889","article-title":"Bickerstaff brainstem encephalitis with or without anti-GQ1b 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