AGA and Marfan syndrome: Interestingly, some AGA specificities are associated with the GBS subtypes such as anti‐GM1 is closely related to the AMAN and GQ1b antibody are notably associated with MFS, characterized by ophthalmoplegia, ataxia, and areflexia (van Doorn & Jacobs, 2016; Mori, Kuwabara, & Yuki, 2012).