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Lookup NU author(s): Professor Jordi Diaz Manera
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2019, The Author(s). Antibodies against myelin-associated glycoprotein (MAG) almost invariably appear in the context of an IgM monoclonal gammopathy associated neuropathy. Very few cases of anti-MAG neuropathy lacking IgM-monoclonal gammopathy have been reported. We investigated the presence of anti-MAG antibodies in 69 patients fulfilling diagnostic criteria for CIDP. Anti-MAG antibodies were tested by ELISA and confirmed by immunohistochemistry. We identified four (5.8%) anti-MAG positive patients without detectable IgM-monoclonal gammopathy. In two of them, IgM-monoclonal gammopathy was detected at 3 and 4-year follow-up coinciding with an increase in anti-MAG antibodies titers. In conclusion, anti-MAG antibody testing should be considered in chronic demyelinating neuropathies, even if IgM-monoclonal gammopathy is not detectable.
Author(s): Pascual-Goni E, Martin-Aguilar L, Lleixa C, Martinez-Martinez L, Simon-Talero MJ, Diaz-Manera J, Cortes-Vicente E, Rojas-Garcia R, Moga E, Juarez C, Illa I, Querol L
Publication type: Article
Publication status: Published
Journal: Scientific Reports
Online publication date: 16/04/2019
Acceptance date: 02/04/2019
Date deposited: 27/02/2020
ISSN (electronic): 2045-2322
Publisher: Nature Publishing Group
PubMed id: 30992531
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