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Lookup NU author(s): Professor Jordi Diaz ManeraORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2017 The Author(s). Background: The aim of the research is to study the human leukocyte antigen (HLA) class II allele frequencies in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) associated with anti-neurofascin 155 (NF155) antibodies. Methods: Thirteen anti-NF155+ and 35 anti-NF155 negative (anti-NF155neg) CIDP patients were included in a case-control study. The frequencies of the DRB1 HLA allele were analyzed in all patients while DQ frequencies were only studied in patients sharing the DRB1*15 allele. In silico HLA-peptide binding and NF155 antigenicity, predictions were performed to analyze overlap between presented peptides and antigenic regions. Results: DRB1*15 alleles (DRB1*15:01 and DRB1*15:02) were present in 10 out of 13 anti-NF155+ CIDP patients and in only 5 out of 35 anti-NF155neg CIDP patients (77 vs 14%; OR = 20, CI = 4.035 to 99.13). DRB1*15 alleles appeared also in significantly higher proportions in anti-NF155+ CIDP than in normal population (77 vs 17%; OR = 16.9, CI = 4.434 to 57.30). Seven anti-NF155+ CIDP patients (53%) and 5 anti-NF155neg CIDP patients had the DRB1*15:01 allele (OR = 7, p = 0.009), while 3 anti-NF155+ CIDP patients and none of the anti-NF155neg CIDP patients had the DRB1*15:02 allele (OR = 23.6, p = 0.016). In silico analysis of the NF155 peptides binding to DRB1*15 alleles showed significant overlap in the peptides presented by the 15:01 and 15:02 alleles, suggesting functional homology. Conclusions: DRB1*15 alleles are the first strong risk factor associated to a CIDP subset, providing additional evidence that anti-NF155+ CIDP patients constitute a differentiated disease within the CIDP syndrome.
Author(s): Martinez-Martinez L, Lleixa MC, Boera-Carnicero G, Cortese A, Devaux J, Siles A, Rajabally Y, Martinez-Pineiro A, Carvajal A, Pardo J, Delmont E, Attarian S, Diaz-Manera J, Callegari I, Marchioni E, Franciotta D, Benedetti L, Lauria G, de la Calle Martin O, Juarez C, Illa I, Querol L
Publication type: Article
Publication status: Published
Journal: Journal of Neuroinflammation
Online publication date: 16/11/2017
Acceptance date: 06/11/2017
Date deposited: 27/02/2020
ISSN (electronic): 1742-2094
Publisher: BioMed Central Ltd
PubMed id: 29145880
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