Skip to main content
Top

04-05-2024 | Neuromyelitis Optica Spectrum Disease | Original Communication

Correlation between severe attacks and serum aquaporin-4 antibody titer in neuromyelitis optica spectrum disorder

Authors: Rui Wang, Dongren Sun, Xiaofei Wang, Ziyan Shi, Lingyao Kong, Qin Du, Ying Zhang, Hongxi Chen, Wenqin Luo, Nana Zhang, Hongyu Zhou

Published in: Journal of Neurology

Login to get access

Abstract

Aquaporin 4-immunoglobulin G (AQP4-IgG) specifically targets aquaporin 4 in approximately 80% of Neuromyelitis Optica Spectrum Disorder (NMOSD) cases. NMOSD is presently categorized as anti-AQP4-antibody (Ab) positive or negative based on AQP4-Ab presence. The association between antibody titers and patient prognosis remains unclear. Therefore, the present study explores the correlation between severe attacks and serum AQP4 Ab titers in patients with neuromyelitis optica spectrum disorder. Data were gathered retrospectively from 546 patients with NMOSD between September 1, 2009, and December 1, 2021. Patients were categorized based on their AQP4-Ab titers: AQP4 titer ≥ 1:320 were classified as the high-titer group, AQP4 (+ +), and AQP4 titer of ≤ 1:100 were classified as the low-titer group, AQP4 ( +). Clinical characteristics and prognoses between the two groups were compared. Patients with AQP4 ( +) exhibited few severe optic neuritis (SON) attacks (false discovery rate [FDR] corrected p < 0.001), a reduced percentage experiencing SON attacks, and a lower incidence of visual disability than patients with AQP4 (+ +). Patients with AQP4 (+ +) and AQP4 ( +) NMOSD exhibited significant difference in annual recurrence rate (ARR) (FDR-corrected p < 0.001). The lower AQP4 Ab titer group demonstrated reduced susceptibility to severe relapse with conventional immunosuppressive agents and rituximab (RTX) than the higher titer group. No significant differences in sex, age at onset, coexisting connective tissue diseases, motor disability, or mortality rates were observed between the two groups. Higher AQP4 Ab titers correlated with increased disease severity and visual disability in patients with NMOSD.
Appendix
Available only for authorised users
Literature
Metadata
Title
Correlation between severe attacks and serum aquaporin-4 antibody titer in neuromyelitis optica spectrum disorder
Authors
Rui Wang
Dongren Sun
Xiaofei Wang
Ziyan Shi
Lingyao Kong
Qin Du
Ying Zhang
Hongxi Chen
Wenqin Luo
Nana Zhang
Hongyu Zhou
Publication date
04-05-2024
Publisher
Springer Berlin Heidelberg
Published in
Journal of Neurology
Print ISSN: 0340-5354
Electronic ISSN: 1432-1459
DOI
https://doi.org/10.1007/s00415-024-12382-5
Live Webinar | 27-06-2024 | 18:00 (CEST)

Keynote webinar | Spotlight on medication adherence

Live: Thursday 27th June 2024, 18:00-19:30 (CEST)

WHO estimates that half of all patients worldwide are non-adherent to their prescribed medication. The consequences of poor adherence can be catastrophic, on both the individual and population level.

Join our expert panel to discover why you need to understand the drivers of non-adherence in your patients, and how you can optimize medication adherence in your clinics to drastically improve patient outcomes.

Prof. Kevin Dolgin
Prof. Florian Limbourg
Prof. Anoop Chauhan
Developed by: Springer Medicine