Abstract
This observational study explored coexisting organ-specific and non-organ-specific autoantibodies in Neuromyelitis optica spectrum disorder(NMOSD) and Myelin oligodendrocyte glycoprotein-IgG-1(MOG-IgG1) associated central nervous system demyelination(MOGAD) in a South Asian cohort from March 2017–2023. Of the 250 cases, 148 were MOGAD(82pediatric) and 102 were NMOSD(15 pediatric). 17.6 % tested positive for ≥1 antibody, with NMOSD showing a higher positivity rate (25.5 %) than MOGAD(12.2 %,p = 0.011). Double antibody positivity occurred more in NMOSD (5.9 %vs.MOGAD,1.4 %,p = 0.045). Three NMOSD cases had Sjogren syndrome with higher Anti-Ro-52 prevalence(12.7 %vs.4.1 %,p = 0.014). NMOSD patients with ≥1 antibody positivity had more constitutional symptoms (45.5 %vs.23.1 %,p = 0.045). Significant associations were found between NMOSD and female gender, having ≥1 antibody-positive status, and testing positive for Anti-Ro-52 and SS-A antibodies (p < 0.05).
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