Different features between pediatric-onset and adult-onset patients who are seropositive for MOG-IgG: A multicenter study in South China

Lu Chen, Chen Chen, Xiaonan Zhong, Xiaobo Sun, Haixia Zhu, Xiaojing Li, Hui Yang, Yaqing Shu, Yanyu Chang, Xueqiang Hu, Zhengqi Lu, Lisheng Peng, Wei Qiu

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47 Citations (Scopus)

Abstract

Background: Immunoglobulin against myelin oligodendrocyte glycoprotein (MOG-IgG) is a potential demyelinating disease-associated autoantibody. Whether clinical features of MOG antibody-associated demyelinating diseases change with age remains unclear. Object: To investigate the different clinical features between pediatric-onset and adult-onset MOG-IgG-seropositive patients in a relatively large cohort. Methods: A total of 816 consecutive patients with suspected demyelinating disease were prospectively enrolled from three tertiary academic centers in South China from February 2016 to December 2016. Sixteen pediatric-onset cases (≤14 years old) and 34 adult-onset cases (>14 years old) seropositive for MOG-IgG were identified. Differences in clinical features between the two groups were investigated. Results: There was a significant difference in the cumulative incidence of first relapse among the two groups (P =.008). Cerebral symptoms were significantly higher in pediatric-onset patients than in adult-onset patients, either at disease onset (pediatric-onset group, 10/16(62.5%); adult-onset group, 8/34(23.53%); P =.007) or throughout the course of disease (pediatric-onset group, 11/16(68.8%); adult-onset group, 10/34(29.4%); P =.009). Optic nerve symptoms were more common in adult-onset groups, but no significant difference was found between the two groups. A significantly higher rate of pediatric-onset patients (9/16, 56.3%) met the acute disseminated encephalomyelitis criteria compared with adult-onset patients (2/34, 5.9%) (P =.0003), and isolated optic neuritis was mainly diagnosed in adult-onset patients (pediatric-onset group, 2/16(12.5%); adult-onset group, 14/34(41.2%); P =.043). The MOG-IgG titer showed a significant positive correlation with total protein levels in cerebrospinal fluid, but only in adult-onset patients (r = 0.95; P =.0004). On magnetic resonance imaging, extensive white matter lesions were observed in both groups, and the number was much higher in pediatric-onset (7/15, 46.7%) than in adult-onset patients (4/29, 13.8%) (P =.043). At the last follow-up, more pediatric-onset patients (10/16, 62.5%) experienced complete recovery (EDSS 0.0 at last follow up) compared with adult-onset patients (9/34, 26.5%) (P =.014). Conclusions: Distinctive features are present between pediatric-onset and adult-onset patients with MOG-IgG. Further studies are required to determine the different underlying pathogenesis of MOG antibody at different ages.

Original languageEnglish
Pages (from-to)83-91
Number of pages9
JournalJournal of Neuroimmunology
Volume321
DOIs
Publication statusPublished - 15 Aug 2018
Externally publishedYes

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