Chen, JJ; Huda, S; Hacohen, Y; Levy, M; Lotan, I; Wilf-Yarkoni, A; Stiebel-Kalish, H; ... Marignier, R; + view all Chen, JJ; Huda, S; Hacohen, Y; Levy, M; Lotan, I; Wilf-Yarkoni, A; Stiebel-Kalish, H; Hellmann, MA; Sotirchos, ES; Henderson, AD; Pittock, SJ; Bhatti, MT; Eggenberger, ER; Di Nome, M; Kim, HJ; Kim, SH; Saiz, A; Paul, F; Dale, RC; Ramanathan, S; Palace, J; Camera, V; Leite, MI; Lam, BL; Bennett, JL; Mariotto, S; Hodge, D; Audoin, B; Maillart, E; Deschamps, R; Pique, J; Flanagan, EP; Marignier, R; - view fewer (2022) Association of Maintenance Intravenous Immunoglobulin with Prevention of Relapse in Adult Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease. JAMA Neurology , 79 (5) pp. 518-525. 10.1001/jamaneurol.2022.0489.

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Abstract

Importance: Recent studies suggest that maintenance intravenous immunoglobulin (IVIG) may be an effective treatment to prevent relapses in myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD); however, most of these studies had pediatric cohorts, and few studies have evaluated IVIG in adult patients. Objective: To determine the association of maintenance IVIG with the prevention of disease relapse in a large adult cohort of patients with MOGAD. Design, Setting, and Participants: This was a retrospective cohort study conducted from January 1, 2010, to October 31, 2021. Patients were recruited from 14 hospitals in 9 countries and were included in the analysis if they (1) had a history of 1 or more central nervous system demyelinating attacks consistent with MOGAD, (2) had MOG-IgG seropositivity tested by cell-based assay, and (3) were age 18 years or older when starting IVIG treatment. These patients were retrospectively evaluated for a history of maintenance IVIG treatment. Exposures: Maintenance IVIG. Main Outcomes and Measures: Relapse rates while receiving maintenance IVIG compared with before initiation of therapy. Results: Of the 876 adult patients initially identified with MOGAD, 59 (median [range] age, 36 [18-69] years; 33 women [56%]) were treated with maintenance IVIG. IVIG was initiated as first-line immunotherapy in 15 patients (25%) and as second-line therapy in 37 patients (63%) owing to failure of prior immunotherapy and in 7 patients (12%) owing to intolerance to prior immunotherapy. The median (range) annualized relapse rate before IVIG treatment was 1.4 (0-6.1), compared with a median (range) annualized relapse rate while receiving IVIG of 0 (0-3) (t108= 7.14; P <.001). Twenty patients (34%) had at least 1 relapse while receiving IVIG with a median (range) time to first relapse of 1 (0.03-4.8) years, and 17 patients (29%) were treated with concomitant maintenance immunotherapy. Only 5 of 29 patients (17%) who received 1 g/kg of IVIG every 4 weeks or more experienced disease relapse compared with 15 of 30 patients (50%) treated with lower or less frequent dosing (hazard ratio, 3.31; 95% CI, 1.19-9.09; P =.02). At final follow-up, 52 patients (88%) were still receiving maintenance IVIG with a median (range) duration of 1.7 (0.5-9.9) years of therapy. Seven of 59 patients (12%) discontinued IVIG therapy: 4 (57%) for inefficacy, 2 (29%) for adverse effects, and 1 (14%) for a trial not receiving therapy after a period of disease inactivity. Conclusions and Relevance: Results of this retrospective, multicenter, cohort study of adult patients with MOGAD suggest that maintenance IVIG was associated with a reduction in disease relapse. Less frequent and lower dosing of IVIG may be associated with treatment failure. Future prospective randomized clinical trials are warranted to confirm these findings.

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