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Effect of assisted reproductive technology on multiple sclerosis relapses: Case series and meta-analysis

Abstract : BACKGROUND: Five case series reported increased relapse risk after assisted reproductive technologies (ART) in women with multiple sclerosis (MS), but small numbers and heterogeneous study design limit broader conclusions. OBJECTIVE: To evaluate the risk of relapses after ART in an independent case series and in aggregated analyses of existing studies. METHODS: We compared annualized relapse rate (ARR) in the 3 months after, and 12 months before, ART in (1) an unpublished cohort (Boston: prospectively collected relapses; 22 ART cycles), (2i) data pooled from Boston and five published studies (164 cycles), and (2ii) a meta-analysis of all case series published by 2017 (220 cycles; PRISMA and MOOSE guidelines). RESULTS: In the Boston cohort, mean ARR was not higher after ART than before (mean: 0.18 ± 0.85 vs 0.27 ± 0.55, p = 0.58). In the pooled analyses, ARR was significantly higher after ART for all clinical scenarios, including varying ART protocols (p ⩽ 0.01 for each). The meta-analysis confirmed an increased ARR after ART (mean difference (MD) = 0.92, 95% confidence interval (CI) = [0.33, 1.51], p = 0.01). CONCLUSION: These pooled data support an increase in ARR following ART. Reasons for local variation in ARR after ART, and consideration of MS treatments during conception attempts, will be pursued.
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Submitted on : Monday, September 16, 2019 - 12:33:01 PM
Last modification on : Wednesday, April 27, 2022 - 4:06:52 AM



Riley Bove, Kelsey Rankin, Chris Lin, Chao Zhao, Jorge Correale, et al.. Effect of assisted reproductive technology on multiple sclerosis relapses: Case series and meta-analysis. Multiple Sclerosis Journal, SAGE Publications, 2019, Epub ahead of print. ⟨10.1177/1352458519865118⟩. ⟨inserm-02289087⟩



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