ArticleAdvances in therapy2026
Comparative Effectiveness and Risk of Severe Infection in Adult Patients With MS Treated With Diroximel Fumarate Versus Anti-CD20 Monoclonal Antibodies: A Real-World Claims Analysis.
Article in Advances in therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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17 authors.
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Abstract
introductionMultiple sclerosis (MS) is a chronic, immune-mediated neurological disease, leading to significant morbidity. Over 25 disease-modifying therapies (DMTs) are approved for MS; however, older patients may benefit less from high-efficacy DMTs. We compared the risk of severe infections (SIs) and annualized relapse rate (ARR) by age (< 45 and ≥ 45 years) between diroximel fumarate (DRF) and anti-CD20 monoclonal antibodies (mAbs) in patients with MS.
methodsThis retrospective study utilized the Komodo Health Claims database to identify patients treated with DRF or anti-CD20 agents. Patients were propensity score matched 1:1 on baseline characteristics and stratified by age (younger: < 45 years; older: ≥ 45 years). Infection-related encounters were identified by diagnosis codes; SIs required hospitalization or intravenous antibiotics. MS relapses were based on inpatient or outpatient claims and associated treatments.
resultsBetween 2016 and 2025, 2894 propensity score-matched patients with MS who initiated DRF (n = 1447) or anti-CD20s (n = 1447) were included. DRF-treated patients had a lower proportion of SIs at 12 and 24 months compared with anti-CD20-treated patients (p ≤ 0.002 at 24 months). Younger DRF-treated patients had significantly fewer SIs (p = 0.005), while older DRF-treated patients had lower non-SI rates. COVID-19-related SIs were also significantly lower in DRF-treated patients (p < 0.001). ARRs were similar between the two groups.
conclusionDRF-treated patients with MS had a significantly lower risk of SI compared with anti-CD20-treated patients, with no difference in ARR. More real-world studies are needed to understand the efficacy and safety of DMTs in the setting of de-escalation in aging patients with MS.
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