Раннее удлинение интервала дозирования ritoximab в множестве склерозов: сравнительное когортное исследование эффективности и безопасности.
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Fossum Maria Therese, Torgauten Hilde Marie, Aarseth Jan Harald, Shirzadi Maryam, Wergeland Stig, Myhr Kjell-Morten, Bø Lars, Torkildsen Øivind, Wesnes Kristin
Аннотация
Оригинал публикации
Early extended interval dosing of rituximab in multiple sclerosis: A comparative cohort study on efficacy and safety.
BACKGROUND: Rituximab is a highly effective disease modifying therapy for persons with MS (pwMS), but is associated with increased risk of infections. Due to the Covid-19 pandemic, St. Olavs Hospital (SOHO) in Trondheim, Norway, changed from the standard interval dosing (SID) of six months to extended interval dosing (EID) of nine months after the third infusion. At Haukeland University Hospital (HUS) in Bergen, Norway, SID was maintained. This study compares efficacy and safety measures of EID with SID at these two hospitals.
METHODS: In the Norwegian MS registry (NMSR), we identified pwMS aged 18-60 years who were followed at SOHO or HUS and started rituximab between October 2018 and June 2021. The patients had an initial period with similar 6-month dosing intervals, followed by a study period with different dosing intervals. They were followed until august 2023, or until deviating dosing intervals, discontinuation, or loss to follow up. We compared relapse rates, the occurrence of new magnetic resonance imaging (MRI) T2 lesions, and incidence rates of infections, IgG- hypogammaglobulinemia and severe neutropenia.
RESULTS: We included 78 pwMS from SOHO and 217 from HUS, with overall short disease duration (median 0.6 years at SOHO and 0.2 years at HUS) and similar baseline characteristics. We found no statistical significant differences in relapse rates (p >0.99), proportions with new T2 lesions (p = 0.69) or incidence rates of adverse events.
CONCLUSION: Our study suggests that early 9-month EID after the third infusion is a safe and effective treatment option for MS patients.