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Real-world durability of relapse rate reduction in patients with multiple sclerosis receiving fingolimod for up to 3 years: a retrospective US claims database analysis.
Journal of the Neurological Sciences 2019 March 16
OBJECTIVE: To assess real-world durability of reduction in relapse rates among patients with multiple sclerosis (MS) receiving fingolimod therapy over a longer-term period of follow-up.
METHODS: Patients with MS who initiated fingolimod were identified from a US claims database (January 1, 2009 to September 30, 2016) and followed for 3 years post-initiation. Annualized relapse rates (ARRs) were calculated during the 1-year pre-initiation period, and during each year over the 3-year follow-up period. Time from fingolimod initiation to discontinuation (≥60-day treatment gap) was also summarized.
RESULTS: Among 1599 fingolimod initiators, 1158 (72%) had continuous fingolimod use up to the start of year 2 and 937 (59%) had continuous fingolimod use up to the start of year 3. The mean baseline ARR during the 1-year pre-initiation period for all initiators was 0.51. After fingolimod initiation, mean ARRs were consistently lower in each year of follow-up: 0.25 (95% CI: 0.22, 0.28) in year 1 for all fingolimod initiators, 0.22 (0.18, 0.25) in year 2 for patients with continuous fingolimod use up to the start of year 2, and 0.23 (0.19, 0.27) in year 3 for patients with continuous fingolimod use up to the start of year 3. Median time on treatment was 33 months for all patients initiating fingolimod.
CONCLUSIONS: Patients with MS who received continuous fingolimod therapy experienced a sustained reduction in relapse rates (>50% vs. baseline) during each year of a 3-year follow-up period.
METHODS: Patients with MS who initiated fingolimod were identified from a US claims database (January 1, 2009 to September 30, 2016) and followed for 3 years post-initiation. Annualized relapse rates (ARRs) were calculated during the 1-year pre-initiation period, and during each year over the 3-year follow-up period. Time from fingolimod initiation to discontinuation (≥60-day treatment gap) was also summarized.
RESULTS: Among 1599 fingolimod initiators, 1158 (72%) had continuous fingolimod use up to the start of year 2 and 937 (59%) had continuous fingolimod use up to the start of year 3. The mean baseline ARR during the 1-year pre-initiation period for all initiators was 0.51. After fingolimod initiation, mean ARRs were consistently lower in each year of follow-up: 0.25 (95% CI: 0.22, 0.28) in year 1 for all fingolimod initiators, 0.22 (0.18, 0.25) in year 2 for patients with continuous fingolimod use up to the start of year 2, and 0.23 (0.19, 0.27) in year 3 for patients with continuous fingolimod use up to the start of year 3. Median time on treatment was 33 months for all patients initiating fingolimod.
CONCLUSIONS: Patients with MS who received continuous fingolimod therapy experienced a sustained reduction in relapse rates (>50% vs. baseline) during each year of a 3-year follow-up period.
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