Abstract
Objective/backgroundRestless legs syndrome (RLS) is a complex condition associated with circadian rhythm that disrupts sleep and can cause multisystemic consequences. This study assesses pharmacotherapy treatment initiation, estimates annual treatment prevalence, and assesses treatment patterns for early-onset idiopathic RLS. MethodsWe used the MarketScan Commercial Claims Database from 2012 to 2019 to conduct a new user retrospective cohort study. Annual treatment prevalence was calculated from a cross-sectional sample. Newly diagnosed adults with early-onset (18–44 years) idiopathic RLS who initiated on and off-label gabapentinoids, dopamine agonists, or levodopa/carbidopa were included. Among monotherapy users who had one year of insurance enrollment, treatment patterns (single fill, continuous use of initiated therapy, switching, and add-on therapy) were examined and mean time on the initial treatment (as a measure of persistence) was calculated. ResultsIn total, 6,828 patients were initiated on monotherapy treatment for early-onset idiopathic RLS in which 4,638 met all inclusion criteria. In 2019, annual prevalence of monotherapy treatment of diagnosed patients for ropinirole was 171.3/1,000 patients; 85.0/1,000 patients for pramipexole; and 132.1/1,000 patients for gabapentin. Overall, 22.3% (n = 1,033) of patients maintained their initiated pharmacotherapy for the entire year. Rotigotine had the longest persistence (mean 185.4 [161.4 SD] days) but this user group was the smallest (n = 29). Gabapentin enacarbil, pregabalin, and rotigotine use was low (2.8% total). ConclusionRopinirole, pramipexole, and gabapentin were initiated most often for early-onset idiopathic RLS. FDA-approved agents for RLS, including gabapentin enacarbil and rotigotine, were used less frequently. In general, persistence was low for all RLS study drugs examined.
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