Treatment patterns and costs were characterized among patients with overactive bladder (OAB) receiving later-line target therapies (combination mirabegron/antimuscarinic, sacral nerve stimulation [SNS], percutaneous tibial nerve stimulation [PTNS], or onabotulinumtoxinA).
In a retrospective cohort study using 2013 to 2017 MarketScan databases, two partially overlapping cohorts of adults with OAB ("IPT cohort": patients with incident OAB pharmacotherapy use; "ITT cohort," incident target therapy) with continuous enrollment were identified; first use was index. Demographic characteristics, treatment patterns and costs over the 24-month follow-up period were summarized. Crude mean (standard deviation [SD]) OAB-specific (assessed by OAB diagnostic code or pharmaceutical dispensation record) costs were estimated according to target therapy.
The IPT cohort comprised 54 066 individuals (mean [SD] age 58.5 [15.0] years; 76% female), the ITT cohort, 1662 individuals (mean [SD] age 62.8 [14.9] years; 83% female). Seventeen percent of the IPT cohort were treated with subsequent line(s) of therapy after index therapy; among those, 73% received antimuscarinics, 23% mirabegron, and 1.4% a target therapy. For the ITT cohort, 32% were initially treated with SNS, 27% with onabotulinumtoxinA, 26% with combination mirabegron/antimuscarinic, and 15% with PTNS. Subsequently, one-third of this cohort received additional therapies. Mean (SD) costs were lowest among patients receiving index therapy PTNS ($6959 [$7533]) and highest for SNS ($29 702 [$26 802]).
Costs for SNS over 24 months are substantially higher than other treatments. A treatment patterns analysis indicates that oral therapies predominate; first-line combination therapy is common in the ITT cohort and uptake of oral therapy after procedural options is substantial.
Neurourology and urodynamics. 2020 Aug 22 [Epub ahead of print]
Stephen R Kraus, Aki Shiozawa, Shelagh M Szabo, Christina Qian, Basia Rogula, John Hairston
Department of Urology, University of Texas Health Sciences Center, San Antonio, Texas, San Antonio, Texas., Medical Affairs, Astellas Pharma Global Development Inc, Northbrook, Illinois., Health Economics, Broadstreet HEOR, Vancouver, Canada.