Abstract
e20647 Background: Given a dearth of literature, this study aimed to investigate real-world use of systemic therapies, survival, and costs among elderly SCLC patients (pts) in U.S. Methods: Pts (65+ years old) with an initial diagnosis of SCLC during 2007-2013 were identified using the SEER-Medicare data. Overall survival (OS), duration of treatment (DOT) and time to next treatment (TTNT) were estimated based on the Kaplan-Meier method. Costs (2016 US dollars) were derived from Medicare claims. Results: A total of 11 812 pts were identified with 7 797 (66%) being stage IV at diagnosis. During an average of 10 months (m) follow-up post diagnosis, 6 509 (55%), 2 238 (19%) and 679 (6%) received first line (1L), 2L and 3L therapy, respectively. The median OS was 9 m from 1L start and 6 m from 2L or 3L start, suggesting existing treatment providing limited survival benefit. Majority pts (93%) received platinum-based therapy for 1L with Car + etoposide (Eto, 59%) being the most commonly used regimen, followed by Cis + Eto (18%) and Car monotherapy (8%). Car + Eto, Top and Pac were the top 3 regimens used in 2L and 3L. Median DOTs were 4-6 m, yet TTNT ranged from 7 to 18 m across lines of therapy. The average per person per month (PPPM) costs were $9.4k for 1L, $8.9k for 2L, and $8.8k for 3L. Conclusions: Advanced SCLC remains an aggressive malignancy with poor prognosis, lack of ideal therapy and high medical cost, which highlighted high unmet medical need of SCLC among elderly pts. [Table: see text]
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