Published in:
01-08-2020 | SCLC | Original Article
Outcomes with immune checkpoint inhibitors for relapsed small-cell lung cancer in a Swiss cohort
Authors:
Sabine Schmid, Laetitia A. Mauti, Alex Friedlaender, Veronika Blum, Sacha I. Rothschild, Hasna Bouchaab, Patrizia Frösch, Christian Britschgi, David König, Luciano Wannesson, Wolf-Dieter Janthur, Sämi Schär, Izadora Demmer, Alfredo Addeo, Wolfram Jochum, Martin Früh
Published in:
Cancer Immunology, Immunotherapy
|
Issue 8/2020
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Abstract
Objectives
Early clinical trials showed promising outcomes with immune-checkpoint inhibitors (ICI) in a subset of patients with relapsed small-cell lung carcinoma (SCLC). The aim of this retrospective analysis was to assess the efficacy and safety of ICI for relapsed SCLC in a real-world patient population.
Methods
Nine cancer centres in Switzerland contributed data to this cohort. Responses were assessed by the local investigators using standard RECIST v1.1 criteria. Progression-free survival (PFS) and overall survival (OS) were analysed by the Kaplan–Meier method. Associations between potential predictive markers and survival endpoints were probed by Cox proportional hazards.
Results
Forty-five patients were included in the analysis. Median age was 63 years, 73% were males and 18% had an ECOG performance status (PS) ≥ 2. ICIs were given as second-line treatment in 60%. Twenty-four patients (53%) received ipilimumab with nivolumab. Twenty-eight patients (62%) had undergone irradiation (RT) prior to or during ICI. Overall response rate (ORR) was 29% and median PFS and OS were 2.3 and 6.5 months, respectively. Median duration of response was 9 months (95% CI 2.8–NA). Five patients maintained their response for > 6 months, all of them receiving combination treatment. There were no new safety signals.
Conclusion
This is the first report of “real-world” data on ICI in relapsed SCLC also including patients with poor PS. Promising durable responses were observed. No biological prognostic marker could be identified.