BackgroundLung cancer is the leading cause of cancer death in the United States. Among non-small cell lung cancer (NSCLC) patients with anaplastic lymphoma kinase mutation (ALK+) and who were resistant to crizotinib, ceritinib was approved as a following treatment. Ceritinib was found to be cost effective among Canadian patients, but its cost effectiveness among US population remains unknown.ObjectiveTo evaluate the cost-effectiveness of ceritinib versus chemotherapy among ALK+ NSCLC patients who received treatment of crizotinib and chemotherapy, from the US healthcare perspective.MethodsA Markov model with three health states (progression-free, progression, and death) and a partitioned survival analysis model (PartSA) were developed, respectively. Survival functions, including progression free survival and overall survival, for ceritinib and chemotherapy were extrapolated from clinical trials ASCEND-2, ASCEND-5, and PROFILE-1007. Costs for the drugs, monitoring, and adverse events, and utilities at each health state were derived from published literature. Costs were inflated to 2018 US dollars. An annual discount rate of 3% was applied to costs and utilities, and a 5-year time horizon was applied to the analysis. Incremental cost per quality-adjusted life year (QALY) gained for ceritinib versus chemotherapy was estimated with $150,000/QALY as the US willingness-to-pay threshold. Sensitivity analyses (i.e., one-way sensitivity analysis and probabilistic sensitivity analysis) were conducted to test the uncertainties of the models.ResultsBoth models find ceritinib yields fewer QALYs than chemotherapy. The Markov model indicates modest cost-savings of ceritinib when compared to chemotherapy (-$3,131) and small declines in health (-1.04 QALYs) ($3008.39 per QALY lost). The PartSA model indicates additional costs of ceritinib when compared to chemotherapy ($12,884.95) and similar declines in health (-0.87 QALYs), indicating a dominated strategy. Both models were most sensitive to parameters of medical cost for progression disease and cost of ceritinib.ConclusionsCeritinib is not cost effective compared to chemotherapy among patients who were previously treated with crizotinib and chemotherapy, from the US healthcare perspective.