Cost-effectiveness of immune checkpoint inhibitors in the treatment of non-small-cell lung cancer as a second line in Taiwan.

To evaluate the cost-effectiveness of immune checkpoint inhibitors versus docetaxel in patients with advanced non-small-cell lung cancer. A Markov model was constructed to simulate the clinical outcomes and costs of advanced non-small-cell lung cancer. Clinical outcomes data were derived from randomized clinical trials. Drug acquisition cost and other health resource use were obtained from the claim data of a tertiary hospital and the National Health Insurance. The outcome was an incremental cost-effectiveness ratio expressed as cost per quality-adjusted life year gained. One-way and probabilistic sensitivity analyses were performed to evaluate the uncertainty of the model parameters. In the base case, patients treated with immunotherapies in the second line were associated with higher costs and higher mean survival. The incremental costs per quality-adjusted life year gained for pembrolizumab, nivolumab, or atezolizumab compared to docetaxel were NT$416,102, NT$1,572,912 and NT$1,580,469, respectively. The results showed that pembrolizumab was more cost effective than nivolumab and atezolizumab compared with docetaxel as a second-line regimen for patients with previously treated advanced non-small-cell lung cancer at willingness to pay threshold in Taiwan.