期刊
VALUE IN HEALTH REGIONAL ISSUES
卷 27, 期 -, 页码 99-107出版社
ELSEVIER
DOI: 10.1016/j.vhri.2021.04.007
关键词
carboplatin; China; cost-effectiveness; melanoma; paclitaxel; pembrolizumab
资金
- Merck Sharp Dohme Corp
- Merck Sharp & Dohme China Holding Co, Ltd, China
The study finds that pembrolizumab is cost-effective compared with standard-of-care chemotherapy in Chinese patients with unresectable or metastatic melanoma after first-line treatment, yielding more life-years and quality-adjusted life-years. These findings were robust against a wide range of sensitivity analyses.
Objective: This study aimed to evaluate the cost-effectiveness of pembrolizumab compared with standard-of-care chemotherapy (paclitaxel 1 carboplatin [PC]) in patients with unresectable or metastatic melanoma after first-line treatment from a Chinese healthcare system perspective. Methods: We conducted a partitioned-survival model with a 1-week cycle length and a 20-year base-case time horizon. Piecewise parametric models were fitted to KEYNOTE-006 trial data to estimate progression-free survival and overall survival for pembrolizumab, and a network meta-analysis was used to estimate the clinical outcomes for standard of care. Quality-adjusted life-years (QALYs) were calculated using EQ-5D data from KEYNOTE-006, applying Chinese-specific utility tariffs. Costs included drug acquisition, administration, adverse events, and disease management, reflecting the Chinese pricing system. Chinese-specific disease management costs were estimated based on clinical opinion on health state resource use and chemotherapy-related adverse events. Costs and outcomes were discounted at 5% annually. Multiple deterministic and probabilistic sensitivity analyses were performed to test the robustness of the results. Results: In the base-case analysis, the treatment of pembrolizumab is estimated to yield 2.63 life-years (LYs) and 2.24 QALYs at an incremental cost of (sic)372 316.46 versus PC. The incremental costs per LY and per QALY were (sic)141771.00 and (sic)165 865.69, respectively, the latter being below a threshold of 3 times the per capita gross domestic product ((sic)193 932) in China, deemed as cost-effective according to the World Health Organization threshold. These findings were robust against a wide range of sensitivity analyses. Conclusions: Pembrolizumab is projected as cost-effective compared with PC in patients with unresectable or metastatic melanoma after first-line treatment in China.
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