Open Access
Open access
BMC Health Services Research, volume 24, issue 1, publication number 676

Cost-effectiveness analysis of tislelizumab vs. camrelizumab for the treatment of second-line locally advanced or metastatic esophageal squamous cell carcinoma

Publication typeJournal Article
Publication date2024-05-29
scimago Q1
SJR1.029
CiteScore4.4
Impact factor2.7
ISSN14726963
Abstract
Background

Esophageal carcinoma is a type of cancer that occurs in the esophagus. For patients with locally advanced or metastatic esophageal squamous cell carcinoma who have either experienced disease progression following first-line standard chemotherapy or are intolerant to it, the prognosis is typically poor. Additionally, these patients often bear a substantial economic burden during the course of their treatment. Tislelizumab is a selective PD-1 inhibitor with efficacy proven in locally advanced or metastatic esophageal squamous cell carcinoma. The study aims to evaluate the cost-effectiveness of tislelizumab versus camrelizumab as the second-line treatment in locally advanced or metastatic esophageal squamous cell carcinoma (ESCC) patients in China.

Methods

From the perspective of China’s healthcare system, the partitioned survival model with three health states was established in a 3-week cycle and a lifetime horizon. Anchored matching adjusted indirect comparison was used for survival analyses based on individual patient data from RATIONALE 302 trial and the published ESCORT study due to the lack of head-to-head clinical trials. Only direct medical costs were included. Costs and utility values were derived from local charges, the published literature, and related databases. Sensitivity analyses and a scenario analysis were also performed to verify the robustness of the model results.

Results

Compared with camrelizumab monotherapy, tislelizumab monotherapy incurred a lower lifetime cost ($8,346 vs. $8,851) and yielded higher quality-adjusted life-years (QALYs) (0.87 vs. 0.63), which resulted in an incremental cost-effectiveness ratio (ICER) of -$2,051/QALY. Tislelizumab monotherapy is a dominant option over camrelizumab monotherapy in China. The three primary parameters upon which this result was most sensitive were the unit cost of camrelizumab, the unit cost of tislelizumab, and the duration of reactive cutaneous capillary endothelial proliferation (RCCEP). According to the probabilistic sensitivity analysis (PSA), tislelizumab monotherapy was 100% cost-effective when the WTP was 1–3 times GDP per capita in China($11,207/QALY∼$33,621/QALY). Scenario analysis showed that the result was consistent.

Conclusion

Tislelizumab monotherapy is a dominant option compared with camrelizumab monotherapy as the second-line treatment for locally advanced or metastatic ESCC in China.

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