AI Article Synopsis
- The CHOICE-01 trial demonstrated that toripalimab combined with chemotherapy improved outcomes for patients with advanced non-small cell lung cancer (NSCLC) lacking driver genes, prompting a study on its cost-effectiveness in the Chinese healthcare system.
- A model was created to evaluate the costs and health outcomes of adding toripalimab to first-line chemotherapy, using data from the CHOICE-01 trial and focusing on direct medical expenses.
- Findings indicated that toripalimab added an extra cost of $21,052 but offered better health outcomes (0.71 more QALYs), making it cost-effective compared to standard chemotherapy based on the current willingness-to-pay threshold.
Article Abstract
Background And Objective: The CHOICE-01 trial showed that toripalimab plus chemotherapy achieved satisfactory outcomes compared with chemotherapy in patients with advanced non-small cell lung cancer (NSCLC) who were negative for driver genes, but the economics of this regimen is unclear. Therefore, this study aimed to evaluate the cost-effectiveness of toripalimab in combination with chemotherapy in advanced NSCLC with negative driver genes from the perspective of the Chinese healthcare system.
Materials And Methods: A three-state partitioned survival model was developed to simulate the costs and outcomes associated with adding toripalimab to first-line chemotherapy. The clinical data in the model came from the CHOICE-01 trial, only direct medical costs were included, and utility values were referred to the literature. Four models were applied to explore the differences in the results of fitting and extrapolating K-M curves from different models, and cost-effectiveness subgroup analysis was performed. The incremental cost-effectiveness ratio (ICER) was used as the main outcome measure. Sensitivity analysis was performed to assess the impact of parameter uncertainty on the model.
Results: The baseline analysis showed that toripalimab coupled with chemotherapy cost $21,052 more than chemotherapy ($43,197 vs. $22,145) and also gained 0.71 QALYs more (1.75 QALYs vs. 1.03 QALYs), with an ICER of $29,478/QALYs. At the current willingness-to-pay threshold ($35,108/QALY), the extra cost was well worth it. The results of fitting and extrapolating the survival curves using other models were consistent with the results of the standard parametric model. Subgroup analysis demonstrated that the addition of toripalimab to chemotherapy was economical. Sensitivity analysis showed that the utility values of PD and PFS stages had the greatest impact on the model.
Conclusion: From the viewpoint of the Chinese healthcare system, toripalimab combined with chemotherapy in the treatment of advanced NSCLC with negative driver genes was likely to be cost-effective compared with chemotherapy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10080092 | PMC |
| http://dx.doi.org/10.3389/fpubh.2023.1137255 | DOI Listing |
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