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TAS-102 with or without bevacizumab treatment for patients with metastatic colorectal cancer: a multi-country
Youwen Zhu1, Kun Liu1, Hong Zhu2
1Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China.
Background:
TAS-102 (trifluridine/tipiracil) plus bevacizumab demonstrated a significant survival benefit in patients with refractory metastatic colorectal cancer (mCRC). Physicians and patients are uncertain whether this treatment option is clinically acceptable in different countries, underscoring the need for analyses of the cost-effectiveness of this regimen.
Objectives:
To guide doctors and patients to choose TAS-102 plus bevacizumab or TAS-102 monotherapy in cancer treatment.
Design:
The cost-effective analysis.
Methods:
A comprehensive Markov model of the 10-year horizon for three health states was established using data from the SUNLIGHT trial to evaluate the cost and health effects of TAS-102 with or without bevacizumab at particular willingness-to-pay (WTP) thresholds, analyzing parameters including quality-adjusted life-years (QALYs), incremental cost-effectiveness ratios (ICERs), incremental net monetary benefit, as well as incremental net-health benefit (INHB). Sensitivity and subgroup analyses were additionally conducted.
Results:
Treatment with TAS-102 plus bevacizumab versus TAS-102 monotherapy increased effectiveness (cost) by 0.39 ($151,474), 0.38 ($26,794), and 0.41 ($8596) QALYs, with an ICER of $388,171, $69,617, and $20,919 per QALY and an INHB of -0.62, -0.03, and 0.18 QALYs in the United States, United Kingdom, and China, respectively. The utility of progression-free survival was the most important factor in this model. At respective WTP thresholds of $150,000, $65,000, and $37,653 per QALY in the United States, United Kingdom, and China, the odds of TAS-102 plus bevacizumab being the dominant treatment were 0%, 49.6%, and 87.8%, respectively. In addition, mCRC patients with an Eastern Oncology Cooperative Group performance status ⩾ 1 may be the best candidates for treatment.
Conclusion:
TAS-102 plus bevacizumab treatment represents a cost-effective third-line treatment for refractory mCRC from a Chinese payers' perspective, although the same was not true in the United States or United Kingdom at current drug prices.
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