Cost-utility analysis of trastuzumab deruxtecan versus trastuzumab emtansine in the second-line treatment for HER2-positive metastatic breast cancer
- VernacularTitle:德曲妥珠单抗对比恩美曲妥珠单抗二线治疗HER2阳性转移性乳腺癌的成本-效用分析
- Author:
Yanan WU
1
;
Fang WU
1
;
Yanhong HOU
1
Author Information
1. School of International Pharmaceutical Business，China Pharmaceutical University，Nanjing 211198，China
- Publication Type:Journal Article
- Keywords:
trastuzumab deruxtecan;
trastuzumab emtansine;
HER2-positive metastatic breast cancer;
partitioned survival
- From:
China Pharmacy
2024;35(2):204-209
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To evaluate the cost-effectiveness of trastuzumab deruxtecan（T-DXd） versus trastuzumab emtansine （T-DM1） in the second-line treatment of HER2-positive metastatic breast cancer， and to provide a basis for the selection of clinical medication regimen and medical and health decisions. METHODS Based on the clinical trial DESTINY-Breast03， a partitioned survival model was constructed， with a cycle of 3 weeks as the simulation of patients’ lifetime. The incremental cost-effectiveness ratio （ICER） was calculated by using quality-adjusted life years （QALY） as output indicators， and sensitivity analysis was used to verify the robustness of the basic analysis results； the cost-effectiveness of the second-line treatment for HER2-positive metastatic breast cancer was compared between T-DXd and T-DM1. RESULTS Under the premise of taking 3 times China’s per capita gross domestic product （GDP） in 2022 as the willingness-to-pay threshold （257 094 yuan/QALY）， the T-DXd group also needed to pay more cost compared with T-DM1 group while obtaining incremental utility （0.69 QALYs）， and the ICER value was 1 850 478.40 yuan/QALY. The results of univariate sensitivity analysis showed that progression-free survival state utility value， T-DXd price， cost discount rate were factors that had a great influence on ICER value， but these parameters could not flip the basic analysis results within a reasonable range. In the probability sensitivity analysis， when the threshold of willingness-to-pay rose to 1 500 400 yuan/QALY， the probability of economic activity was 50% in the T-DXd regimen. The results of the scenario analysis also verified the robustness of the original research results. CONCLUSIONS Under the premise of 3 times China’s per capita GDP as the WTP threshold， compared with T-DM1， T-DXd is not cost-effective in the second-line treatment of HER2-positive metastatic breast cancer.
