Kun Liu

Mirvetuximab soravtansine in platinum-resistant recurrent ovarian cancer with high folate receptor-alpha expression: a cost-effectiveness analysis

Mirvetuximab soravtansine (MIRV), a new antibody-drug conjugate, versus the investigator's choice of chemotherapy (IC) was the first treatment to demonstrate benefits for progression-free and overall survival in platinum-resistant recurrent ovarian cancer (PROC) with high folate receptor-alpha (high-FRα) expression. Efficacy, safety, and economic effectiveness make MIRV the new standard of care for these patients. Based on patients and clinical parameters from MIRASOL (GOG 3045/ENGOT-ov55) phase III randomized controlled trials, the Markov model with a 20-year time horizon was established to evaluate the cost and efficacy of MIRV and IC for PROC with high-FRα expression, considering the bevacizumab-pretreated situation from the American healthcare system. Total cost, life-years (LYs), quality-adjusted life-years (QALYs), incremental cost-effectiveness ratio (ICER), and incremental net health benefits were the main outcome indicators and compared with willingness-to-pay threshold of $100,000/QALY. Sensitivity and scenario analyses were conducted. Compared with the IC, MIRV was associated with incremental costs of $538,251, $575,674, and $188,248 with the corresponding QALYs (LYs) increased by 0.90 (1.55), 1.09 (1.88), and 0.53 (0.79), leading to ICERs of $596,189/QALY ($347,995/LY), $530,061/QALY ($306,894/LY), and $1,011,310/QALY ($680,025/LY) in the overall, bevacizumab-naïve, and bevacizumab-pretreated patients, respectively. When MIRV is reduced by more than 75%, it may be a cost-effective treatment. At the current price, MIRV for PROC with high-FRα expression is not the cost-effective strategy in the US. However, its treatment has higher health benefits in bevacizumab-naïve patients, which is likely to be an alternative.

Immunotherapy plus chemotherapy in patients with advanced endometrial cancer: a cost-effectiveness analysis

Pembrolizumab and dostarlimab are immune checkpoint inhibitors that target programmed death receptor 1 (PD-1). Combination anti-PD-1 regimens have been shown to exhibit favorable survival benefits when treating advanced endometrial cancer (EC). Which treatment was preferable will need to be confirmed by a cost-effectiveness comparison between them. Based on patient and clinical parameters from RUBY and NRG-GY018 phase III randomized controlled trials, the Markov model with a 20-year time horizon was established to evaluate the cost-effectiveness of dostarlimab plus chemotherapy (DC), pembrolizumab plus chemotherapy (PC), and chemotherapy alone (C) treatment for patients with mismatch repair-proficient microsatellite-stable (pMMR-MSS) and mismatch repair-deficient microsatellite instability-high (dMMR-MSI-H) advanced EC from the American payers' perspective. The main results include total cost, life-years (LYs), quality-adjusted life-years (QALYs), and the incremental cost-effectiveness ratio (ICER) at a $150,000/QALY of willingness-to-pay. In the pMMR-MSS population, DC, PC, and C produced costs (QALYs) of $99,205 (3.02), $322,530 (3.25), and $421,923 (4.40), resulting in corresponding ICERs of $974,177/QALY (PC vs. C), $234,527/QALY (DC vs. C), $86,671/QALY (DC vs. PC), respectively; In the dMMR-MSI-H population, DC, PC, and C obtained costs (QALYs) of $120,177 (5.73), $691,399 (8.43), and $708,787 (11.26), yielding ICERs of $266,423/QALY (PC vs. C), $135,165/QALY (DC vs. C), $7,866/QALY (DC vs. PC), respectively. In the US, DC was a more cost-effective treatment than PC for patients with advanced EC irrespective of MMR status. However, compared to C, DC was associated with more cost-effectiveness in the dMMR-MSI-H population.

International cost-effectiveness analysis of chemoradiotherapy plus pembrolizumab for locally advanced cervical cancer

Pembrolizumab administration can improve concurrent chemoradiotherapy (CCRT) efficacy in newly diagnosed, high-risk, locally advanced cervical cancer (LACC). Given the importance of balancing the costs of innovative therapeutics against their efficacy, this study was developed to assess the cost-effectiveness from the perspective of payers in Americas, Europe, and Asia. The main survival and other relevant parameters of 1,060 LACC patients from the KEYNOTE-A18 trial were collected to establish a lifetime 3-state Markov model to evaluate the cost and effectiveness of pembrolizumab-CCRT and placebo-CCRT. Primary outcome measures included total cost, life-years (LYs), quality-adjusted LYs (QALYs), incremental cost-effectiveness ratio (ICER), incremental net monetary benefit, and incremental net health benefits (INHBs) at countries' traditional willingness-to-pay (WTP) thresholds. Model stability was also examined through sensitivity analyses. The USA, Italy, and China are selected as representative countries for each of the 3 continents, assuming that their WTP thresholds were $150,000, $43,749, and $37,766 per QALY. The increased efficacy and costs of pembrolizumab-CCRT versus placebo-CCRT were 2.52 QALYs (3.11 LYs) and $346,479, 2.30 QALYs (2.81 LYs) and $236,776, 1.79 QALYs (2.12 LYs) and $29,027, calculating the ICER for the 3 countries as $137,500/QALY ($111,499/LY), $102,758/QALY ($84,192/LY), and $16,217/QALY ($13,726/LY), respectively. The respective INHBs were 0.21 QALY, -3.11 QALY, and 1.02 QALY, and pembrolizumab-CCRT was exhibited cost-effectiveness opportunities of 62.68%, 12.53%, and 75.23% at the selected WTP threshold, respectively. At current prices, pembrolizumab-CCRT represents a cost-effective alternative for patients with LACC in the USA and China, but not in Italy.

Olaparib plus bevacizumab as a first-line maintenance treatment for patients with advanced ovarian cancer by molecular status: an updated PAOLA-1 based cost-effectiveness analysis

The PAOLA-1 trial (NCT02477644) reported final survival benefit associated with olaparib plus bevacizumab maintenance treatment of patients with advanced ovarian cancer (AOC) based on molecular status. Our aimed to compare the cost-effectiveness of olaparib plus bevacizumab for overall patients, patients with a breast cancer susceptibility genes (BRCA) mutation, homologous recombination deficiency (HRD), or HRD without BRCA mutations AOC from the context of the American healthcare system. Analysis of health outcomes in life-years (LYs), quality-adjusted life-years (QALYs), and the incremental cost-effectiveness ratio (ICER) in various molecular status-based AOC patient at a $150,000/QALY of willingness-to-pay was performed using a state-transitioned Markov model with a 20-year time horizon. Meanwhile, sensitivity analyses assessments were also used to gauge the model's stability. The ICERs of olaparib plus bevacizumab versus bevacizumab alone were $487,428 ($374,758), $249,579 ($191,649), $258,859 ($198,739), and $270,736 ($206,640) per QALY (LY) in the overall patients, patients with BRCA mutations, patients with HRD, and patients with HRD without BRCA mutations AOC, respectively, which indicated that The ICERs was higher than $150,000/QALY in the US. Progression-free survival (PFS) value and olaparib cost emerged as the primary influencing factors of these findings in the sensitivity analysis. At current cost levels, olaparib plus bevacizumab treatment is not a cost-effective treatment for patients with AOC regardless of their molecular status in the US. However, this maintenance treatment may be more favorable health advantages for patients with BRAC mutations AOC.