New first-line treatment strategies for advanced lung squamous cell carcinoma.
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ABSTRACT:
SUBMITTER: Cai X
PROVIDER: S-EPMC7225139 | biostudies-literature | 2020 Apr
REPOSITORIES: biostudies-literature
Publications
New first-line treatment strategies for advanced lung squamous cell carcinoma.
Cai Xiuyu X Yu Hui H Cai Yanyu Y Zhang Bei B Zhou Yixin Y
Translational lung cancer research 20200401 2
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Project description:Rationale: Platinum-based chemotherapy is one of treatment mainstay for patients with advanced lung squamous cell carcinoma (LUSC) but it is still a "one-size fits all" approach. Here, we aimed to investigate the predictive and monitoring role of circulating cell-free DNA (cfDNA) profiling for the outcome of first-line chemotherapy in patients with advanced LUSC. Methods: Peripheral blood samples of 155 patients from a phase IV trial and 42 cases from an external real-world cohort were prospectively collected. We generated a copy number variations-based classifier via machine learning algorithm to integrate molecular profiling of cfDNA, named RESPONSE SCORE (RS) to predict the treatment outcome. To monitor the treatment efficacy, cfDNA samples collected at different time points were subjected to an ultra-deep sequencing platform. Results: The results showed that patients with high RS showed substantially higher objective response rate than those with low RS in training set (P < 0.001), validation set (P < 0.001) and real-world cohort (P = 0.019). Furthermore, a significant difference was observed in both progression-free survival (training set, P < 0.001; validation set: P < 0.001; real-world cohort: P = 0.019) and overall survival (training set, P < 0.001; validation set: P = 0.037) between high and low RS group. Notably, variant allele frequency (VAF) calculated from an ultra-deep sequencing platform significantly reduced in patients experienced a complete or partial response after 2 cycles of chemotherapy (P < 0.001), while it significantly increased in these of non-responder (P < 0.001). Moreover, VAF undetectable after 2 cycles of chemotherapy was correlated with markedly better objective response rate (P < 0.001) and progression-free survival (P < 0.001) than those with detectable VAF. Conclusions: These findings indicated that the RS, a circulating cfDNA sequencing-based stratification index, could help to guide first-line chemotherapy in advanced LUSC. The change of VAF is valuable to monitor the treatment response.
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Project description:ObjectiveWe aimed to investigate the cost-effectiveness of nivolumab plus chemotherapy and nivolumab plus ipilimumab versus chemotherapy in the first-line treatment for advanced esophageal squamous-cell carcinoma (ESCC) patients from a healthcare system perspective in China.MethodsOn the basis of the CheckMate 648 trial, a partitioned survival model was constructed to estimate economic costs and health outcomes among overall and PD-L1-positive advanced ESCC patients over a 10-year lifetime horizon. The health-related costs and utilities were obtained from the local charges and published literature. The lifetime costs, life-years, quality-adjusted life-years (QALYs), and incremental cost-effectiveness ratio (ICER) were measured. One-way and probabilistic sensitivity analyses (PSA) were performed to assess the robustness of the model.ResultsIn the base-case analysis, in overall and PD-L1-positive advanced ESCC patients, the ICERs were $415,163.81/QALY and $216,628.00/QALY for nivolumab plus chemotherapy, and$430,704.11/QALY and $185,483.94/QALY for nivolumab plus ipilimumab, respectively, compared with chemotherapy. One-way sensitivity analyses revealed that patients' weight was the most influential parameter on ICER. The PSA demonstrated that the probability of nivolumab combination therapy being cost-effective was 0% over chemotherapy at the current price and willingness-to-pay threshold ($38,351.20/QALY). When the price of nivolumab and ipilimumab decreased 80%, the cost-effective probability of nivolumab plus ipilimumab increased to 40.44% and 86.38% in overall and PD-L1-positive advanced ESCC patients, respectively.ConclusionNivolumab combination therapy could improve survival time and health benefits over chemotherapy for advanced ESCC patients, but it is unlikely to be a cost-effective treatment option in China.
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Project description:BackgroundThe global Phase III LUX-Lung 8 trial (ClinicalTrials.gov: NCT01523587) identified significant improvements in progression-free survival (PFS), overall survival (OS), and patient-reported outcomes (PROs) with second-line afatinib vs erlotinib in patients with advanced squamous cell carcinoma (SCC) of the lung.Materials and methodsWe conducted a post hoc analysis of data for patients in LUX-Lung 8 from mainland China (n=67). Compared with erlotinib, afatinib reduced the risk of disease progression or death (PFS) in the Chinese subgroup by 30% (HR=0.70; 95% CI: 0.38-1.27).ResultsThe risk of death was reduced by 31% (HR=0.69; 95% CI: 0.39-1.21). The proportion of Chinese patients with improvements in PROs also favored afatinib vs erlotinib (global health status/quality of life [QoL], 52.8% vs 29.6%, P=0.072; dyspnea, 47% vs 26%, P=0.091; "dyspnea walked", 44% vs 15%, P=0.017; QoL rate, 53% vs 26%, P=0.037).DiscussionWhile this analysis was not powered to demonstrate differences compared to the overall trial population (OTP), and there were some differences in baseline characteristics (eg, the proportion of patients aged ≥65 years old), the benefits of afatinib treatment in Chinese patients with SCC of the lung appeared to be at least comparable to that observed in LUX-Lung 8. As with the OTP, the most common adverse events (AEs) with afatinib in the Chinese subgroup were diarrhea and rash/acne, and the incidence and type of the most frequently occurring AEs were similar.ConclusionThe results suggest that afatinib represents a feasible treatment option for Chinese patients with advanced SCC of the lung following progression on platinum-based chemotherapy.
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