A new chapter in immune checkpoint inhibitor therapy: starting with advanced lung squamous cell carcinoma.
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ABSTRACT:
SUBMITTER: Fei K
PROVIDER: S-EPMC7354157 | biostudies-literature | 2020 Jun
REPOSITORIES: biostudies-literature
Publications
A new chapter in immune checkpoint inhibitor therapy: starting with advanced lung squamous cell carcinoma.
Fei Kailun K Xu Jiachen J Wang Zhijie Z
Translational lung cancer research 20200601 3
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Project description:BackgroundPrimary adenosquamous carcinoma (ASC) of the lung is a rare and aggressive disease and limited information is available on the efficacy of immune checkpoint inhibitors (ICIs) for this disease. Here, we evaluated the expression status of programmed death-1 ligand 1 (PD-L1) and efficacy of ICIs in patients with pulmonary ASC.MethodsThe efficacy and toxicity of ICIs were examined in 38 patients with previously treated lung ASC from November 2017 to October 2021 in Zhejiang Cancer Hospital (Hangzhou, China). Survival curves were plotted using the Kaplan-Meier method and the Cox proportional hazards model applied for univariate and multivariate analyses.ResultsA total of 38 patients with ASC were included in this retrospective study. ICI treatment induced an objective response rate (ORR) of 23.7% and a disease control rate (DCR) of 86.8%. The median progression-free survival (PFS) and median overall survival (OS) were 5.47 and 24.10 months, respectively. Seventeen patients were successfully evaluated for PD-L1 expression status, with 11 (64.7%) identified as PD-L1-positive. ORR and DCR for PD-L1-positive patients were 36.4% (4/11) and 100% (11/11) and the corresponding values for PD-L1-negative patients were 0 (0/6) and 50% (3/6), respectively. The median PFS of PD-L1-positive and PD-L1-negative patient groups was 5.00 and 1.90 months (P=0.166) while the median OS was 11.30 months and not reached, respectively (P=0.966). The incidence rate of immune-related adverse events (irAEs) was 52.6%, with 13.2% grade 3-4 irAEs. The most common irAEs were malaise and pneumonitis. One patient died of pneumonitis during the study.ConclusionsICIs show considerable potential as a treatment option for lung ASC. PFS and OS rates are similar for PD-L1-positive and PD-L1-negative patients. Further large-scale studies are required to establish the relationship between PD-L1 expression and response to ICIs in ASC.
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Project description:BackgroundThe advent of immune checkpoint inhibitors (ICIs) therapy has resulted in significant survival benefits in patients with non-small-cell lung cancer (NSCLC) without increasing toxicity. However, the utilisation of immunotherapy for small-cell lung cancer (SCLC) remains unclear, with a scarcity of systematic comparisons of therapeutic effects and safety of immunotherapy in these two major lung cancer subtypes. Herein, we aimed to provide a comprehensive landscape of immunotherapy and systematically review its specific efficacy and safety in advanced lung cancer, accounting for histological types.MethodsWe identified studies assessing immunotherapy for lung cancer with predefined endpoints, including overall survival (OS), progression-free survival (PFS), objective response rate (ORR), and treatment-related adverse events (TRAE), from PubMed, Embase, Medline, and Cochrane library. A random-effects or fixed-effect model was adopted according to different settings.ResultsOverall, 38 trials with 20,173 patients with lung cancer were included in this study. ICI therapy resulted in a significantly prolonged survival in both patients with NSCLC and SCLC when compared with chemotherapy (hazard ratio [HR] = 0.74; 95% confidence interval [CI], 0.70-0.79] and [HR = 0.82; 95% CI, 0.75-0.90], respectively). The magnitude of disease control and survival benefits appeared superior with ICI plus standard of care (SOC) when compared with SOC alone. OS and PFS advantages were observed only when immunotherapy was employed as the first-line treatment in patients with SCLC.ConclusionICI therapy is a promising therapeutic option in patients with NSCLC and SCLC. ICI plus SOC can be recommended as the optimal first-line treatment for patients with SCLC, and double-target ICIs combined with SOC are recommended in patients with NSCLC as both the first and subsequent lines of treatment. Additionally, non-first-line immunotherapy is not recommended in patients with SCLC.
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