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Combination checkpoint inhibitors for treatment of non-small-cell lung cancer: an update on dual anti-CTLA-4 and anti-PD-1/PD-L1 therapies.

ABSTRACT: Immunotherapy has revolutionized cancer treatment. In non-small-cell lung cancer (NSCLC), monotherapy with immune checkpoint inhibitors has improved survival in metastatic disease. Combinations of immune checkpoint inhibitors have shown synergy in preclinical models and are being studied as part of the treatment armamentarium in NSCLC. This review discusses the rationale, outcomes, and challenges of combination immune checkpoint blockade. Despite the challenges, this paper also presents some solutions and ways to improve our understanding and implementation of such combinations in the future.

SUBMITTER: Puri S

PROVIDER: S-EPMC7048109 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Combination checkpoint inhibitors for treatment of non-small-cell lung cancer: an update on dual anti-CTLA-4 and anti-PD-1/PD-L1 therapies.

Puri Sonam S Shafique Michael M

Drugs in context 20200113

Immunotherapy has revolutionized cancer treatment. In non-small-cell lung cancer (NSCLC), monotherapy with immune checkpoint inhibitors has improved survival in metastatic disease. Combinations of immune checkpoint inhibitors have shown synergy in preclinical models and are being studied as part of the treatment armamentarium in NSCLC. This review discusses the rationale, outcomes, and challenges of combination immune checkpoint blockade. Despite the challenges, this paper also presents some sol ...[more]

PMID: 32158484

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Project description:BackgroundMetformin is one of the biguanides commonly used in patients with type II Diabetes Mellitus. Apart from its hypoglycemic properties, metformin also inhibits the cell cycle by restricting protein synthesis and cell proliferation via regulating the LKB1/AMPL pathway. Furthermore, it also enhances the PD-1 blockade through a reduction of tumor hypoxia. Metformin has shown a significant favorable impact on treatment-related outcomes in solid tumors, but these outcomes have not been replicated in the limited clinical studies done on malignant melanoma. Moreover, none of these studies have reported on the efficacy of the combined use of metformin and immune checkpoint inhibitors (ICIs).MethodsThis is a retrospective cohort study that includes patients diagnosed with metastatic malignant melanoma and treated with ipilimumab, nivolumab, and/or pembrolizumab (Cohort A); or ipilimumab, nivolumab, and/or pembrolizumab plus metformin (Cohort B) between January 1st 2011 through December 15th 2017. In this study, patients are stratified based on anti-PD-1 only and anti-CTLA4/anti-PD-1 combination therapies in each cohort. Objective response rate (ORR) is the primary endpoint. Disease control rate (DCR), overall survival (OS) and progression-free survival (PFS) are the secondary endpoints.ResultsCohort A had 33 patients (60%), while cohort B had 22 (40%). Overall patient characteristics were similar between both cohorts. ORR was higher in cohort B (68.2% vs. 54.5%, P = 0.31). The DCR was higher in cohort B as well (77.3% vs. 60.6%, P = 0.19). Median OS (46.7 months vs. 28 months), and median PFS (19.8 months vs. 5 months) were longer in cohort B. However, on univariate and multivariate analyses, none of these differences were statistically significant. The mean number of new metastatic sites which appeared during therapy were significantly higher in cohort A (A:1.51 vs. B:0.59, P = 0.009).ConclusionWe have observed favorable treatment-related outcomes (ORR, DCR, median PFS and median OS) in patients who have received metformin in combination with ICIs without reaching significance, probably, due to small sample size. Hence, large prospective clinical trials are required to study the synergistic effect of metformin in combination with ICIs before it can be recommended as routine additive therapy.

Dataset Information

Combination checkpoint inhibitors for treatment of non-small-cell lung cancer: an update on dual anti-CTLA-4 and anti-PD-1/PD-L1 therapies.

Publications

Combination checkpoint inhibitors for treatment of non-small-cell lung cancer: an update on dual anti-CTLA-4 and anti-PD-1/PD-L1 therapies.

Similar Datasets

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