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Efficacy and Safety of Ipilimumab plus Chemotherapy for Advanced Lung Cancer: A Systematic Review and Meta-Analysis.


ABSTRACT: Lung cancer is the leading cause of cancer-related deaths worldwide, with poor prognosis in advanced lung cancer patients. Platinum-based chemotherapy has always been a first-line treatment for the majority of advanced lung cancer patients, but its long-term survival benefit is limited. Ipilimumab is an immune drug that targets the CTLA-4 protein in T cells. Therefore, we evaluated the efficacy and safety of adding ipilimumab to simple chemotherapy for patients with advanced lung cancer. We searched literatures in PubMed, Web of Science, EMBASE, the Cochrane Library and cliniclatrials.gov. The primary end points of this assessment were overall survival (OS), progression-free survival (PFS) and immune-related PFS(irPFS) of lung cancer patients. Other end points were objective response rate (ORR), disease control rate (DCR) and safety. The results of this study will be presented by the risk ratio (RR) of the endpoints and the 95% confidence interval (CI) of the various effect sizes. And when the p value is less than 0.05, we think there is a statistical difference. Finally, 6 RCTs and 2,037 patients including 953 with advanced or recurrent non-small cell lung cancer (NSCLC) and 1084 with extensive-disease small-cell lung cancer (ED-SCLC) were identified. Among them, 1089 received immunochemotherapy, and 948 patients received chemotherapy alone. Immunochemotherapy can't improve OS (6months: risk ratio (RR)=0.97 P=0.11; 1year: RR=1.05 P=0.36), ORR (RR=1.00 P=0.95) and DCR (RR=0.92, 95%CI 0.85-1.00, P=0.04) of patients with lung cancer compared to pure chemotherapy, but it can improve the PFS (6months: RR=1.16 P=0.02; 1year: RR=1.39 P=0.02) and 6months-irPFS(RR=1.60 P=0.004). However, due to the addition of ipilimumab, the immune-related toxicities are more apparent in immunochemotherapy group.

SUBMITTER: Zhang H 

PROVIDER: S-EPMC6277638 | BioStudies | 2018-01-01T00:00:00Z

REPOSITORIES: biostudies

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