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The effect of metformin on survival of patients with pancreatic cancer: a meta-analysis

Xiaogang Li, Tong Li, Zhiqiang Liu, Shanmiao Gou, Chunyou Wang

Scientific Reports, 2017

74 citations

Abstract

We conducted a meta-analysis to analyse the effect of metformin on survival of pancreatic cancer patients at various stages. We performed a systematic search of PubMed, Embase, Cochrane, and Web of Science to identify all relevant studies. Summary hazard ratios (HR) of survival and 95% confidence intervals (95% CI) were calculated with a fixed or random effects model according to inter-study heterogeneity. Nine retrospective cohort studies and two randomized controlled trials (RCTs) were eligible. There was a significant improvement in survival (HR = 0.86, 95% CI 0.76-0.97; P 0.05), or were excluded (HR = 0.89, 95% CI 0.61-1.31; P > 0.05). This meta-analysis indicated that the effect of metformin does correlate with tumor stage but should be prudently considered given the limited and variable studies performed to data.

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