• Cancer · Nov 2011

    Prognostic influence of metformin as first-line chemotherapy for advanced nonsmall cell lung cancer in patients with type 2 diabetes.

    • Ben-Xu Tan, Wen-Xiu Yao, Jun Ge, Xing-Chen Peng, Xiao-Bo Du, Ru Zhang, Bin Yao, Ke Xie, Long-Hao Li, Hang Dong, Feng Gao, Feng Zhao, Jian-Mei Hou, Jing-Mei Su, and Ji-Yan Liu.
    • Department of Medical Oncology, Cancer Center, the State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.
    • Cancer. 2011 Nov 15; 117 (22): 5103-11.

    BackgroundIt has been reported that antidiabetic drugs affect the risk of cancer and the prognosis of patients with diabetes, but few studies have demonstrated the influence of different antidiabetic agents on outcomes after anticancer therapy among patients with cancer. The objective of this study was to evaluate the influence of the antidiabetic drugs metformin and insulin on the prognosis of patients with advanced nonsmall cell lung cancer (NSCLC) plus type 2 diabetes who received first-line chemotherapy.MethodsData on patients with NSCLC who had diabetes from 5 hospitals in China during January 2004 to March 2009 were reviewed retrospectively. Ninety-nine patients were included in the final analysis. The influence of metformin and insulin on chemotherapy response rates and survival in these patients was evaluated.ResultsChemotherapy with metformin (Group A) produced superior results compared with insulin (Group B) and compared with drugs other than metformin and insulin (Group C) in terms of both progression-free survival (PFS) (8.4 months vs 4.7 months vs 6.4 months, respectively; P = .002) and overall survival (OS) (20.0 months vs 13.1 months vs 13.0 months, respectively; P = .007). Although no significant differences in the response rate (RR) were observed between these 3 groups, when groups B and C (ie, the nonmetformin group) were combined, there was a tendency for better disease control in Group A than that in nonmetformin group. No significant difference in survival was observed between chemotherapy with insulin (Group B) versus other drugs (Group C).ConclusionsThe current data suggested that metformin may improve chemotherapy outcomes and survival for patients who have NSCLC with diabetes.Copyright © 2011 American Cancer Society.

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