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Exp Clin Endocrinol Diabetes 2012; 120(04): 217-223
DOI: 10.1055/s-0031-1297969
Article
© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York

Diabetes Mellitus and Incidence and Mortality of Gastric Cancer: A Meta-Analysis

Authors

  • T. Tian   *

    1   Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China

  • L. Q. Zhang   *

    2   Department of Medical Oncology, the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China

  • X. H. Ma

    1   Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China

  • J. N. Zhou

    3   Department of General Surgery, the Affiliated Jiangsu Cancer Hospital of Nanjing Medical University, Nanjing, China

  • J. Shen

    1   Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
Further Information

Publication History

received 09 July 2011
first decision 06 November 2011

accepted 23 November 2011

Publication Date:
20 December 2011 (online)

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Abstract

Aims:

Epidemiologic studies have examined the possible associations between diabetes mellitus (DM) and gastric cancer (GC), but the results are inconclusive. We conducted a meta-analysis to assess the evidence regarding the associations between diabetes and incidences of, or mortality from, gastric cancer.

Methods:

PubMed, Embase and Web of Science were searched up to Oct 20, 2011. We identified studies that included effects estimates with 95% confidence intervals (CIs) of the associations between GC and diabetes. Summary RRs for the GC incidence and mortality were calculated using random-effects model; subgroup analyses were also performed. Heterogeneity among studies was examined using Q and I2 statistics.

Results:

A total of 7 case-control and 18 cohort studies met the inclusion criteria. The summary RR showed a slightly statistical link between history of DM and GC incidence (RR=1.11, 95% CI: 1.00–1.24, p=0.045, I2=79.5%). In the subgroup analyses, a positive association was noted among the studies conducted in Asia (summary RR=1.19, 95% CI: 1.07–1.32, I2=29.8%). Additionally, slight associations between DM and GC were observed by pooling the data of type 2 DM, cohort studies and the studies controlling more confounders, respectively. Furthermore, mortality from GC with diabetes was increased compared with individuals without diabetes (summary RR=1.29, 95% CI: 1.04–1.59). No publication bias was found.

Conclusion:

Individuals with diabetes have an increased risk of developing gastric cancer, and are positively associated with gastric cancer mortality. Large better-designed cohort studies are needed to verify this conclusion.

Key words

diabetes mellitus - gastric neoplasm - epidemiology - meta-analysis
* 

* The first 2 authors contributed equally to this work.