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Abstract
Ovarian cancer is the leading cause of cancer-related death in women. This meta-analysis was conducted to evaluate the association of transforming growth factor β receptor I (TβR-I) 6A/9A gene polymorphism with ovarian cancer risk. The association literatures were identified from PubMed and Cochrane Library on 1 October 2013, and eligible reports were recruited and synthesized. Four reports were recruited into this meta-analysis for the association of TβR-I 6A/9A gene polymorphism with ovarian cancer risk. 6A allele and 6A/6A genotype of TβR-I were associated with the ovarian cancer risk (6A: OR = 1.24, 95% CI: 1.02–1.51, p = 0.03; 6A/6A: OR = 2.30, 95% CI: 1.01–5.22, p = 0.05). However, TβR-I 9A/9A genotype was not associated with the risk of ovarian cancer (OR = 0.82, 95% CI: 0.66–1.02, p = 0.08). In conclusion, TβR-I 6A allele and 6A/6A genotype are associated with the ovarian cancer risk. However, more studies should be performed to confirm this relationship in the future.