title: TGFBR1*6A/9A polymorphism and cancer risk: a meta-analysis of 13,662 cases and 14,147 controls.
abstract: Published data on the association between TGFBR1*6A/9A polymorphism and cancer risk are inconclusive. To derive a more precise estimation of the relationship, a meta-analysis was performed. A total of 32 studies including 13,662 cases and 14,147 controls were involved in this meta-analysis. Overall, significantly elevated cancer risks were associated with TGFBR1*6A in all genetic models (for allelic effect: OR = 1.11; 95% CI = 1.03-1.21; for 6A/6A vs. 9A/9A: OR = 1.30; 95% CI = 1.01-1.69; for 9A/6A vs. 9A/9A: OR = 1.08; 95% CI = 1.01-1.15; for dominant model: OR = 1.08; 95% CI = 1.02-1.15; for recessive model: OR = 1.29; 95% CI = 1.00-1.68). In the subgroup analysis by cancer types, significant associations were found in breast cancer (for allelic effect: OR = 1.16; 95% CI = 1.01-1.34) and ovarian cancer (for allelic effect: OR = 1.24; 95% CI = 1.00-1.54; for 6A/6A vs. 9A/9A: OR = 2.34; 95% CI = 1.03-5.33). However, no significant associations were found in colorectal cancer, bladder cancer, prostate cancer and lung cancer for all genetic models. In summary, this meta-analysis suggests that the TGFBR1*6A/9A polymorphism is associated with cancer susceptibility, increasing the risk of breast and ovarian cancer.
authors.affiliation: Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515, China.
authors.forename: Ru-Yan
authors.initials: RY
authors.lastname: Liao
authors.forename: Chen
authors.initials: C
authors.lastname: Mao
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Qiu
authors.forename: Hong
authors.initials: H
authors.lastname: Ding
authors.forename: Qing
authors.initials: Q
authors.lastname: Chen
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Pan
mesh_terms: D016022:Case-Control Studies; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000235:genetics*; D016017:Odds Ratio; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*; D017594:Publication Bias; D000077293:Receptor, Transforming Growth Factor-beta Type I; D018125:Receptors, Transforming Growth Factor beta / Q000235:genetics*
chemical_list: D018125:Receptors, Transforming Growth Factor beta; D017346:Protein Serine-Threonine Kinases; D000077293:Receptor, Transforming Growth Factor-beta Type I; C000625841:TGFBR1 protein, human