TNF and breast cancer: No association between the TNF-α-308 polymorphism and BC risk was found in Caucasians (OR = 1.06, 95% CI: 0.88–1.27, P = 0.555; I2 = 80.7%, Phet < 0.001), Asians (OR = 1.07, 95% CI: 0.58–1.96, P = 0.826; I2 = 88.7%, Phet < 0.001) or all subjects (OR = 1.04, 95% CI: 0.87–1.24, P = 0.653; I2 = 84.6%, Phet < 0.001) (Table 3).