In contrast, TG (RR: 1.02, 95% CI: 0.91–1.13, I2: 54.2%, p = 0.79), total cholesterol (TC) (RR: 0.98, 95% CI: 0.90–1.06, I2: 67.2%, p = 0.57), apolipoprotein A (ApoA) (RR: 0.96, 95% CI: 0.70–1.30, I2: 83.5%, p = 0.78) and LDL-C (RR: 0.93, 95% CI: 0.79–1.09, I2: 0%, p = 0.386) were not associated with breast cancer development. This evidence concerns the gene APOA1 and breast carcinoma.