When scaled to a 1 unit lowering of ln-fasting GIP concentrations mediated by this variant this represents ORs (95% CIs) of 1.80 (1.48–2.19), 1.94 (1.50–2.52), and 2.17 (1.33–3.54) for overall, luminal A-like, and luminal B HER2 negative-like breast cancer, respectively. This evidence concerns the gene ERBB2 and breast carcinoma.