Concerning the adipocytokine values in normal-weight women, the data show profound differences between the healthy women and women with breast cancer groups, with lower values observed in the control group for C-peptide, GIP, GLP-1, ghrelin, glucagon insulin, HOMA-IR, leptin, and adiponectin (p < 0.05) and the highest values for PAI-1. This evidence concerns the gene SERPINE1 and breast cancer.