LEP and neoplasm: Blood count, metabolic parameters (glucose, cholesterol, triglyceride, HbA1c, leptin, insulin), immune globuline levels (IgG, IgA, IgM), tumor markers (CEA, CA15.3), homocystein, TNF‐alpha, c‐peptide, IGF‐1, IGF‐1BP, sex hormone‐binding globulin, and hormone levels (FSH, LH, progesterone, testosterone, E2).