PLOD1 and polycystic ovary syndrome: Initial blood sampling revealed decreased serum zinc concentration in the PCOS group, alongside elevated levels of testosterone (T), luteinizing hormone (LH), alanine aminotransferase (ALT), aspartate aminotransferase (AST), triglycerides (TG), total cholesterol (TC), blood glucose, fasting insulin, and oral glucose tolerance test (OGTT) values.