*P-value refers to the ANOVA-test. **P-value refers to the student's t test. SD: Standard deviation, BMI: Body mass index, PCOS: Polycystic ovarian syndrome, OCP: Oral contraceptive pills, ER: Estrogen receptor, HER2: Human epidermal growth factor receptor 2. The gene discussed is ERBB2; the disease is polycystic ovary syndrome.