Among the 6 genes, only the expression of gene CHRDL1 was found to be in linear regression with the BMI index in PCOS patients (p = 0.0358, Y = 6.460*X - 17.51) (Figure 3B), but such difference was not found in the healthy controls (p = 0.2487). The gene discussed is CHRDL1; the disease is polycystic ovary syndrome.