According to the correlation analysis of gene expression levels of NOR, PCOS, POR-Y and POR-A in Table 2, MFN1, MFN2, SMN1, SMN2, PINK1, PARKIN, Humanin and p53 genes showed positive correlations with each other (** r < 0.01). The gene discussed is SMN2; the disease is polycystic ovary syndrome.