Thirteen genes (BUB1B, KIF20A, MCM2, CEP55, MTHFD2, FOXM1, PBK, CDKN2A, PTX3, RACGAP1, MEOX1, UBE2C, IDH2) were associated with the OS and PFS of ovarian epithelial cancer patients (Fig. 3d). The gene discussed is IDH2; the disease is ovarian carcinoma.