MSH2 and metastatic malignant neoplasm in the lymph nodes: For example, the expression level of MSH2 (Supplementary Figure S2A) was higher in patients with BMI<27, Federation International of Gynecology and Obstetrics (FIGO) grade III (G3), serous carcinoma and lymph node metastasis; The expression level of MSH6 (Supplementary Figure S2B) was higher in patients with age over 60, BMI<27, FIGO stage III, G3, serous carcinoma and lymph node metastasis.