KRAS genotypes predict metachronous colorectal cancer distant metastases after radical resections

Objective To explore the relationship between KRAS genotype and metachronous distant metastases in patients with colorectal cancer after radical resections. Methods Patients were analyzed retrospectively with metachronous distant metastases group and non-metastases group. PCR and pyrosequencing were used to detect the genotype of KRAS. Clinicopathological data and the KRAS genotype were analyzed to find the predictor for metachronous distant metastases. Results A total of 186 patients were enrolled in this study: 93 cases in metachronous distant metastases group and 93 cases in non-metastases group. KRAS gene mutation type was significantly associated with preoperative CEA(P=0.015) and metachronous distant metastases (P