ecrin-mdr-crcClinical2021colorectal cancerColorectal CancerObservationalhttps://newmdr.ecrin.org/Study/2703382China2ECRIN MDRRecruitingfalseA clinical study of the relationship between SLC12A5, HOXB8, KIFC1 gene polymorphism and colorectal cancer chemotherapy sensitivityInterventions: Chemotherapy observation group:Nil;Non Chemotherapy observation group:Nil Primary outcome(s): Genetic testing;tumor burden;Immune evaluation;Survival time Study Design: Non randomized control2021-02-152703382ChiCTR2100043212