Although we first found the diagnostic and prognostic value of CXCL1 in COAD (rather than colorectal cancer), there were still some shortcomings in this study: a) There was imperfectness in the clinical information of COAD patients from TCGA database, and some important information such as tumor size, histological classification, degree of differentiation had not been provided. The gene discussed is CXCL1; the disease is colorectal cancer.