When the cohort was divided into KRAS mutant and KRAS wild-type patients, HOXA7 was shown to be an independent prognostic marker in KRAS mutant CRC (P < 0.001, Additional file 1: Table S1) but not in KRAS wild-type CRC (P = 0.575, Additional file 1: Table S2). Here, KRAS is linked to colorectal carcinoma.