ATF1 and colorectal carcinoma: Another variant within 12q13 loci rs1129406 (12q13; OR = 1.11 P = 8.3 × 10−9, EAF = 0.41) is located within a splice region of ATF1. The rs3184504 association highlights a novel CRC risk locus (Table 1, Supplementary Figure 8).