SDC2 and colorectal carcinoma: Notably, all the selected loci in the SDC2 gene (SDC2‐1, SDC2‐3, SDC2‐5, and SDC2‐6) exhibited good performance in diagnosing CRC, with AUC values of 0.953, 0.938, 0.947, and 0.934, respectively (Figure 5d).