We speculate that these differentially expressed claudins genes (CLDN2, CLDN1, CLDN14, CLDN16, CLDN18, CLDN9, CLDN12, CLDN6, CLDN8, CLDN23, CLDN5, CLDN11, CLDN7, and CLDN15) have diagnostic value in colon cancer. Here, CLDN12 is linked to colonic neoplasm.