Fig. 4a-g showed that the aberrant expression of the CRABP2 protein was found in the tumor cells of SeCC cases (n = 15/16, 93.75 %) with moderate to strong intensity, whereas the CRABP2 protein was only mild-to-moderate weak expression in the control cases (Fig. 4h, i). This evidence concerns the gene CRABP2 and neoplasm.