In addition, we also noted that DOT1L expression was also downregulated in colon cancers with K-Ras mutations (Fig. 3f), which predicted a better prognosis [52], and upregulated in colon cancers with TP53 and BRAF mutations (Fig. 3g, h and Additional file 1: Figure S3G), which predicted a poorer prognosis [53, 54]. Here, KRAS is linked to malignant colon neoplasm.