Besides, H3K79me1/2/3 levels were also significantly descreased after DOT1L silencing or inhibition in the xenografts of CRC cells in vivo experiments (Fig. 7 i, j). Therefore, our data revealed that DOT1L silencing might inhibit the transcriptional expression of c-Myc by inhibiting methylation of H3K79. The gene discussed is MYC; the disease is colorectal carcinoma.