VPS9D1-AS1, an antisense RNA that is 1,637 nucleotides long, was initially identified as a lncRNA regulated by c-Myc in colon cancer, as reported by Yoshihiro et al. Therefore, it was named lncRNA MYU (c-Myc-upregulated lncRNA) 21. The gene discussed is VPS9D1-AS1; the disease is malignant colon neoplasm.