MSI1 and cancer: The reinvestigation of MSI1/2 expression in 18 human cancer transcriptomes (TCGA, The Cancer Genome Atlas; https://cancergenome.nih.gov/, accessed on 30 March 2021) and corresponding normal tissue (TCGA and GTEx; https://gtexportal.org, accessed on 30 March 2021) via the Gepia2 database [58,59] revealed selective expression of MSI1 in some cancer tissues (Figure 2B).