SUV39H1 and head and neck squamous cell carcinoma: Based on the data extracted from The Cancer Genome Atlas (TCGA) database1, KMT1A was also highly expressed in esophageal carcinoma, stomach and esophageal carcinoma, stomach adenocarcinoma, lung squamous cell carcinoma, head and neck squamous cell carcinoma, bladder urothelial carcinoma, and liver hepatocellular carcinoma (Figure 1B).