Similar to CCHCR1, TCF19 has been associated with diseases, including diabetes [40–42], HBV-related chronic hepatitis B, cirrhosis, hepatocellular carcinoma [43], non-small cell lung cancer [44], squamous cell carcinoma of the head and neck (SCCHN) [45] and colorectal cancer [46]. This evidence concerns the gene TCF19 and diabetes mellitus.