ITK and hepatocellular carcinoma: The TEC family is the second largest non-receptor tyrosine kinase family and is comprised of five proteins: the bone-marrow expressed kinase (BMX), the interleukin-2-inducible T-cell kinase (ITK), the tyrosine kinase expressed in hepatocellular carcinoma (TEC), the tyrosine kinase protein (TXK) and the BTK [2].