are a physically and functionally diverse set of genes, and as a result, their protein products have pleiotropic effects on a variety of intricate regulatory cascades within the cell.

Since the 1970s, dozens of oncogenes have been identified in human cancer. Many cancer drugs target the proteins encoded by oncogenes. The resultant protein encoded by an oncogene is termed oncoprotein. Oncogenes play an important role in the regulation or synthesis of proteins