Cyclin A is a member of the cyclin family, a group of proteins that function in regulating progression through the cell cycle.[1] The stages that a cell passes through that culminate in its division and replication are collectively known as the cell cycle[2] Since the successful division and replication of a cell is essential for its survival, the cell cycle is tightly regulated by several components to ensure the efficient and error-free progression through the cell cycle. One such regulatory component is cyclin A which plays a role in the regulation of two different cell cycle stages.[1][3]