Which does not control the cell cycle?
The cell cycle is controlled by specific cyclins, which are proteins that regulate the cell cycle.
Loss of cell cycle control is typically an oncogenic process. For cancer to occur, the cells need to replicate beyond any normal physiological control. To answer your question, one factor that in important in controlling the cell cycle is p53. p53 is a checkpoint control in the G1 phase of the cell cycle. Defects in p53 cause a loss of cell cycle regulation and are considered an oncogenic transformation.