What are the 2 types of cell cycle genes that if mutated cause cancer cells to divide uncontrollably?

The two types of cell cycle genes that, when mutated, can lead to uncontrolled cell division and cancer are oncogenes and tumor suppressor genes. Oncogenes promote cell division and growth; mutations can lead to their overactivity, driving excessive proliferation. In contrast, tumor suppressor genes normally inhibit cell division or promote apoptosis; mutations can inactivate these protective functions, allowing unchecked cellular growth. Both types of mutations disrupt the delicate balance of cell cycle regulation, contributing to cancer development.