Proto-oncogenes are likely to mutate and become cancer causing cells.
Mutations (changes) in proto-oncogenes can result in oncogenes that cause cancer cells to grow. Proto-oncogenes are usually genes that help cells grow and divide to form new cells or keep them alive.
When a proto-oncogene is mutated (changed) or has too many copies, it is switched on (activated) at an unexpected time and is called an oncogene.
Proto-oncogenes often encode proteins that stimulate cell division, inhibit cell differentiation, and arrest cell death. All of these processes are important for normal human development and maintenance of tissues and organs.
Before oncogenes mutate, they are called proto-oncogenes and play a role in regulating normal cell division. Cancer can occur when a proto-oncogene mutates, turning it into an oncogene and causing cells to divide and grow uncontrollably.
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