They are called oncogenes.

The best place that one can learn more about oncogenes is the American Cancer Society's official website. The site has a page dedicated to oncogenes and has a list of answers to common questions asked about the gene.

Proto-oncogenes stop cells dividing too often. When a mutation occurs to proto-oncogenes this is when cancer can occur, as there is then no hay-flick limit (normally cells have a limit to how many times then can divide) cells are able to replicate uncontrollably.

oncogenes

Manjusri Das has written:

'Selected abstracts on oncogenes and epidermal growth factor receptors' -- subject(s): Abstracts, Tumors, Oncogenes, Epidermis