NCIt definition : Oncogenes are altered forms of normal cellular genes called proto-oncogene. Many proto-oncogenes
are homologous to viral oncogenes and involved in the control of cell proliferation
or differentiation. Mutations, amplifications or rearrangements of proto-oncogenes
lead to upregulated or deregulated cell growth and allow them to function as oncogenes.;
Alternative definition : NCI-GLOSS: A gene involved in normal cell growth. Mutations (changes) in a proto-oncogene
may cause it to become an oncogene, which can cause the growth of cancer cells.;
Currated CISMeF NLP mapping