umls-concept:C0079427 | skos:definition | MSH: Genes that inhibit expression of the tumorigenic phenotype. They are normally involved in holding cellular growth in check. When tumor suppressor genes are inactivated or lost, a barrier to normal proliferation is removed and unregulated growth is possible.,CSP: genes whose loss or deactivation leads to neoplastic transformation; compare with ONCOGENE and PROTOONCOGENE.,NCI: A type of gene that makes a protein called a tumor suppressor protein that helps control cell growth. Mutations (changes in DNA) in antioncogenes may lead to cancer.,NCI: Tumor Suppressor Genes encode proteins whose functions inhibit expression of tumorigenic phenotypes by holding cellular proliferation in check. When inactivated or lost, a barrier to normal proliferation is removed and deregulated growth is possible. (NCI) | lld:umls |