In this issue of the Journal, Monzon et al. report the occurrenceof germ-line mutations of the CDKN2A gene in patients with multipleprimary melanomas.1CDKN2A, a tumor-suppressor gene, has a centralrole in regulating cell division.
The loss of function of tumor-suppressor genes is a key eventin the multistep process that transforms a normal cell intoa cancer cell. In normal cells, the proteins that arise fromthese genes participate in diverse biologic processes. Someproteins, such as the p53 protein, protect the cell from geneticdamage, and their loss leads to the characteristic genomic instabilityand . . . [Full Text of this Article]
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