Melanoma is a form of skin cancer that has a poor prognosis and which is on the rise in Western populations. Melanoma arises from the malignant transformation of pigment-producing cells, melanocytes. The only known environmental risk factor is exposure to ultraviolet (UV) light and in people with fair skin the risk is greatly increased. Melanoma pathogenesis is also driven by genetic factors. Oncogenic NRAS mutations activate both effector pathways Raf-MEK-ERK and PI3K-Akt. The Raf-MEK-ERK pathway may also be activated via mutations in the BRAF gene. The PI3K-Akt pathway may be activated through loss or mutation of the inhibitory tumor suppressor gene PTEN. These mutations arise early during melanoma pathogenesis and are preserved throughout tumor progression. Melanoma development has been shown to be strongly associated with inactivation of the p16INK4a/cyclin dependent kinases 4 and 6/retinoblastoma protein (p16INK4a/CDK4,6/pRb) and p14ARF/human double minute 2/p53 (p14ARF/HMD2/p53) tumor suppressor pathways. MITF and TP53 are implicated in further melanoma progression.
Category
Cancer
Brite
Human diseases [BR:br08402]
Cancers
Skin cancers
H00038 Melanoma
Human diseases in ICD-11 classification [BR:br08403]
02 Neoplasms
Malignant neoplasms, except primary neoplasms of lymphoid, haematopoietic, central nervous system or related tissues
Malignant neoplasms, stated or presumed to be primary, of specified sites, except of lymphoid, haematopoietic, central nervous system or related tissues
Malignant neoplasms of skin
2C30 Melanoma of skin
H00038 Melanoma
Tumor markers [br08442.html]
H00038
Cancer-associated carbohydrates [br08441.html]
H00038
N Engl J Med 355:51-65 (2006) DOI:10.1056/NEJMra052166
Reference
PMID:15468170
Authors
Tsai KY, Tsao H.
Title
The genetics of skin cancer.
Journal
Am J Med Genet C Semin Med Genet 131C:82-92 (2004) DOI:10.1002/ajmg.c.30037
Reference
PMID:17492760 (CDKN2A)
Authors
Kannengiesser C, Dalle S, Leccia MT, Avril MF, Bonadona V, Chompret A, Lasset C, Leroux D, Thomas L, Lesueur F, Lenoir G, Sarasin A, Bressac-de Paillerets B
Title
New founder germline mutations of CDKN2A in melanoma-prone families and multiple primary melanoma development in a patient receiving levodopa treatment.
Journal
Genes Chromosomes Cancer 46:751-60 (2007) DOI:10.1002/gcc.20461
Reference
PMID:15880589 (CDK4)
Authors
Molven A, Grimstvedt MB, Steine SJ, Harland M, Avril MF, Hayward NK, Akslen LA
Title
A large Norwegian family with inherited malignant melanoma, multiple atypical nevi, and CDK4 mutation.
Journal
Genes Chromosomes Cancer 44:10-8 (2005) DOI:10.1002/gcc.20202
Reference
PMID:16809487 (MC1R)
Authors
Landi MT, Bauer J, Pfeiffer RM, Elder DE, Hulley B, Minghetti P, Calista D, Kanetsky PA, Pinkel D, Bastian BC
Title
MC1R germline variants confer risk for BRAF-mutant melanoma.