BACKGROUND: In patients with cutaneous melanoma, early age at disease onset is characteristic in familial cases and in individuals with multiple primary melanomas. Both subsets of patients with melanoma are at risk for harboring germline CDKN2A or CDK4 mutations. OBJECTIVE: We set out to prospectively determine the prevalence of CDKN2A and CDK4 mutations in a group of young patients with melanoma. DESIGN: We prospectively screened 913 patients over a 6-month period and identified 519 patients with invasive melanomas. We invited 172 patients with melanoma who were younger than 40 years to participate in the study, and 49 patients consented and donated peripheral blood samples. Forty-nine percent (n = 24) of our patients developed cutaneous melanoma before the age of 30 years. SETTING: A melanoma clinic in the Boston, Mass, area. MAIN OUTCOME MEASURE: We used a combination of single-strand conformation analysis and direct sequencing of samples of peripheral blood leukocyte DNA to search for mutations in exons 1alpha, 1beta, 2, and 3 of CDKN2A and in exon 2 of CDK4. RESULTS: The mean and median ages at diagnosis in our group were 30 and 32 years, respectively. Among a group of 49 patients, we detected 1 (2%; 95% confidence interval, 0.07%-10.8%) Met 53 Ile CDKN2A mutation, which was found in a patient with a strong family history of melanoma. This alteration has been previously shown to impair p16 function. One patient had an Ala 148 Thr change in CDKN2A, which has also been shown to be a polymorphism. We also detected a sequence polymorphism (in the 3' untranslated region [3'UTR] of CDKN2A) in 27% of our patients. A similar incidence of this 3'UTR polymorphism was observed in a control population. We found no CDK4 mutations. CONCLUSIONS: Germline CDKN2A and CDK4 mutations are not common in patients who develop melanoma at an early age. This finding contrasts with other cancer-predisposition syndromes, in which there is an increased incidence of germline mutations among young patients. Selection of patients with melanoma for genetic testing based solely on age at onset may not be warranted at the current time.
BACKGROUND: In patients with cutaneous melanoma, early age at disease onset is characteristic in familial cases and in individuals with multiple primary melanomas. Both subsets of patients with melanoma are at risk for harboring germline CDKN2A or CDK4 mutations. OBJECTIVE: We set out to prospectively determine the prevalence of CDKN2A and CDK4 mutations in a group of young patients with melanoma. DESIGN: We prospectively screened 913 patients over a 6-month period and identified 519 patients with invasive melanomas. We invited 172 patients with melanoma who were younger than 40 years to participate in the study, and 49 patients consented and donated peripheral blood samples. Forty-nine percent (n = 24) of our patients developed cutaneous melanoma before the age of 30 years. SETTING: A melanoma clinic in the Boston, Mass, area. MAIN OUTCOME MEASURE: We used a combination of single-strand conformation analysis and direct sequencing of samples of peripheral blood leukocyte DNA to search for mutations in exons 1alpha, 1beta, 2, and 3 of CDKN2A and in exon 2 of CDK4. RESULTS: The mean and median ages at diagnosis in our group were 30 and 32 years, respectively. Among a group of 49 patients, we detected 1 (2%; 95% confidence interval, 0.07%-10.8%) Met 53 IleCDKN2A mutation, which was found in a patient with a strong family history of melanoma. This alteration has been previously shown to impair p16 function. One patient had an Ala 148 Thr change in CDKN2A, which has also been shown to be a polymorphism. We also detected a sequence polymorphism (in the 3' untranslated region [3'UTR] of CDKN2A) in 27% of our patients. A similar incidence of this 3'UTR polymorphism was observed in a control population. We found no CDK4 mutations. CONCLUSIONS: Germline CDKN2A and CDK4 mutations are not common in patients who develop melanoma at an early age. This finding contrasts with other cancer-predisposition syndromes, in which there is an increased incidence of germline mutations among young patients. Selection of patients with melanoma for genetic testing based solely on age at onset may not be warranted at the current time.
Authors: Marko Hocevar; Magdalena Avbelj; Barbara Perić; Janez Zgajnar; Nikola Besić; Tadej Battelino Journal: Croat Med J Date: 2006-12 Impact factor: 1.351
Authors: Miriam Potrony; Celia Badenas; Paula Aguilera; Joan Anton Puig-Butille; Cristina Carrera; Josep Malvehy; Susana Puig Journal: Ann Transl Med Date: 2015-09
Authors: James G Rheinwald; William C Hahn; Matthew R Ramsey; Jenny Y Wu; Zongyou Guo; Hensin Tsao; Michele De Luca; Caterina Catricalà; Kathleen M O'Toole Journal: Mol Cell Biol Date: 2002-07 Impact factor: 4.272
Authors: Sancy A Leachman; John Carucci; Wendy Kohlmann; Kimberly C Banks; Maryam M Asgari; Wilma Bergman; Giovanna Bianchi-Scarrà; Teresa Brentnall; Brigitte Bressac-de Paillerets; William Bruno; Clara Curiel-Lewandrowski; Femke A de Snoo; Tadeusz Debniak; Marie-France Demierre; David Elder; Alisa M Goldstein; Jane Grant-Kels; Allan C Halpern; Christian Ingvar; Richard F Kefford; Julie Lang; Rona M MacKie; Graham J Mann; Kurt Mueller; Julia Newton-Bishop; Håkan Olsson; Gloria M Petersen; Susana Puig; Darrell Rigel; Susan M Swetter; Margaret A Tucker; Emanuel Yakobson; John A Zitelli; Hensin Tsao Journal: J Am Acad Dermatol Date: 2009-10 Impact factor: 11.527
Authors: Giuseppe Palmieri; Mariaelena Capone; Maria Libera Ascierto; Giusy Gentilcore; David F Stroncek; Milena Casula; Maria Cristina Sini; Marco Palla; Nicola Mozzillo; Paolo A Ascierto Journal: J Transl Med Date: 2009-10-14 Impact factor: 5.531