Journal ArticleDOI
Distinct Sets of Genetic Alterations in Melanoma
John A. Curtin,Jane Fridlyand,Toshiro Kageshita,Hetal N. Patel,Klaus J. Busam,Heinz Kutzner,Kwang Hyun Cho,Setsuya Aiba,Eva B. Bröcker,Philip E. LeBoit,Daniel Pinkel,Boris C. Bastian +11 more
TLDR
The genetic alterations identified in melanoma at different sites and with different levels of sun exposure indicate that there are distinct genetic pathways in the development of melanoma and implicate CDK4 and CCND1 as independent oncogenes in melanomas without mutations in BRAF or N-RAS.Abstract:
Background Exposure to ultraviolet light is a major causative factor in melanoma, although the relationship between risk and exposure is complex. We hypothesized that the clinical heterogeneity is explained by genetically distinct types of melanoma with different susceptibility to ultraviolet light. Methods We compared genome-wide alterations in the number of copies of DNA and mutational status of BRAF and N-RAS in 126 melanomas from four groups in which the degree of exposure to ultraviolet light differs: 30 melanomas from skin with chronic sun-induced damage and 40 melanomas from skin without such damage; 36 melanomas from palms, soles, and subungual (acral) sites; and 20 mucosal melanomas. Results We found significant differences in the frequencies of regional changes in the number of copies of DNA and mutation frequencies in BRAF among the four groups of melanomas. Samples could be correctly classified into the four groups with 70 percent accuracy on the basis of the changes in the number of copies of...read more
Citations
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Journal ArticleDOI
BRAF E600 in benign and malignant human tumours
TL;DR: Although BRAFE600 acts as an oncogene in the context of additional genetic lesions, in primary cells it appears to be associated rather with transient stimulation of proliferation, and the implications for therapeutic intervention are discussed.
Journal ArticleDOI
A new understanding in the epidemiology of melanoma
Esther Erdei,Salina M. Torres +1 more
TL;DR: This article describes what is known about the impact of gender, ethnicity and geography on the progression of melanoma and current treatment strategies and the results of recent clinical trials.
Journal ArticleDOI
New insight into BRAF mutations in cancer.
Nathalie Dhomen,Richard Marais +1 more
TL;DR: Genetic profiling and microarray studies have provided insight into the spectrum of melanomas in which BRAF plays a role and also revealed intriguing new data that could be important for the diagnosis and treatment of human cancers.
Journal ArticleDOI
Epigenetic silencing of the PTEN gene in melanoma.
Alireza Mirmohammadsadegh,Alessandra Marini,Sandeep Nambiar,Mohamed Hassan,Andrea Tannapfel,Thomas Ruzicka,Ulrich R. Hengge +6 more
TL;DR: Epigenetic PTEN silencing seems to be a relevant mechanism of inactivating this tumor suppressor gene in melanoma that may promote melanoma development by derepression of the AKT pathway.
Journal ArticleDOI
Human cutaneous melanoma; a review of NRAS and BRAF mutation frequencies in relation to histogenetic subclass and body site
TL;DR: Common alterations of the signal transducing network seem to represent molecular hallmarks of cutaneous melanomas and therefore should continue to strongly stimulate design and testing of targeted molecular interventions.
References
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Mutations of the BRAF gene in human cancer
Helen Davies,Graham R. Bignell,Charles Cox,Philip J. Stephens,Sarah Edkins,S. M. Clegg,Jon W. Teague,Hayley Woffendin,Mathew J. Garnett,William Bottomley,Neil Davis,Ed Dicks,Rebecca Ewing,Yvonne Floyd,Kristian Gray,S. Hall,Rachel Hawes,Jaime Hughes,Vivian Kosmidou,Andrew Menzies,Catherine Mould,Adrian Parker,Claire Stevens,Stephen Watt,Steven Hooper,Rebecca Wilson,Hiran Jayatilake,Barry A. Gusterson,Colin Cooper,Janet Shipley,Darren Hargrave,Kathy Pritchard-Jones,Norman J. Maitland,Georgia Chenevix-Trench,Gregory J. Riggins,Darell D. Bigner,Giuseppe Palmieri,Antonio Cossu,Adrienne M. Flanagan,Andrew G. Nicholson,Judy W. C. Ho,Suet Yi Leung,Siu Tsan Yuen,Barbara L. Weber,Hilliard F. Seigler,Timothy L. Darrow,Hugh Paterson,Richard Marais,Christopher J. Marshall,Richard Wooster,Michael R. Stratton,P. Andrew Futreal +51 more
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Ross Ihaka,Robert Gentleman +1 more
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A new regulatory motif in cell-cycle control causing specific inhibition of cyclin D/CDK4
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Comparison of discrimination methods for the classification of tumors using gene expression data
TL;DR: Different discrimination methods for the classification of tumors based on gene expression data include nearest-neighbor classifiers, linear discriminant analysis, and classification trees, which are applied to datasets from three recently published cancer gene expression studies.
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High resolution analysis of DNA copy number variation using comparative genomic hybridization to microarrays
Daniel Pinkel,Daniel Pinkel,Richard Segraves,Damir Sudar,Steven M. Clark,Ian Poole,David Kowbel,Colin Collins,Wen Lin Kuo,Chira Chen,Ye Zhai,Shanaz H. Dairkee,Britt-Marie Ljung,Joe W. Gray,Joe W. Gray,Donna G. Albertson,Donna G. Albertson,Donna G. Albertson +17 more
TL;DR: The implementation of array CGH is demonstrated to be able to measure copy number with high precision in the human genome, and to analyse clinical specimens by obtaining new information on chromosome 20 aberrations in breast cancer.
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