Title |
Cancer systems biology of TCGA SKCM: Efficient detection of genomic drivers in melanoma
|
---|---|
Published in |
Scientific Reports, January 2015
|
DOI | 10.1038/srep07857 |
Pubmed ID | |
Authors |
Jian Guan, Rohit Gupta, Fabian V. Filipp |
Abstract |
We characterized the mutational landscape of human skin cutaneous melanoma (SKCM) using data obtained from The Cancer Genome Atlas (TCGA) project. We analyzed next-generation sequencing data of somatic copy number alterations and somatic mutations in 303 metastatic melanomas. We were able to confirm preeminent drivers of melanoma as well as identify new melanoma genes. The TCGA SKCM study confirmed a dominance of somatic BRAF mutations in 50% of patients. The mutational burden of melanoma patients is an order of magnitude higher than of other TCGA cohorts. A multi-step filter enriched somatic mutations while accounting for recurrence, conservation, and basal rate. Thus, this filter can serve as a paradigm for analysis of genome-wide next-generation sequencing data of large cohorts with a high mutational burden. Analysis of TCGA melanoma data using such a multi-step filter discovered novel and statistically significant potential melanoma driver genes. In the context of the Pan-Cancer study we report a detailed analysis of the mutational landscape of BRAF and other drivers across cancer tissues. Integrated analysis of somatic mutations, somatic copy number alterations, low pass copy numbers, and gene expression of the melanogenesis pathway shows coordination of proliferative events by Gs-protein and cyclin signaling at a systems level. |
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Country | Count | As % |
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United States | 7 | 27% |
United Kingdom | 5 | 19% |
Spain | 3 | 12% |
Belgium | 1 | 4% |
Brazil | 1 | 4% |
Unknown | 9 | 35% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 18 | 69% |
Science communicators (journalists, bloggers, editors) | 3 | 12% |
Scientists | 3 | 12% |
Practitioners (doctors, other healthcare professionals) | 2 | 8% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 4 | 3% |
France | 2 | 1% |
Hungary | 1 | <1% |
Sweden | 1 | <1% |
Germany | 1 | <1% |
Denmark | 1 | <1% |
Belgium | 1 | <1% |
Unknown | 125 | 92% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 36 | 26% |
Researcher | 30 | 22% |
Student > Master | 19 | 14% |
Student > Doctoral Student | 9 | 7% |
Student > Bachelor | 7 | 5% |
Other | 19 | 14% |
Unknown | 16 | 12% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 38 | 28% |
Medicine and Dentistry | 19 | 14% |
Computer Science | 9 | 7% |
Immunology and Microbiology | 2 | 1% |
Other | 10 | 7% |
Unknown | 20 | 15% |