Journal
CANCER CELL
Volume 34, Issue 1, Pages 45-+Publisher
CELL PRESS
DOI: 10.1016/j.ccell.2018.06.005
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Funding
- NIH [K22 CA17997, T32 CA177555]
- PhRMA Foundation
- Dermatology Foundation
- Melanoma Research Foundation
- Program in Breakthrough Biomedical Research at UCSF
- NCI [1R35CA220481]
- Individual Investigator Award of the Melanoma Research Alliance
- Terry Patters Memorial Foundation
- NATIONAL CANCER INSTITUTE [R35CA220481, T32CA177555, K22CA217997] Funding Source: NIH RePORTER
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We elucidated genomic and transcriptomic changes that accompany the evolution of melanoma from premalignant lesions by sequencing DNA and RNA from primary melanomas and their adjacent precursors, as well as matched primary tumors and regional metastases. In total, we analyzed 230 histopathologically distinct areas of melanocytic neoplasia from 82 patients. Somatic alterations sequentially induced mitogen-activated protein kinase (MAPK) pathway activation, upregulation of telomerase, modulation of the chromatin landscape, G1/S checkpoint override, ramp-up of MAPK signaling, disruption of the p53 pathway, and activation of the PI3K pathway; no mutations were specifically associated with metastatic progression, as these pathways were perturbed during the evolution of primary melanomas. UV radiation-induced point mutations steadily increased until melanoma invasion, at which point copy-number alterations also became prevalent.
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