Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz

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SHR Neuro Krebs Kardio Lipid

Gandolfi, G; Longo, C; Moscarella, E; Zalaudek, I; Sancisi, V; Raucci, M; Manzotti, G; Gugnoni, M; Piana, S; Argenziano, G; Ciarrocchi, A.
The extent of whole-genome copy number alterations predicts aggressive features in primary melanomas.
Pigment Cell Melanoma Res. 2016; 29(2):163-175
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Autor/innen der Med Uni Graz:
Zalaudek Iris
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Abstract:
Recent evidence indicates that melanoma comprises distinct types of tumors and suggests that specific morphological features may help predict its clinical behavior. Using a SNP-array approach, we quantified chromosomal copy number alterations (CNA) across the whole genome in 41 primary melanomas and found a high degree of heterogeneity in their genomic asset. Association analysis correlating the number and relative length of CNA with clinical, morphological, and dermoscopic attributes of melanoma revealed that features of aggressiveness were strongly linked to the overall amount of genomic damage. Furthermore, we observed that melanoma progression and survival were mainly affected by a low number of large chromosome losses and a high number of small gains. We identified the alterations most frequently associated with aggressive melanoma, and by integrating our data with publicly available gene expression profiles, we identified five genes which expression was found to be necessary for melanoma cells proliferation. In conclusion, this work provides new evidence that the phenotypic heterogeneity of melanoma reflects a parallel genetic diversity and lays the basis to define novel strategies for a more precise prognostic stratification of patients. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
Find related publications in this database (using NLM MeSH Indexing)
Adult -
Cell Proliferation - genetics
Chromosome Aberrations -
Female -
Genome-Wide Association Study -
Humans -
Male -
Melanoma - diagnosis
Melanoma - genetics
Polymorphism, Single Nucleotide -
Prognosis -

Find related publications in this database (Keywords)
primary melanoma
aggressiveness
copy number alterations
whole-genome SNP array
dermoscopy
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