PMID- 16523260 OWN - NLM STAT- MEDLINE DCOM- 20070104 LR - 20181113 IS - 0945-6317 (Print) IS - 0945-6317 (Linking) VI - 449 IP - 3 DP - 2006 Sep TI - Anatomic site-specific patterns of gene copy number gains in skin, mucosal, and uveal melanomas detected by fluorescence in situ hybridization. PG - 328-33 AB - To assess the differences between melanomas of different location and different etiology, 372 malignant melanomas were brought in a tissue microarray format. The collection included 23 acral and 118 non-acral skin melanomas, 9 mucosal melanomas, 100 uveal melanomas, and 122 melanoma metastases. Fluorescence in situ hybridization (FISH) was used to assess copy number changes of the cyclin D1 (CCND1), MDM2, c-myc (MYC), and HER2 genes. FISH analysis revealed distinct differences between melanomas from different locations. CCND1 amplifications were detected in skin melanomas from sites with chronic sun exposure (6 of 32 cases), acral melanomas (4 of 17 cases), and mucosal melanomas (one of ten cases) but not in uveal melanomas. High-level MDM2 amplifications were exclusively present in acral melanomas (2 of 19 cases). MYC copy number gains were detected in 32 of 71 uveal melanomas, five of eight mucosal melanomas, and 6 of 67 melanomas from sites with intermittent sun exposure but not in acral melanomas nor melanomas from sites with chronic sun exposure. Alterations of the MYC gene were associated with advanced tumor stage. There were no high-level HER2 amplifications. Site-specific genetic and epigenetic features may impact the response of melanomas to various anti-cancer drugs and should be considered in future studies on the molecular pathogenesis of malignant melanomas. FAU - Glatz-Krieger, Katharina AU - Glatz-Krieger K AD - Institute for Pathology, University of Basel, Schoenbeinstrasse 40, CH-4031, Basel, Switzerland. Katharina.Glatz@unibas.ch FAU - Pache, Mona AU - Pache M FAU - Tapia, Coya AU - Tapia C FAU - Fuchs, Alain AU - Fuchs A FAU - Savic, Spasenija AU - Savic S FAU - Glatz, Dieter AU - Glatz D FAU - Mihatsch, Michael AU - Mihatsch M FAU - Meyer, Peter AU - Meyer P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060308 PL - Germany TA - Virchows Arch JT - Virchows Archiv : an international journal of pathology JID - 9423843 RN - 0 (Biomarkers, Tumor) RN - 0 (DNA, Neoplasm) SB - IM MH - Biomarkers, Tumor/genetics/metabolism MH - DNA, Neoplasm/analysis MH - Gene Amplification MH - *Gene Dosage MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Lymph Nodes/pathology MH - Melanoma/*genetics/metabolism/secondary MH - Mucous Membrane/metabolism/*pathology MH - Skin Neoplasms/*genetics/metabolism/pathology MH - Tissue Array Analysis MH - Uveal Neoplasms/*genetics/metabolism/pathology EDAT- 2006/03/09 09:00 MHDA- 2007/01/05 09:00 CRDT- 2006/03/09 09:00 PHST- 2005/12/21 00:00 [received] PHST- 2006/01/25 00:00 [accepted] PHST- 2006/03/09 09:00 [pubmed] PHST- 2007/01/05 09:00 [medline] PHST- 2006/03/09 09:00 [entrez] AID - 10.1007/s00428-006-0167-8 [doi] PST - ppublish SO - Virchows Arch. 2006 Sep;449(3):328-33. doi: 10.1007/s00428-006-0167-8. Epub 2006 Mar 8.