PMID- 25231439 OWN - NLM STAT- MEDLINE DCOM- 20150723 LR - 20161214 IS - 1098-2264 (Electronic) IS - 1045-2257 (Linking) VI - 54 IP - 2 DP - 2015 Feb TI - Array CGH analysis identifies two distinct subgroups of primary angiosarcoma of bone. PG - 72-81 LID - 10.1002/gcc.22219 [doi] AB - Molecular genetic studies on vascular tumors are rare. Recently, possible involvement of MYC and KDR has been documented in a subset of angiosarcomas of soft tissue. We performed a cytogenetic analysis of primary angiosarcomas of bone (n = 13) and soft tissue (n = 5) using high density array-comparative genomic hybridization (array-CGH). Regions of interest were validated by fluorescence in situ hybridization (FISH). Antibodies for candidate genes (SKI, MYC, KDR, and MAPK9) were selected and immunohistochemistry was performed. Six angiosarcomas of bone and four angiosarcomas of soft tissue showed chromosomal losses, gains, and high level amplifications. Cluster analysis identified two groups: a group with a complex genetic profile and a group with only few genetic aberrations. Five regions of interest were selected, which were located at chromosome bands 1p36.23, 2q32-34, 5q35, 8q24, and 17q21.32-24.2. Interphase FISH confirmed the high-level amplifications. Immunohistochemical analysis showed high expression of MYC (16/60), MAPK9 (63/69), and SKI (52/62). There were no differences between the two groups with regards to location, immunohistochemical expression nor survival. In summary, we identified two subgroups of angiosarcoma: those with few or no gross aberrations and those which show numerous genetic aberrations consisting of chromosomal losses, gains and high level amplifications or complex aberrations. The most common finding was amplification of 2q and 17q in both angiosarcoma of bone and soft tissue, suggesting overlap in tumorigenesis irrespective of their location. We show MYC amplification in primary angiosarcoma indicating this is not entirely specific for radiation-induced angiosarcoma. CI - (c) 2014 Wiley Periodicals, Inc. FAU - Verbeke, Sofie L J AU - Verbeke SL AD - Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands. FAU - de Jong, Danielle AU - de Jong D FAU - Bertoni, Franco AU - Bertoni F FAU - Sciot, Raf AU - Sciot R FAU - Antonescu, Cristina R AU - Antonescu CR FAU - Szuhai, Karoly AU - Szuhai K FAU - Bovee, Judith V M G AU - Bovee JV LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140918 PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (DNA-Binding Proteins) RN - 0 (MAP9 protein, human) RN - 0 (MYC protein, human) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 126648-96-2 (SKI protein, human) SB - IM MH - Adult MH - Aged MH - Bone Neoplasms/*genetics MH - Chromosome Aberrations MH - Chromosomes, Human/*genetics MH - Comparative Genomic Hybridization MH - DNA-Binding Proteins/genetics MH - Female MH - Hemangiosarcoma/*genetics MH - Humans MH - Male MH - Microtubule-Associated Proteins/genetics MH - Middle Aged MH - Proto-Oncogene Proteins/genetics MH - Proto-Oncogene Proteins c-myc/genetics EDAT- 2014/09/19 06:00 MHDA- 2015/07/24 06:00 CRDT- 2014/09/19 06:00 PHST- 2014/06/03 00:00 [received] PHST- 2014/09/01 00:00 [accepted] PHST- 2014/09/19 06:00 [entrez] PHST- 2014/09/19 06:00 [pubmed] PHST- 2015/07/24 06:00 [medline] AID - 10.1002/gcc.22219 [doi] PST - ppublish SO - Genes Chromosomes Cancer. 2015 Feb;54(2):72-81. doi: 10.1002/gcc.22219. Epub 2014 Sep 18.