PMID- 29695401 OWN - NLM STAT- MEDLINE DCOM- 20181026 LR - 20181114 IS - 1790-6245 (Electronic) IS - 1109-6535 (Print) IS - 1109-6535 (Linking) VI - 15 IP - 3 DP - 2018 May-Jun TI - Cytogenetics of Spindle Cell/Pleomorphic Lipomas: Karyotyping and FISH Analysis of 31 Tumors. PG - 193-200 AB - BACKGROUND: Spindle cell/pleomorphic lipomas are benign tumors. Here, we present our cytogenetic data on 31 such tumors. MATERIALS AND METHODS: G-banding chromosome analysis and (in selected cases) fluorescence in situ hybridization (FISH) using probes for FOXO1, RB1, and HMGA2 were performed. RESULTS: Rearrangements of chromosome 13 were found in 58% of tumors. Chromosomes 6, 1, 12, and 11 were also involved in 42%, 26%, 26%, and 23% of tumors, respectively. FISH analysis showed heterozygous deletion of RB1 in seven samples with chromosome 13 aberrations. In four of them, FOXO1 was also deleted. In two tumors with 12q15 rearrangements, FISH confirmed that HMGA2 was targeted. CONCLUSION: Structural rearrangements of 13q or losses of an entire chromosome 13 are the most common cytogenetic aberrations in spindle cell/pleomorphic lipomas. However, cytogenetic variation exists similarly to what is found in other lipomas, suggesting that various pathways may be responsible for tumorigenesis. CI - Copyright(c) 2018, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. FAU - Panagopoulos, Ioannis AU - Panagopoulos I AD - Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway ioannis.panagopoulos@rr-research.no. FAU - Gorunova, Ludmila AU - Gorunova L AD - Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Lund-Iversen, Marius AU - Lund-Iversen M AD - Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Andersen, Kristin AU - Andersen K AD - Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Andersen, Hege Kilen AU - Andersen HK AD - Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Lobmaier, Ingvild AU - Lobmaier I AD - Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Bjerkehagen, Bodil AU - Bjerkehagen B AD - Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. FAU - Heim, Sverre AU - Heim S AD - Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. AD - Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway. LA - eng PT - Journal Article PL - Greece TA - Cancer Genomics Proteomics JT - Cancer genomics & proteomics JID - 101188791 RN - 0 (FOXO1 protein, human) RN - 0 (Forkhead Box Protein O1) RN - 0 (HMGA2 Protein) RN - 0 (Neoplasm Proteins) RN - 0 (RB1 protein, human) RN - 0 (Retinoblastoma Binding Proteins) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Chromosome Aberrations MH - Chromosome Banding MH - Chromosomes, Human, Pair 13/*genetics MH - Cytogenetic Analysis MH - Female MH - Forkhead Box Protein O1/genetics MH - HMGA2 Protein/genetics MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Karyotyping/*methods MH - Lipoma/*genetics/pathology MH - Male MH - Middle Aged MH - Neoplasm Proteins/*genetics MH - Nevus, Spindle Cell/*genetics/pathology MH - Retinoblastoma Binding Proteins/genetics MH - Ubiquitin-Protein Ligases/genetics PMC - PMC5971011 OTO - NOTNLM OT - FOXO1 gene OT - HMGA2 gene OT - RB1 gene OT - Spindle cell lipomas OT - chromosome 12 OT - chromosome 13 OT - cytogenetics OT - pleomorphic lipomas EDAT- 2018/04/27 06:00 MHDA- 2018/10/27 06:00 PMCR- 2018/05/03 CRDT- 2018/04/27 06:00 PHST- 2017/12/29 00:00 [received] PHST- 2018/02/17 00:00 [revised] PHST- 2018/02/21 00:00 [accepted] PHST- 2018/04/27 06:00 [entrez] PHST- 2018/04/27 06:00 [pubmed] PHST- 2018/10/27 06:00 [medline] PHST- 2018/05/03 00:00 [pmc-release] AID - 15/3/193 [pii] AID - 10.21873/cgp.20077 [doi] PST - ppublish SO - Cancer Genomics Proteomics. 2018 May-Jun;15(3):193-200. doi: 10.21873/cgp.20077.