PMID- 24374978 OWN - NLM STAT- MEDLINE DCOM- 20140502 LR - 20140307 IS - 1096-9896 (Electronic) IS - 0022-3417 (Linking) VI - 232 IP - 5 DP - 2014 Apr TI - A novel SERPINE1-FOSB fusion gene results in transcriptional up-regulation of FOSB in pseudomyogenic haemangioendothelioma. PG - 534-40 LID - 10.1002/path.4322 [doi] AB - Pseudomyogenic haemangioendothelioma (PHE) is an intermediate malignant vascular soft tissue tumour primarily affecting children and young adults. The molecular basis of this neoplasm is unknown. We here used chromosome banding analysis, fluorescence in situ hybridization (FISH), mRNA sequencing, RT-PCR and quantitative real-time PCR on a series of morphologically well-characterized PHEs to show that a balanced translocation, t(7;19)(q22;q13), detected as the sole cytogenetic aberration in two cases, results in fusion of the SERPINE1 and FOSB genes. This translocation has not been observed in any other bone or soft tissue tumour. Interphase FISH on sections from eight additional PHEs identified the same SERPINE1-FOSB fusion in all cases. The role of SERPINE1, which is highly expressed in vascular cells, in this gene fusion is probably to provide a strong promoter for FOSB, which was found to be expressed at higher levels in PHEs than in other soft tissue tumours. FOSB encodes a transcription factor belonging to the FOS family of proteins, which, together with members of the JUN family of transcription factors, are major components of the activating protein 1 (AP-1) complex. Further studies are needed to understand the cellular impact of the aberrant expression of the FOSB gene, but as the t(7;19) resulting in the SERPINE1-FOSB fusion seems to be pathognomonic for PHE, FISH or RT-PCR could be useful for differential diagnostic purposes. CI - Copyright (c) 2013 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd. FAU - Walther, Charles AU - Walther C AD - Department of Clinical Genetics, University and Regional Laboratories, Skane University Hospital, Lund University, Sweden; Department of Pathology, University and Regional Laboratories, Skane University Hospital, Lund, Sweden. FAU - Tayebwa, Johnbosco AU - Tayebwa J FAU - Lilljebjorn, Henrik AU - Lilljebjorn H FAU - Magnusson, Linda AU - Magnusson L FAU - Nilsson, Jenny AU - Nilsson J FAU - von Steyern, Fredrik Vult AU - von Steyern FV FAU - Ora, Ingrid AU - Ora I FAU - Domanski, Henryk A AU - Domanski HA FAU - Fioretos, Thoas AU - Fioretos T FAU - Nord, Karolin H AU - Nord KH FAU - Fletcher, Christopher D M AU - Fletcher CD FAU - Mertens, Fredrik AU - Mertens F LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140129 PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (FOSB protein, human) RN - 0 (Plasminogen Activator Inhibitor 1) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 0 (RNA, Messenger) RN - 0 (SERPINE1 protein, human) SB - IM MH - Adolescent MH - Bone Neoplasms/enzymology/*genetics/pathology MH - Chromosome Banding MH - Chromosomes, Human, Pair 22 MH - Chromosomes, Human, Pair 7 MH - Female MH - *Gene Expression Regulation, Neoplastic MH - *Gene Fusion MH - Genetic Testing/methods MH - Hemangioendothelioma, Epithelioid/enzymology/*genetics/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Plasminogen Activator Inhibitor 1/*genetics MH - Predictive Value of Tests MH - Proto-Oncogene Proteins c-fos/*genetics MH - RNA, Messenger/analysis MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sequence Analysis, RNA MH - Soft Tissue Neoplasms/enzymology/*genetics/pathology MH - *Transcription, Genetic MH - Translocation, Genetic MH - Up-Regulation OTO - NOTNLM OT - FOSB OT - RNA sequencing OT - SERPINE1 OT - gene fusion OT - paediatric OT - pseudomyogenic haemangioendothelioma OT - sarcoma EDAT- 2014/01/01 06:00 MHDA- 2014/05/03 06:00 CRDT- 2013/12/31 06:00 PHST- 2013/10/21 00:00 [received] PHST- 2013/12/03 00:00 [revised] PHST- 2013/12/20 00:00 [accepted] PHST- 2013/12/31 06:00 [entrez] PHST- 2014/01/01 06:00 [pubmed] PHST- 2014/05/03 06:00 [medline] AID - 10.1002/path.4322 [doi] PST - ppublish SO - J Pathol. 2014 Apr;232(5):534-40. doi: 10.1002/path.4322. Epub 2014 Jan 29.