PMID- 22411068 OWN - NLM STAT- MEDLINE DCOM- 20120711 LR - 20230216 IS - 1530-0307 (Electronic) IS - 0023-6837 (Linking) VI - 92 IP - 5 DP - 2012 May TI - FOSL1 as a candidate target gene for 11q12 rearrangements in desmoplastic fibroblastoma. PG - 735-43 LID - 10.1038/labinvest.2012.46 [doi] AB - Desmoplastic fibroblastoma (DF) is a benign fibroblastic/myofibroblastic tumor. Cytogenetic analyses have revealed consistent rearrangement of chromosome band 11q12, strongly suggesting that this region harbors a gene of pathogenetic importance. To identify the target gene of the 11q12 rearrangements, we analyzed six cases diagnosed as DF using chromosome banding, fluorescence in situ hybridization (FISH), single-nucleotide polymorphism array and gene expression approaches. Different structural rearrangements involving 11q12 were found in five of the six cases. Metaphase FISH analyses in two of them mapped the 11q12 breakpoints to an ~20-kb region, harboring FOSL1. Global gene expression profiling followed by quantitative real-time PCR showed that FOSL1 was expressed at higher levels in DF with 11q12 rearrangements than in desmoid-type fibromatoses. Furthermore, FOSL1 was not upregulated in the single case of DF that did not show cytogenetic involvement of 11q12; instead this tumor was found to display a hemizygous loss on 5q, including the APC (adenomatous polyposis coli) locus, raising the possibility that it actually was a misdiagnosed Gardner fibroma. 5'RACE-PCR in two 11q12-positive DF did not identify any fusion transcripts. Thus, in agreement with the finding at chromosome banding analysis that varying translocation partners are involved in the 11q12 rearrangement, the molecular data suggest that the functional outcome of the 11q12 rearrangements is deregulated expression of FOSL1. FAU - Macchia, Gemma AU - Macchia G AD - Department of Clinical Genetics, University and Regional Laboratories, Skane University Hospital, Lund University, Lund, Sweden. gemmamacchia@biologia.uniba.it FAU - Trombetta, Domenico AU - Trombetta D FAU - Moller, Emely AU - Moller E FAU - Mertens, Fredrik AU - Mertens F FAU - Storlazzi, Clelia T AU - Storlazzi CT FAU - Debiec-Rychter, Maria AU - Debiec-Rychter M FAU - Sciot, Raf AU - Sciot R FAU - Nord, Karolin H AU - Nord KH LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120312 PL - United States TA - Lab Invest JT - Laboratory investigation; a journal of technical methods and pathology JID - 0376617 RN - 0 (Adenomatous Polyposis Coli Protein) RN - 0 (CTNNB1 protein, human) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 0 (beta Catenin) RN - 0 (fos-related antigen 1) SB - IM MH - Adenomatous Polyposis Coli Protein/*genetics MH - Adult MH - Aged MH - Chromosome Breakage MH - Chromosomes, Human, Pair 11/*genetics MH - Chromosomes, Human, Pair 5 MH - Cytogenetic Analysis/methods MH - Diagnosis, Differential MH - Female MH - Gardner Syndrome/genetics/metabolism/pathology MH - Gene Expression Profiling/methods MH - Humans MH - Male MH - Middle Aged MH - Neoplasms, Muscle Tissue/*genetics/pathology MH - Oligonucleotide Array Sequence Analysis/methods MH - Proto-Oncogene Proteins c-fos/*genetics MH - Translocation, Genetic MH - beta Catenin/*genetics EDAT- 2012/03/14 06:00 MHDA- 2012/07/12 06:00 CRDT- 2012/03/14 06:00 PHST- 2012/03/14 06:00 [entrez] PHST- 2012/03/14 06:00 [pubmed] PHST- 2012/07/12 06:00 [medline] AID - S0023-6837(22)02636-8 [pii] AID - 10.1038/labinvest.2012.46 [doi] PST - ppublish SO - Lab Invest. 2012 May;92(5):735-43. doi: 10.1038/labinvest.2012.46. Epub 2012 Mar 12.