PMID- 15642391 OWN - NLM STAT- MEDLINE DCOM- 20050413 LR - 20061115 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 156 IP - 2 DP - 2005 Jan 15 TI - Recurrent genomic imbalances in B-cell splenic marginal-zone lymphoma revealed by comparative genomic hybridization. PG - 122-8 AB - The cytogenetics of splenic marginal zone lymphoma (SMZL) is less well characterized than the cytogenetics of other non-Hodgkin B-cell lymphomas. The aim of this study was to address this issue by identifying characteristic copy number imbalances in SMZL, for which purpose we analyzed 20 SMZL cases by comparative genomic hybridization (CGH), adding chromosome banding and fluorescence in situ hybridization (FISH) in some cases. CGH identified copy number imbalances in 70% of the cases. Imbalances were recurrently observed for chromosomes 3 (20%), 6 (20%), 7 (25%), 12 (20%), and 14 (10%). The minimally involved regions of these chromosomes were gains of 3q25 approximately qter and 12q13 approximately q15, and loss of 6q23, 7q31, and 14q22 approximately q24. A compilation of our data with data from 3 previous SMZL CGH studies revealed a significant heterogeneity between the studies. Eleven imbalances were recurrently observed in the compiled data set, as opposed to only 5 in our data set. The most frequently observed imbalances in the 73 SMZL cases of the compiled data set were gains of 3q (27%) and 12q (15%), and loss of 7q (18%). Our data suggest that SMZL constitute a genetically heterogeneous disease where gain of 3q25 and loss of 7q31 are the most likely imbalances to be involved in the pathogenesis of the disease. FAU - Andersen, Claus L AU - Andersen CL AD - Department of Hematology, Laboratory of Cancer Cytogenetics, Arhus Sygehus, Tage Hansens Gade 2, DK-8000 Arhus C, Denmark. FAU - Gruszka-Westwood, Alicja AU - Gruszka-Westwood A FAU - Atkinson, Shayne AU - Atkinson S FAU - Matutes, Estella AU - Matutes E FAU - Catovsky, Daniel AU - Catovsky D FAU - Pedersen, Rikke K AU - Pedersen RK FAU - Pedersen, Bjarne B AU - Pedersen BB FAU - Pulczynski, Stanislaw AU - Pulczynski S FAU - Hokland, Peter AU - Hokland P FAU - Jacobsen, Elisa AU - Jacobsen E FAU - Koch, Jorn AU - Koch J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (DNA, Neoplasm) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - *Chromosome Aberrations MH - Chromosome Mapping MH - DNA, Neoplasm/genetics/isolation & purification MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphoma, B-Cell/*genetics/pathology MH - Male MH - Middle Aged MH - Nucleic Acid Hybridization/methods MH - Splenic Neoplasms/*genetics EDAT- 2005/01/12 09:00 MHDA- 2005/04/14 09:00 CRDT- 2005/01/12 09:00 PHST- 2003/11/18 00:00 [received] PHST- 2004/04/27 00:00 [revised] PHST- 2004/04/28 00:00 [accepted] PHST- 2005/01/12 09:00 [pubmed] PHST- 2005/04/14 09:00 [medline] PHST- 2005/01/12 09:00 [entrez] AID - S0165-4608(04)00207-9 [pii] AID - 10.1016/j.cancergencyto.2004.04.026 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2005 Jan 15;156(2):122-8. doi: 10.1016/j.cancergencyto.2004.04.026.