PMID- 15642390 OWN - NLM STAT- MEDLINE DCOM- 20050413 LR - 20050111 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 156 IP - 2 DP - 2005 Jan 15 TI - Frequent aberrations of chromosome 8 in aggressive B-cell non-Hodgkin lymphoma. PG - 114-21 AB - Translocations involving chromosome 8 are the most common aberrations in B-cell non-Hodgkin lymphoma (B-NHL). The presence of the typical t(8;14)(q24;q32) or its variants has been confirmed in all cases of Burkitt lymphoma (BL), in some cases of Burkitt-like lymphoma (BLL), and in diffuse large B-cell lymphoma (DLBCL). The alterations lead to deregulated expression of c-myc protein by a chromosomal translocation joining C-MYC gene with sequences from immunoglobulin (Ig) enhancers. The C-MYC gene rearrangement plays an essential role in leukemogenesis of BL and probably plays a part in other aggressive NHLs. The present study was undertaken to compare the cytogenetic features in cases of BL, BLL, and DLBCL. We detected chromosomal aberrations by G-banding and fluorescence in situ hybridization (FISH) painting in 10 cases of aggressive B-NHL and used FISH to visualize the C-MYC gene rearrangement. Chromosome 8 was most frequently involved in structural aberrations (8/10 cases), and 4 cases showed the typical t(8;14)(q24;q32). Only two of 5 patients suspected of having BL fulfilled all the criteria for this diagnosis; in the others, chromosome 8 was aberrant, but the absence of C-MYC rearrangement or the results of flow cytometry excluded the diagnosis of BL. All BLL cases showed C-MYC overexpression, but only one had a rearrangement of the C-MYC gene; the remaining cases showed other aberrations of chromosome 8. This study indicates that the mechanisms of C-MYC activation involved in BLL can be different from that for the BL. FAU - Pienkowska-Grela, Barbara AU - Pienkowska-Grela B AD - Cytogenetic Laboratory, The Memorial M. Sklodowska-Curie Cancer Centre and Institute, Roentgen Str 5, 02-781 Warsaw, Poland. barpien@coi.waw.pl FAU - Witkowska, Anna AU - Witkowska A FAU - Grygalewicz, Beata AU - Grygalewicz B FAU - Rymkiewicz, Grzegorz AU - Rymkiewicz G FAU - Rygier, Jolanta AU - Rygier J FAU - Woroniecka, Renata AU - Woroniecka R FAU - Walewski, Jan AU - Walewski J LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM MH - Adolescent MH - Adult MH - Aged MH - *Chromosome Aberrations MH - Chromosome Banding MH - Chromosome Mapping MH - Chromosomes, Human, Pair 14 MH - *Chromosomes, Human, Pair 8 MH - Female MH - Flow Cytometry MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Lymphoma, B-Cell/*genetics/pathology MH - Male MH - Middle Aged MH - Translocation, Genetic MH - Tumor Cells, Cultured EDAT- 2005/01/12 09:00 MHDA- 2005/04/14 09:00 CRDT- 2005/01/12 09:00 PHST- 2004/02/10 00:00 [received] PHST- 2004/04/05 00:00 [revised] PHST- 2004/04/15 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)00177-3 [pii] AID - 10.1016/j.cancergencyto.2004.04.009 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2005 Jan 15;156(2):114-21. doi: 10.1016/j.cancergencyto.2004.04.009.