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Molecular genetic characterization reveals new subsets of mantle cell lymphoma
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.
2008 (English)In: Leukemia and Lymphoma, ISSN 1042-8194, E-ISSN 1029-2403, Vol. 49, no 6, 1042-1049 p.Article, review/survey (Refereed) Published
Abstract [en]

Mantle cell lymphoma (MCL) is an aggressive B-cell malignancy, which is believed to originate from naive B-cells in the mantle zone of lymph nodes. Recently, a more diverse cellular origin has been implicated in MCL, since the disease was shown to consist of two subsets based on immunoglobulin heavy-chain variable (IGHV) gene analysis; a major subset with unmutated IGHV genes and a smaller subset (similar to 20 to 30%) displaying mutated IGHV genes. Presence of somatic hypermutation in the 'mutated' subset suggests either exposure to a germinal centre ( GC) environment or that somatic hypermutation has been acquired in a non-GC context. Furthermore, a preferential IGHV gene utilization has been revealed in MCL, where IGHV3-21 and IGHV4-34 are the most predominant. MCLs with an IGHV3-21 usage almost exclusively share the same light chain (IGLV3-19) use and this subset is also related to a better prognosis. MCL cases utilising the IGHV3-21 gene display less chromosomal alterations than MCLs using other IGHV genes and in addition, gains in 15q and losses in 9p were not observed in any of these cases. These latter findings are in favour of the hypothesis that IGHV3-21(+) tumours may represent a distinct MCL subentity and that there is a possible role for antigens in MCL development. In this review, we will summarise these recent studies of IG gene rearrangements in MCL as well as molecular cytogenetic characteristics of this malignancy.

Place, publisher, year, edition, pages
2008. Vol. 49, no 6, 1042-1049 p.
Keyword [en]
mantle cell lymphoma, immunoglobulin genes, somatic hypermutation, IGHV3-21 gene usage, genomic imbalances, array-CGH
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-142091DOI: 10.1080/10428190801947559ISI: 000256753100007PubMedID: 18452063OAI: oai:DiVA.org:uu-142091DiVA: diva2:387345
Available from: 2011-01-14 Created: 2011-01-13 Last updated: 2017-12-11Bibliographically approved

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