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Title: C-MYC, BCL2 and BCL6 translocation in B-cell non-Hodgkin lymphoma cases
Authors: Abdul Salam, DSD
Thit, EE
Teoh, SH
Tan, SY 
Peh, SC
Cheah, SC
Keywords: BCL2
B-cell Non-Hodgkin Lymphoma
gene abberation
Issue Date: 1-Jan-2020
Publisher: Ivyspring International Publisher
Citation: Abdul Salam, DSD, Thit, EE, Teoh, SH, Tan, SY, Peh, SC, Cheah, SC (2020-01-01). C-MYC, BCL2 and BCL6 translocation in B-cell non-Hodgkin lymphoma cases. Journal of Cancer 11 (1) : 190-198. ScholarBank@NUS Repository.
Abstract: C-MYC, BCL2 and BCL6 genes are the most commonly oncogenes involved in B-Cell lymphomas. Translocations of these oncogenes are associated with an aggressive clinical course. This study aims to elucidate the patterns of BCL6, BCL2 and C-MYC gene aberrations among Malaysian B-cell Non-Hodgkin Lymphoma (NHL) using fluorescence in situ hybridization (FISH). Eighty-one B-cell NHL tissue blocks were retrieved between the year 2011 to 2015 and investigated using immunohistochemistry and interphase FISH dual colour break-apart probes of BCL2, BCL6, C-MYC and IgH. A significant difference was detected between the nodal and extranodal sites in all the BCL2 (p=0.01), C-MYC (p=0.03) and IgH (p=0.006) cases except for BCL6 (p=0.2). Our study showed that BCL6 had the highest gene translocation while BCL2/BCL6 had the most mixed aberrations of gain copies and translocation, however no mixed aberrations of gain copies and translocation was found in C-MYC. None of the mixed gain copies and translocation was found in any of the germinal centre B-cell (GCB) subtype of Diffuse Large B-cell Lymphoma, however, five were found in BCL6 and IgH gene in the non-GCB subtype; while mixed gain copies and translocation cases of BCL2 gene was found in the Follicular Lymphoma cases only. The study found interesting findings of BCL2, C-MYC and IgH gene aberrations between nodal and extranodal sites. This information might benefit future study in predicting prognosis and determine effective therapeutic strategies in the multi-ethnic populations of Malaysia as well as the Asian population.
Source Title: Journal of Cancer
ISSN: 18379664
DOI: 10.7150/jca.36954
Appears in Collections:Staff Publications

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