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  • Title: Analysis of the BCL-6 gene configuration in diffuse B-cell non-Hodgkin's lymphomas and Hodgkin's disease.
    Author: Pescarmona E, Lo Coco F, Pacchiarotti A, Rapanotti MC, Cimino G, Di Paolo B, Baroni CD.
    Journal: J Pathol; 1995 Sep; 177(1):21-5. PubMed ID: 7472775.
    Abstract:
    BCL-6 is a novel proto-oncogene that codes for a zinc-finger protein sharing homologies with many transcription factors. It has recently been shown that BCL-6 is involved in chromosome band 3q27 aberrations in non-Hodgkin's lymphomas (NHLs) and BCL-6 rearrangements have been detected in 34-45 per cent of diffuse large cell lymphomas with B immunophenotype. We have studied the BCL-6 gene configuration by Southern blot analysis in 60 cases of B-cell NHL and in 17 cases of Hodgkin's disease (HD). BCL-6 was rearranged in 15/46 (32.6 per cent) diffuse B-large cell lymphomas, mainly with centroblastic morphology, and in 2/11 (18.2 per cent) follicular (centroblastic-centrocytic) lymphomas. Conversely, all cases of HD, including four cases of lymphocyte predominant, nodular type (nodular paragranuloma), had a germline configuration. These findings confirm that BCL-6 is rearranged in a significant percentage of diffuse B-large cell lymphomas, suggesting that this proto-oncogene might have a pathogenetic role in this subset of NHLs, but our preliminary analysis suggests that BCL-6 lesions are not involved in the pathogenesis of HD. However, further investigations using more sensitive techniques are required to confirm these findings.
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