t(2; 18) and t(18;22) Variant Chromosomal Translocations in B Cell Malignancies

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Abstract
Variant translocations (2;18 and 18;22) are described in this review. The chromosomal and molecular findings of these translocations of BCL2 and their effect on possible BCL2 gene activation is discussed. Unanswered questions still remain and these include why this is so rare compared to the 25% incidence recorded for translocations in Burkitt's lymphoma. Further studies are obviously still needed in order to determine the true frequency of these findings and their distribution in the various B-cell disorders.