Translocation of BCL2 and BCL6 to the same immunoglobulin heavy chain locus in a case of follicular lymphoma

Leuk Lymphoma. 2005 Oct;46(10):1513-6. doi: 10.1080/10428190500125648.

Abstract

Follicular Lymphoma is a low grade malignancy of mature B-cells. The hallmark chromosome abnormality is the translocation t(14;18) which is observed in 70 - 80% of cases with a translocation t(3;14) present in a further 10%. Rarely both of these translocations, or one of their variants, may be present. These co-incident translocations usually involve different Ig loci or different Ig alleles. We present here a case of Follicular Lymphoma with leukemic presentation and a complex translocation involving the IgH, BCL2 and BCL6 loci. Double oncogene translocations to a single immunoglobulin locus are extremely rare in lymphomas with few cases described to date. To our knowledge this is the first reported case with a complex translocation involving these loci.

Publication types

  • Case Reports

MeSH terms

  • Chromosomes, Human / genetics
  • Female
  • Humans
  • Immunoglobulin Heavy Chains / genetics*
  • In Situ Hybridization, Fluorescence
  • Karyotyping
  • Lymphoma, Follicular / genetics*
  • Middle Aged
  • Proto-Oncogene Proteins c-bcl-2 / genetics*
  • Proto-Oncogene Proteins c-bcl-6 / genetics*
  • Translocation, Genetic / genetics*

Substances

  • Immunoglobulin Heavy Chains
  • Proto-Oncogene Proteins c-bcl-2
  • Proto-Oncogene Proteins c-bcl-6