Novel bcl-2 breakpoints in patients with follicular lymphoma. uri icon

Overview

abstract

  • Using genomic DNA from patients with follicular lymphoma, we performed polymerase chain reaction (PCR) amplifications to detect t(14;18) translocations. Unexpectedly large products of approximately 1 kilobase (kb) were detected by gel electrophoresis in 2 of 50 positive cases. In these 2 cases, sequence analyses showed novel breakpoints in the 3' untranslated region of bcl-2, approximately 800 bp downstream of the major breakpoint region (mbr). The breakpoints in IgH occurred in JH4 in one patient and JH5 in the other. Sequences just upstream of the new bcl-2 breakpoints suggest a mechanism of translocation that may include minisatellite core-mediated recombination. In one of our two patients with novel bcl-2 breakpoints, the approximately 1 kb product obtained using conventional mbr primers was detectable only when a nested PCR was performed. These findings have important implications for diagnosis and minimal residual disease detection in t(14;18)-positive lymphomas.

publication date

  • April 1, 1998

Research

keywords

  • Chromosomes, Human, Pair 18
  • DNA, Neoplasm
  • Genes, bcl-2
  • Lymphoma, Follicular

Identity

Scopus Document Identifier

  • 0031659614

Digital Object Identifier (DOI)

  • 10.1097/00019606-199804000-00004

PubMed ID

  • 9785006

Additional Document Info

volume

  • 7

issue

  • 2