Promiscuous translocations into immunoglobulin heavy chain switch regions in multiple myeloma.

ABSTRACT: In multiple myeloma, karyotopic 14q32 translocations have been identified at a variable frequency (10-60% in different studies). In the majority of cases, the partner chromosome has not been identified (14q+), and in the remaining cases, a diverse array of chromosomal partners has been implicated, with 11q13 being the most common. We developed a comprehensive Southern blot assay to identify and distinguish different kinds of immunoglobulin heavy chain (IgH) switch recombination events. Illegitimate switch recombination fragments (defined as containing sequences from only one switch region) are potential markers of translocation events into IgH switch regions and were identified in 15 of 21 myeloma cell lines, including seven of eight karyotyped lines that have no detectable 14q32 transloca

SUBMITTER: Bergsagel PL 

PROVIDER: S-EPMC19472 | biostudies-literature | 1996 Nov

REPOSITORIES: biostudies-literature