Journal of Experimental Medicine, Vol 173, 1033-1036, Copyright © 1991 by Rockefeller University Press
Novel chromosome translocation caused by fusion of immunoglobulin heavy and light chain V genes in a human B lymphoblastoid cell line
MA Kennedy
Department of Pathology, Christchurch School of Medicine, Christchurch Hospital, New Zealand.
The chromosome breakpoints of a translocation, t(2;14), from an Epstein-
Barr virus-transformed human B lymphoblastoid cell line were isolated and
analyzed. This unusual translocation arose as a result of the fusion of two
immunoglobulin (Ig) variable (V) genes, one from the heavy chain cluster on
chromosome 14, the other from the light chain (k) cluster on chromosome 2.
The chromosome breaks occurred within the coding sequence of each gene, and
there was no obvious evidence for lymphoid V(D)J recombinase involvement in
the translocation. This suggests that breakage and rejoining of the
involved V genes occurred by some process other than that which normally
rearranges Ig genes.