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. 1988 Apr 8;53(1):137-44.
doi: 10.1016/0092-8674(88)90495-3.

Molecular analysis of a t(7;14)(q35;q32) chromosome translocation in a T cell leukemia of a patient with ataxia telangiectasia

G Russo  1 , M Isobe, L Pegoraro, J Finan, P C Nowell, C M Croce
Affiliations

Molecular analysis of a t(7;14)(q35;q32) chromosome translocation in a T cell leukemia of a patient with ataxia telangiectasia

G Russo et al. Cell. .

Abstract

Molecular analysis of somatic cell hybrids derived from T cells carrying a t(7;14)(q35;q32) chromosomal translocation from a patient with ataxia telangiectasia and T cell leukemia indicates that the breakpoint on chromosome 14 is proximal to the IgH locus and to the D14S1 locus, while the breakpoint on chromosome 7 involves the T cell receptor beta chain locus immediately 5' to J beta 1.5 on chromosome 7. The separation of V beta and C beta observed in somatic cell hybrids defined the orientation of the T cell receptor beta chain locus on chromosome 7 where the V beta genes are centromeric and the C beta genes are telomeric. A novel chromosomal alteration, undetected cytogenetically, was revealed as being an inversion with duplication of the distal band of chromosome 14q32. The importance of the 14q32 region in the leukemogenic process is discussed.

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