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Hum Genet. 1990 Jun;85(1):80-4.

Inv(14) with distal breakpoint in 14q32.1 in three cases of T cell lymphoma.

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  • 1Abteilung Humangenetik, Christian Albrechts-Universit├Ąt, Kiel, Federal Republic of Germany.


The distal breakpoint of inv(14) in T cell clones, established from patients with ataxia telangiectasia, lies outside the immunoglobulin heavy chain gene locus on 14q32.3, and more proximal to the centromere than the distal breakpoint of inv(14) in the T cell lymphoma cell line SUP-T1. We report 3 cases of T cell lymphoma cytogenetically showing the same type of inv(14) as the AT T cell clones. All 3 cases express a similar immunophenotype, which is that of peripheral T lymphocytes with phenotypic remnants of thymic or postthymic lymphoblasts. This finding provides evidence that this type of inv(14) is involved in the malignant transformation of mature T lymphocytes.

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