Human RAG2, like RAGI, is on chromosome II band p13 and therefore not linked to ataxia telangiectasia complementation groups

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Abstract
Ataxia telangiectasia (A‐T) is an inherited, recessive, cancer‐prone disease with associated immunodeficiency and chromosome abnormalities involving TCR loci. The latter phenomena implicate errors of the enzyme(s) responsible for assembly of antigen receptor genes (recombinase) in disease pathogenesis. Here we report the location of a human recombination activating gene (RAG2), in addition to RAGI, on chromosome 11, band p13, thereby formally demonstrating linkage of these genes in humans and showing that they are not linked to the known locus responsible for the A‐T syndrome.