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Ataxia telangiectasia (AT) is characterized by neurological deterioration, immunodeficiency, spontaneous chromosomal instability, hypersensitivity to ionizing radiation, predisposition to cancer, particularly T cell leukaemia and lymphoma, and premature ageing. The most commonly observed defect affecting telomeres in humans is telomeric fusions,(More)
Two ataxia telangiectasia patients with unusual clinical and cellular features are described. Cultured fibroblasts and PHA stimulated lymphocytes from these two patients showed a smaller increase of radiosensitivity than cells from other A-T patients, as measured by colony forming ability or induced chromosome damage respectively, after exposure to ionising(More)
The present study focuses on a large family with an X-linked immunodeficiency in which there are variable clinical and laboratory phenotypes, including recurrent viral and bacterial infections, hypogammaglobulinemia, Epstein-Barr virus-driven lymphoproliferation, splenomegaly, colitis, and liver disease. Molecular and genetic analyses revealed that affected(More)