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Case Reports
. 2006 May 4;354(18):1913-21.
doi: 10.1056/NEJMoa053750.

Inherited and Somatic CD3zeta Mutations in a Patient With T-cell Deficiency

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Case Reports

Inherited and Somatic CD3zeta Mutations in a Patient With T-cell Deficiency

Frédéric Rieux-Laucat et al. N Engl J Med. .
Free article

Abstract

A four-month-old boy with primary immunodeficiency was found to have a homozygous germ-line mutation of the gene encoding the CD3zeta subunit of the T-cell receptor-CD3 complex. CD3zeta is necessary for the development and function of T cells. Some of the patient's T cells had low levels of the T-cell receptor-CD3 complex and carried the Q70X mutation in both alleles of CD3zeta, whereas other T cells had normal levels of the complex and bore the Q70X mutation on only one allele of CD3zeta, plus one of three heterozygous somatic mutations of CD3zeta on the other allele, allowing expression of poorly functional T-cell receptor-CD3 complexes.

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