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Details

Autor(en) / Beteiligte
Titel
NUDCD3 deficiency disrupts V(D)J recombination to cause SCID and Omenn syndrome
Ist Teil von
  • Science immunology, 2024-05, Vol.9 (95), p.eade5705
Ort / Verlag
United States
Erscheinungsjahr
2024
Quelle
MEDLINE
Beschreibungen/Notizen
  • Inborn errors of T cell development present a pediatric emergency in which timely curative therapy is informed by molecular diagnosis. In 11 affected patients across four consanguineous kindreds, we detected homozygosity for a single deleterious missense variant in the gene NudC domain-containing 3 ( ) Two infants had severe combined immunodeficiency with the complete absence of T and B cells (T B SCID), whereas nine showed classical features of Omenn syndrome (OS). Restricted antigen receptor gene usage by residual T lymphocytes suggested impaired V(D)J recombination. Patient cells showed reduced expression of NUDCD3 protein and diminished ability to support RAG-mediated recombination in vitro, which was associated with pathologic sequestration of RAG1 in the nucleoli. Although impaired V(D)J recombination in a mouse model bearing the homologous variant led to milder immunologic abnormalities, NUDCD3 is absolutely required for healthy T and B cell development in humans.

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