Severe immunodeficiency spectrum associated with NHEJ1 gene mutation: Cernunnos/XLF deficiency
Cernunnos/XLF deficiency is a rare, severe combined immunodeficiency, inherited in an autosomal recessive pattern (OMIM number: 611290), related to the NHEJ1 gene. This gene participates in the DNA non-homologous end-joining pathway, repairing double-strand breaks in the DNA of mammalian cells. The...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Instituto Nacional de Salud
2024-12-01
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| Series: | Biomédica: revista del Instituto Nacional de Salud |
| Subjects: | |
| Online Access: | https://revistabiomedica.org/index.php/biomedica/article/view/7414 |
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| Summary: | Cernunnos/XLF deficiency is a rare, severe combined immunodeficiency, inherited in an autosomal recessive pattern (OMIM number: 611290), related to the NHEJ1 gene. This gene participates in the DNA non-homologous end-joining pathway, repairing double-strand breaks in the DNA of mammalian cells. The clinical features include growth retardation, microcephaly, triangle-shaped face, recurrent infections, fibroblast’s excessive sensitivity to gamma-ionizing radiation, and hypogammaglobulinemia; also, low counts of subpopulations of B and T lymphocytes, with normal values of natural-killer cells.
This manuscript aims to present an extremely rare case of combined immunodeficiency in a twenty-years-old man with non-consanguineous parents and a homozygote variant of the NHEJ1 gene. This case is the fiftieth reported in the literature and the first in Colombia, given the low prevalence of NHEJ1-related immunodeficiency and its difficult diagnosis due to scarce knowledge. |
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| ISSN: | 0120-4157 |