{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T07:01:08Z","timestamp":1780383668675,"version":"3.54.1"},"reference-count":35,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2022,6,2]],"date-time":"2022-06-02T00:00:00Z","timestamp":1654128000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Molec Gen &amp; Gen Med"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Defective Cernunnos gene in nonhomologous end\u2010joining (NHEJ) pathway of the DNA repair is responsible for radiosensitive severe combined immunodeficiency (SCID). Herein, presented a new patient with Cernunnos deficiency and summarized the clinical, immunological, and molecular features of reported patients in the literature.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case<\/jats:title><jats:p>The patient was a 6\u2010month\u2010old female born to consanguineous parents. She presented with long\u2010lasting fever, diarrhea, poor feeding, and restlessness. She had suffered from recurrent fever of unknown origin and multiple episodes of oral candidiasis. In the physical examination, microcephaly, failure to thrive, oral candidiasis, pustular rash on fingers, and perianal ulcers, but no dysmorphic feature were observed. The immunologic workup revealed lymphopenia, neutropenia, normocytic anemia, low T\u2010 but normal B\u2010 and natural killer (NK)\u2010 cells, low immunoglobulin (Ig)G, and normal IgA, IgM, and IgE. The T\u2010cell receptor excision circle (TREC) was low and the lymphocyte transformation test (LTT) was abnormal to mitogens and antigens. She was diagnosed with T<jats:sup>\u2212<\/jats:sup> B<jats:sup>+<\/jats:sup> NK<jats:sup>+<\/jats:sup> SCID and improved by intravenous immunoglobulin along with antimicrobials. A homozygous splice site variant, c.390\u2009+\u20091G\u2009&gt;\u2009T, at the intron 3 of the <jats:italic>NHEJ1<\/jats:italic>, was identified and the diagnosis of Cernunnos deficiency was established. However, while a candidate for hematopoietic stem cell transplantation, she developed sepsis and died at 11\u2009months of age.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Cernunnos deficiency should be considered as a differential diagnosis in patients with microcephaly, growth retardation, recurrent infections, T\u2010cell defects, and hypogammaglobulinemia. The normal B\u2010cell level in the index patient is an unexpected finding in Cernunnos deficiency which requires further evaluation.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mgg3.1990","type":"journal-article","created":{"date-parts":[[2022,6,3]],"date-time":"2022-06-03T06:37:05Z","timestamp":1654238225000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Cernunnos defect in an Iranian patient with T<sup>\u2212<\/sup> B<sup>+<\/sup><scp>NK<\/scp><sup>+<\/sup> severe combined immunodeficiency: A case report and review of the literature"],"prefix":"10.1002","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0732-9170","authenticated-orcid":false,"given":"Mahnaz","family":"Jamee","sequence":"first","affiliation":[{"name":"Pediatric Nephrology Research Center Research Institute for Children\u2019s Health Shahid Beheshti University of Medical Sciences  Tehran Iran"},{"name":"Immunology and Allergy Department 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