Demir E, Adım F, Döğen ME, Aydoğdu A, Yeşil E, Mermer S, Başer B, Ürel Demir G. EXTL3-Associated Immunoskeletal Dysplasia with Neurodevelopmental Abnormalities: A Lethal Phenotype.
Pediatr Allergy Immunol Pulmonol 2023;
36:147-149. [PMID:
38010729 DOI:
10.1089/ped.2023.0079]
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Abstract
Background: Immunoskeletal dysplasia with neurodevelopmental abnormalities (ISDNA) caused by Exostosin-Like Glycosyltransferase 3 (EXTL3) biallelic mutations is a very rare syndrome with only 16 cases reported in the literature. Skeletal dysplasia, neurodevelopmental delay, immunodeficiency, liver, and kidney cysts are the most common findings of this syndrome. Case Presentation: Here, we report on a patient who exhibited a lethal phenotype with clinical characteristics of this syndrome and had a homozygous pathogenic mutation in EXTL3 gene. Conclusions: ISDNA should be kept in mind in the differential diagnosis of patients presenting with neuro-immuno-skeletal dysplasia phenotype.
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