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  • Title: Identification of a novel KAT6A variant in an infant presenting with facial dysmorphism and developmental delay: a case report and literature review.
    Author: Bae S, Yang A, Kim J, Lee HJ, Park HK.
    Journal: BMC Med Genomics; 2021 Dec 20; 14(1):297. PubMed ID: 34930245.
    Abstract:
    BACKGROUND: Arboleda-Tham syndrome (ARTHS), caused by a pathogenic variant of KAT6A, is an autosomal dominant inherited genetic disorder characterized by various degrees of developmental delay, dysmorphic facial appearance, cardiac anomalies, and gastrointestinal problems. CASE PRESENTATION: A baby presented multiple facial deformities including a high arched and cleft palate, with philtral ridge and vermilion indentation, a prominent nasal bridge, a thin upper lip, low-set ears, an epicanthal fold, and cardiac malformations. Whole exome sequencing (WES) revealed a heterozygous nonsense mutation in exon 8 of the KAT6A gene (c.1312C>T, p.[Arg438*]) at 2 months of age. After a diagnosis of ARTHS, an expressive language delay was observed during serial assessments of developmental milestones. CONCLUSIONS: In this study, we describe a case with a novel KAT6A variant first identified in Korea. This case broadens the scope of clinical features of ARTHS and emphasizes that WES is necessary for early diagnosis in patients with dysmorphic facial appearances, developmental delay, and other congenital abnormalities.
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