PUS3-related disorder: Report of a novel patient and delineation of the phenotypic spectrum.
Am J Med Genet A 2021;
188:635-641. [PMID:
34713961 DOI:
10.1002/ajmg.a.62547]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 10/08/2021] [Accepted: 10/15/2021] [Indexed: 11/08/2022]
Abstract
PUS3 encodes the pseudouridylate synthase 3, an enzyme catalyzing the formation of tRNA pseudouridine, which plays a critical role in tRNA structure, function, and stability. Biallelic pathogenic variants of PUS3 have been previously associated with severe intellectual disability, microcephaly, epilepsy, and short stature. We identified a novel homozygous PUS3 frameshift variant in a child with facial dysmorphisms, growth failure, microcephaly, retinal dystrophy, cerebellar hypoplasia, congenital heart defect, and right kidney hypoplasia. This patient further expands the phenotypic spectrum of PUS3-related disorders to include a more severe syndromic presentation.
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