Lowry-Wood syndrome (LWS) is a rare condition characterized by multiple epiphyseal dysplasia (MED), microcephaly, and congenital nystagmus. A variable degree of mental retardation can also be present. It is probably inherited as an autosomal recessive trait. We report a new case of MED and microcephaly, without other additional features, suggesting a mild form of LWS. Molecular analysis of the cartilage oligomeric matrix protein (COMP) gene was performed and failed to find mutations.
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http://dx.doi.org/10.1002/ajmg.a.20008 | DOI Listing |
Am J Med Genet A
April 2023
Genetic Health QLD, Royal Brisbane & Women's Hospital, Herston, Queensland, Australia.
Biallelic pathogenic variants in RNU4ATAC cause microcephalic osteodysplastic primordial dwarfism type I (MOPD1), Roifman syndrome (RS) and Lowry-Wood syndrome (LWS). These conditions demonstrate significant phenotypic heterogeneity yet have overlapping features. Although historically described as discrete conditions they appear to represent a phenotypic spectrum with clinical features not always aligning with diagnostic categories.
View Article and Find Full Text PDFNucleic Acids Res
April 2021
Physiology and Neurobiology Department, University of Connecticut, 75 N. Eagleville Road, Storrs, CT 06269, USA.
Vertebrate genomes contain major (>99.5%) and minor (<0.5%) introns that are spliced by the major and minor spliceosomes, respectively.
View Article and Find Full Text PDFDevelopment
August 2020
Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA
Disruption of the minor spliceosome due to mutations in is linked to primordial dwarfism in microcephalic osteodysplastic primordial dwarfism type 1, Roifman syndrome, and Lowry-Wood syndrome. Similarly, primordial dwarfism in domesticated animals is linked to positive selection in minor spliceosome components. Despite being vital for limb development and size regulation, its role remains unexplored.
View Article and Find Full Text PDFHum Genet
December 2018
Divisions of Medical Genetics, Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada.
Lowry-Wood syndrome (LWS) is a skeletal dysplasia characterized by multiple epiphyseal dysplasia associated with microcephaly, developmental delay and intellectual disability, and eye involvement. Pathogenic variants in RNU4ATAC, an RNA of the minor spliceosome important for the excision of U12-dependent introns, have been recently associated with LWS. This gene had previously also been associated with microcephalic osteodysplastic primordial dwarfism (MOPD) and Roifman syndrome (RS), two distinct conditions which share with LWS some skeletal and neurological anomalies.
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