Microcephalic osteodysplastic primordial dwarfism type I with biallelic mutations in the RNU4ATAC gene.
Microcephalic osteodysplastic primordial dwarfism type I (MOPD I) is a rare autosomal recessive developmental disorder characterized by extreme intrauterine growth retardation, severe microcephaly, central nervous system abnormalities, dysmorphic facial features, skin abnormalities, skeletal changes, limb deformations, and early death. Recently, mutations in the RNU4ATAC gene, which encodes U4atac, a small nuclear RNA that is a crucial component of the minor spliceosome, were found to cause MOPD I. MOPD I is the first disease known to be associated with a defect in small nuclear RNAs. We describe here the clinical and molecular data for 17 cases of MOPD I, including 15 previously unreported cases, all carrying biallelic mutations in the RNU4ATAC gene.
Division of Human Genetics, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, 2001 Polaris Parkway Columbus, OH 43240, USA. email@example.com, , , , , , ,
Fetal Growth Retardation
Magnetic Resonance Imaging
RNA, Small Nuclear
Pub Type(s)Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't