Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6041295 | Neuromuscular Disorders | 2014 | 9 Pages |
Abstract
Mutations in POMT1 lead to a group of neuromuscular conditions ranging in severity from Walker-Warburg syndrome to limb girdle muscular dystrophy. We report two male siblings, ages 19 and 14, and an unrelated 6-year old female with early onset muscular dystrophy and intellectual disability with minimal structural brain anomalies and no ocular abnormalities. Compound heterozygous mutations in POMT1 were identified including a previously reported nonsense mutation (c.2167dupG; p.Asp723Glyfs*8) associated with Walker-Warburg syndrome and a novel missense mutation in a highly conserved region of the protein O-mannosyltransferase 1 protein (c.1958C>T; p.Pro653Leu). This novel variant reduces the phenotypic severity compared to patients with homozygous c.2167dupG mutations or compound heterozygous patients with a c.2167dupG mutation and a wide range of other mutant POMT1 alleles.
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Authors
Stephanie E. Wallace, Jessie H. Conta, Thomas L. Winder, Tobias Willer, Jamie M. Eskuri, Richard Haas, Kathleen Patterson, Kevin P. Campbell, Steven A. Moore, Sidney M. Jr.,