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EB Lund and SL Stein
Abstract
Trichothiodystrophy describes a group of recessively inherited multisystem neuroectodermal disorders that takes its name from the characteristic feature of brittle, sulfur-deficient hair. We describe two siblings with trichothiodystrophy due to a novel genotype. The maternal mutation (p.Arg722Trp) is a previously described pathogenic mutation in ERCC2 that has been shown to result in a severe phenotype, while the paternal mutation (c.1480-1G > C) has not been previously reported. Our cases confirm the severe phenotype associated with the p.Arg722Trp mutation and expand the known genetic mutations associated with trichothiodystrophy by demonstrating a novel pathogenic mutation in ERCC2.
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