A Novel Compound Heterozygous Tyrosine Hydroxylase Mutation (p.R441P) with Complex Phenotype

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A novel compound heterozygous tyrosine hydroxylase mutation (p.R441P) with complex phenotype.

Tyrosine hydroxylase (TH) is a tetrahydrobiopterin (BH4) dependent enzyme that catalyses the conversion of L-tyrosine to L-dopa, the rate-limiting step in the biosynthesis of dopamine. Autosomal recessive mutations in the TH gene cause impaired TH activity and are associated with phenotypes ranging from autosomal recessive dopa-responsive dystonia (DRD) to progressive infantile encephalopathy. ...

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A Compound Heterozygous HPD Mutation in an Iranian Patient with Hypertyrosinemia Type III

Background and Aims: Hypertyrosinemia type 3 (HT3) is an inherited error in tyrosine metabolism caused by a mutation in the 4-hydroxyphenylpyruvate dioxygenase (HPD) gene. Here we report a one and half-year-old girl infant who was diagnosed based on increased serum tyrosine levels and increased urinary excretion of p-hydroxyphenyl derivatives. Materials and Methods: The proband was one and ha...

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Identification of a novel compound heterozygous mutation of the CYP21A2 gene causing 21-hydroxylase deficiency in a Chinese pedigree

21‑Hydroxylase deficiency (21‑OHD) is the most common cause of congenital adrenal hyperplasia. Inherited in an autosomal recessive manner, 21‑OHD is caused by mutations in the cytochrome P450 family 21 subfamily A member 2 (CYP21A2) gene. The present study was designed to investigate the genetic characteristics of one Chinese pedigree and to identify the genotype‑phenotype association, thereby ...

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Clinical Phenotype in a Toddler with a Novel Heterozygous Mutation of the Vitamin D Receptor

We present the clinical phenotype of a toddler who presented with vitamin D-resistant rickets, with one of the highest initial levels of alkaline phosphatase and parathyroid hormone (PTH) levels reported in the literature. The toddler had novel compound heterozygous mutations in the ligand-binding site of the vitamin D receptor and had an excellent response to calcitriol (1,25(OH)2D).

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A novel nonsense mutation with a compound heterozygous mutation in TGFBI gene in lattice corneal dystrophy type I.

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ژورنال

عنوان ژورنال: Journal of Parkinson's Disease

سال: 2011

ISSN: 1877-718X,1877-7171

DOI: 10.3233/jpd-2011-11006