Mucopolysaccharidosis type VI: Report of two Taiwanese patients and identification of one novel mutation.
Article Details
- CitationCopy to clipboard
Yang CF, Wu JY, Lin SP, Tsai FJ
Mucopolysaccharidosis type VI: Report of two Taiwanese patients and identification of one novel mutation.
J Formos Med Assoc. 2001 Dec;100(12):820-3.
- PubMed ID
- 11802522 [ View in PubMed]
- Abstract
Mucopolysaccharidosis type VI (MPS VI) is an autosomal recessive lysosomal storage disease caused by a deficiency of N-acetylgalactosamine-4-sulphatase (arylsulfatase B, ASB). We report the clinical investigation and mutation analysis of two Taiwanese patients with severe (Case 1) and intermediate (Case 2) phenotypes of MPS VI. Three missense mutations and one polymorphism were identified. Case 1 was found to have a novel heteroallelic C-to-G transversion at nucleotide 1197 causing a phenylalanine to leucine substitution at residue 399 (Phe399Leu), and a heteroallelic Gln239Arg mutation. In Case 2, a heterozygous Cys192Arg mutation and a Val358Met polymorphism were identified. Among these three mutations, the Gln239Arg and Phe399Leu substitutions have so far been observed only in the Taiwanese population. The correlation between genotype and phenotype contributes to molecular pre- and post-natal diagnosis for MPS VI patients.