Abstract:
:Mucopolysaccharidosis VI (MPS VI) is a rare autosomal recessive disorder caused by a deficiency of N-acetylgalactosamine-4-sulfatase (ARSB). Over 130 ARSB gene mutations have been identified thus far and most mutations are unique to individual families. We aimed to analyze the spectrum of mutations in the ARSB gene responsible for the disorder in Poland, Belarus and Baltic States. Twenty one families with MPS VI patients, in whom diagnosis was confirmed biochemically and enzymatically, were studied. Direct sequencing of patient genomic DNA was used to identify ARSB mutations. In total, fourteen different disease-causing mutations were found. Three novel mutations included insertion c.375_376insT, a missense mutation c.499G>A (p.G167R) and deletion/insertion c.750_754delinsCCTGAAGTCAAG. We also report 11 previously described mutations (p.A33V, p.W57C, p.Q88X, p.T92K, p.Q97X, p.R152W, p.R160Q, p.R160X, p.Y210C, p.Y266S, p.G302R). The mutation p.R152W was present at a high prevalence of 50% (21/42) the mutated alleles in this group of patients. High prevalence of p.R152W mutation in Poland, Belarus and Baltic States indicates a possible founder effect and suggests that screening for this mutation may be appropriate in MPS VI patients from this region. Our study has also provided evidence to support genotype-phenotype correlation.
journal_name
Mol Genet Metabjournal_title
Molecular genetics and metabolismauthors
Jurecka A,Piotrowska E,Cimbalistiene L,Gusina N,Sobczyńska A,Czartoryska B,Czerska K,Õunap K,Węgrzyn G,Tylki-Szymańska Adoi
10.1016/j.ymgme.2011.11.003subject
Has Abstractpub_date
2012-02-01 00:00:00pages
237-43issue
2eissn
1096-7192issn
1096-7206pii
S1096-7192(11)00420-3journal_volume
105pub_type
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