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|Title:||Enzyme replacement therapy in mucopolysaccharidosis VI (Maroteaux-Lamy Syndrome)|
|Citation:||Journal of Pediatrics, 2004; 144(5):574-580|
|Paul Harmatz, Chester B Whitley, Lewis Waber, Ray Pais, Robert Steiner, Barbara Plecko, Paige Kaplan, Julie Simon, Ellen Butensky, John J Hopwood|
|Abstract:||<h4>Objectives</h4>To evaluate the safety and efficacy of weekly treatment with human recombinant N-acetylgalactosamine 4-sulfatase (rhASB) in humans with mucopolysaccharidosis type VI (MPS VI).<h4>Study design</h4>An ongoing Phase I/II, randomized, two-dose, double-blind study. Patients were randomized to weekly infusions of either high (1.0 mg/kg) or low (0.2 mg/kg) doses of rhASB. Six patients (3 male, 3 female; age 7-16 years) completed at least 24 weeks of treatment, five of this group have completed at least 48 weeks.<h4>Results</h4>No drug-related serious adverse events, significant laboratory abnormalities, or allergic reactions were observed in the study. The high-dose group experienced a more rapid and larger relative reduction in urinary glycosaminoglycan that was sustained through week 48. Improvements in the 6-minute walk test were observed in all patients with dramatic gains in those walking <100 meters at baseline. Shoulder range of motion improved in all patients at week 48 and joint pain improved in patients with significant pain at baseline.<h4>Conclusions</h4>rhASB treatment was well-tolerated and reduced lysosomal storage as evidenced by a dose-dependent reduction in urinary glycosaminoglycan. Clinical responses were present in all patients, but the largest gains occurred in patients with advanced disease receiving high-dose rhASB.|
|Keywords:||Humans; Mucopolysaccharidosis VI; N-Acetylgalactosamine-4-Sulfatase; Recombinant Proteins; Statistics, Nonparametric; Double-Blind Method; Dose-Response Relationship, Drug; Adolescent; Child; Female; Male|
|Appears in Collections:||Paediatrics publications|
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