Enzyme replacement therapy with galsulfase for mucopolysaccharidosis VI: clinical facts and figures.
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Mucopolysaccharidosis VI (MPS VI) is an inheritable, clinically heterogeneous lysosomal storage disorder that develops due to a deficiency in the arylsulfatase B (ASB) enzyme. This deficiency impairs the stepwise degradation of glycosaminoglycans (GAGs) resulting in the accumulation of partially degraded GAGs in tissues and organs throughout the body. A relatively novel therapy for MPS VI is enzyme replacement therapy (ERT) with human recombinant ASB (galsulfase). This manuscript gives an overview of all clinical trials that have evaluated the efficacy and safety of ERT with galsulfase in patients with MPS VI to date and discusses the outcome of these trials. (+info)
Enzyme replacement therapy for mucopolysaccharidosis VI (Maroteaux-Lamy syndrome): experience in Hong Kong.
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Mucopolysaccharidosis VI (Maroteaux-Lamy syndrome) is a very rare inherited lysosomal storage disease. We evaluated the efficacy and safety of weekly infusions of recombinant human arylsulfatase B as enzyme replacement therapy for two patients in whom this condition was advanced. The primary outcome variables were the distance walked in a 6-minute walk test, forced vital capacity, and ejection fraction. The secondary outcome variables were the number of stairs climbed in a 3-minute stair climbing test, joint mobility, urinary glycosaminoglycan excretion, auto-continuous positive airway pressure study and liver size. After 24 weeks of treatment, patient A walked 40 m (36%) and patient B walked 66 m (58%) more in the walk test than at baseline. After 48 weeks, in patient A the corresponding improvements were 142 m (129%) in the walk test and 33 stairs (60%) in the 3-minute stair climbing test, and in patient B the respective improvements were 198 m (174%) and 77 stairs (140%). There was a significant decline in urinary glycosaminoglycan excretion and improvement in range of motion of joints in both patients. The auto-continuous positive airway pressure study revealed improvements in patient A, while other efficacy variables remained static. There were no drug-related adverse events or allergic reactions reported during and after the infusions of recombinant human arylsulfatase B. Recombinant human arylsulfatase B significantly improves endurance and reduces urinary glycosaminoglycan excretion. The drug is generally safe and well tolerated. (+info)
Anti-TNF-alpha therapy enhances the effects of enzyme replacement therapy in rats with mucopolysaccharidosis type VI.
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A multinational, multidisciplinary consensus for the diagnosis and management of spinal cord compression among patients with mucopolysaccharidosis VI.
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