Chinese hamster ovary cell-derived recombinant human acid alpha-glucosidase in infantile-onset Pompe disease.

Published

Journal Article

OBJECTIVE: To conduct an open-label, multinational, multicenter study examining the safety and efficacy of recombinant human acid alpha-glucosidase (rhGAA) in treatment of infantile-onset Pompe disease. STUDY DESIGN: We enrolled 8 infant patients who had Pompe disease with GAA activity <1% of normal, cardiomyopathy, and hypotonia. In the 52-week initial phase, rhGAA was infused intravenously at 10 mg/kg weekly; an extension phase continued survivors' treatment with 10 to 20 mg/kg of rhGAA weekly or 20 mg/kg every 2 weeks for as long as 153 weeks. Safety measurements included adverse events, laboratory tests, and anti-rhGAA antibody titers. Efficacy evaluations included survival, ventilator use, echocardiograms, growth, and motor and cognitive function. RESULT: After 52 weeks of treatment, 6 of 8 patients were alive, and 5 patients were free of invasive ventilator support. Clinical improvements included ameliorated cardiomyopathy and improved growth and cognition. Five patients acquired new motor milestones; 3 patients walked independently. Four patients died after the initial study phase; the median age at death or treatment withdrawal for all patients was 21.7 months, significantly later than expected for patients who were not treated. Treatment was safe and well tolerated; no death was drug-related. CONCLUSION: rhGAA improved ventilator-free survival, cardiomyopathy, growth, and motor function in patients with infantile-onset Pompe disease compared with outcomes expected for patients without treatment.

Full Text

Duke Authors

Cited Authors

  • Kishnani, PS; Nicolino, M; Voit, T; Rogers, RC; Tsai, AC-H; Waterson, J; Herman, GE; Amalfitano, A; Thurberg, BL; Richards, S; Davison, M; Corzo, D; Chen, YT

Published Date

  • July 2006

Published In

Volume / Issue

  • 149 / 1

Start / End Page

  • 89 - 97

PubMed ID

  • 16860134

Pubmed Central ID

  • 16860134

International Standard Serial Number (ISSN)

  • 0022-3476

Digital Object Identifier (DOI)

  • 10.1016/j.jpeds.2006.02.035

Language

  • eng

Conference Location

  • United States