Safety Study of Recombinant Adeno-Associated Virus Acid Alpha-Glucosidase to Treat Pompe Disease

Summary

Pompe disease is an inherited condition of acid alpha-glucosidase (GAA) deficiency resulting in lysosomal accumulation of glycogen in all tissues. Glycogen accumulation leads to muscle dysfunction and profound muscle weakness. A wide spectrum of disease is characteristic and the most severe patients have cardiorespiratory failure, often fatal in the first two years of life. Researchers have developed a way to introduce the normal GAA gene into muscle cells with the expectation that the GAA protein will be produced at levels sufficient to reduce glycogen accumulation. This study will evaluate the safety of the experimental gene transfer procedure in individuals with GAA deficiency. The study will also determine what dose may be required to achieve improvement in measures of respiratory function.

Timeline

Start

2010-09

Primary completion

2015-12

Completion

2015-12

Publications

• Background Fraites TJ Jr, Schleissing MR, Shanely RA, Walter GA, Cloutier DA, Zolotukhin I, Pauly DF, Raben N, Plotz PH, Powers SK, Kessler PD, Byrne BJ. Correction of the enzymatic and functional deficits in a model of Pompe disease using adeno-associated virus vectors. Mol Ther. 2002 May;5(5 Pt 1):571-8. doi: 10.1006/mthe.2002.0580.
• Background Mah C, Cresawn KO, Fraites TJ Jr, Pacak CA, Lewis MA, Zolotukhin I, Byrne BJ. Sustained correction of glycogen storage disease type II using adeno-associated virus serotype 1 vectors. Gene Ther. 2005 Sep;12(18):1405-9. doi: 10.1038/sj.gt.3302550.
• Background Mah C, Pacak CA, Cresawn KO, Deruisseau LR, Germain S, Lewis MA, Cloutier DA, Fuller DD, Byrne BJ. Physiological correction of Pompe disease by systemic delivery of adeno-associated virus serotype 1 vectors. Mol Ther. 2007 Mar;15(3):501-7. doi: 10.1038/sj.mt.6300100. Epub 2007 Jan 23.
• Background Pauly DF, Fraites TJ, Toma C, Bayes HS, Huie ML, Hirschhorn R, Plotz PH, Raben N, Kessler PD, Byrne BJ. Intercellular transfer of the virally derived precursor form of acid alpha-glucosidase corrects the enzyme deficiency in inherited cardioskeletal myopathy Pompe disease. Hum Gene Ther. 2001 Mar 20;12(5):527-38. doi: 10.1089/104303401300042447.
• Background Conlon TJ, Erger K, Porvasnik S, Cossette T, Roberts C, Combee L, Islam S, Kelley J, Cloutier D, Clement N, Abernathy CR, Byrne BJ. Preclinical toxicology and biodistribution studies of recombinant adeno-associated virus 1 human acid alpha-glucosidase. Hum Gene Ther Clin Dev. 2013 Sep;24(3):127-33. doi: 10.1089/humc.2013.147.
• Background Byrne BJ. Pathway for approval of a gene therapy orphan product: treading new ground. Mol Ther. 2013 Aug;21(8):1465-6. doi: 10.1038/mt.2013.157. No abstract available.
• Background Corti M, Elder M, Falk D, Lawson L, Smith B, Nayak S, Conlon T, Clement N, Erger K, Lavassani E, Green M, Doerfler P, Herzog R, Byrne B. B-Cell Depletion is Protective Against Anti-AAV Capsid Immune Response: A Human Subject Case Study. Mol Ther Methods Clin Dev. 2014;1:14033. doi: 10.1038/mtm.2014.33.
• Results Smith BK, Collins SW, Conlon TJ, Mah CS, Lawson LA, Martin AD, Fuller DD, Cleaver BD, Clement N, Phillips D, Islam S, Dobjia N, Byrne BJ. Phase I/II trial of adeno-associated virus-mediated alpha-glucosidase gene therapy to the diaphragm for chronic respiratory failure in Pompe disease: initial safety and ventilatory outcomes. Hum Gene Ther. 2013 Jun;24(6):630-40. doi: 10.1089/hum.2012.250.
• Byrne BJ, Falk DJ, Clement N, Mah CS. Gene therapy approaches for lysosomal storage disease: next-generation treatment. Hum Gene Ther. 2012 Aug;23(8):808-15. doi: 10.1089/hum.2012.140.

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