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  • Title: Pompe disease: design, methodology, and early findings from the Pompe Registry.
    Author: Byrne BJ, Kishnani PS, Case LE, Merlini L, Müller-Felber W, Prasad S, van der Ploeg A.
    Journal: Mol Genet Metab; 2011 May; 103(1):1-11. PubMed ID: 21439876.
    Abstract:
    Pompe disease is an autosomal recessive, progressive, debilitating, and often fatal neuromuscular disorder caused by deficiency of lysosomal acid α-glucosidase (GAA). It is characterized by the accumulation of glycogen in muscle tissue that leads to progressive muscle weakness and loss of function. It presents as a broad spectrum of clinical phenotypes, with varying rates of progression, symptom onset, degree of organ involvement, and severity. The Pompe Registry represents worldwide data collection on this rare and clinically heterogeneous disease. This report describes the design, methodology, and early findings from the Registry and presents an overview of the Registry population over a five-year period from its inception in September 2004 through September 2009. Among the 742 patients from 28 countries in the Registry, 70% (517/742) reported symptom onset >12 months of age and 23% (170/742) reported symptom onset ≤12 months of age. Seventy-eight percent (582/742) of registry patients have received enzyme replacement therapy. Overall, Registry data appear to be consistent with smaller natural history studies in terms of symptoms and disease course in classical infantile Pompe disease (≤12 months of age with cardiomyopathy) and late-onset Pompe disease (>12 months of age). In addition, a subset of patients with symptom onset ≤12 months of age do not have cardiomyopathy (14.7%); these patients appear to have a later age at first symptoms and diagnosis than their peers with cardiomyopathy. As the largest dataset on Pompe disease to date, the Pompe Registry will serve to improve recognition of the disease, enhance understanding of the variable disease course, and offer insights into treated and untreated disease course.
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