Aug 9, 2019

Variable clinical features and genotype-phenotype correlations in 18 patients with late-onset Pompe disease

Annals of Translational Medicine
Jousef Alandy-DyVirginia Kimonis

Abstract

Pompe disease is a lysosomal storage disorder caused by the deficiency of enzyme acid alpha-glucosidase (GAA) which results in accumulation of glycogen, particularly in the skeletal, cardiac, and smooth muscles. The late-onset form with symptoms presenting in childhood through adulthood, is characterized by proximal muscle weakness, respiratory insufficiency, and unlike the infantile-onset form often with no cardiac involvement. We report our experience with 18 adult patients (14 males/4 females) with Pompe disease, several of whom had unique findings and novel pathogenic variants. Patients ranged in ages from 22-74 years (mean 53.7 years) and were diagnosed at an age range of 11-65 years (mean 43.6 years), often after a history of progressive muscle disease of several years' duration. All 18 patients were treated with alglucosidase alfa (Lumizyme) and their response to treatment was monitored by measurements of their pulmonary function and muscle weakness, six-minute walk test (6MWT), and other functional studies. Genetic sequencing revealed that 16 out of 18 individuals had the common c.-32-13T>G splicing variant, and six patients, including two sibships had four novel pathogenic variants: c.1594G>A, c.2655_2656delCG, c.1951-...Continue Reading

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Mentioned in this Paper

Coil Device Component
Other Kyphoscoliosis and Scoliosis
Study
Enzyme Replacement Therapy
Lumizyme
Mice, Inbred BALB C
Aneurysm
Myopathy
Smooth Muscle
Cardiomyopathies

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