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Updated: May 11, 2026

In Vitro Enzyme Measurement to Test Pharmacological Chaperone Responsiveness in Fabry and Pompe Disease
Published on: December 20, 2017
Improvement of dysphagia in a child affected by Pompe disease treated with enzyme replacement therapy
Insights
Enzyme replacement therapy (ERT) improved dysphagia in a Pompe disease patient. Videofluoroscopic Swallowing Study confirmed normal swallowing after 36 months of ERT.
Area of Science:
- Biochemistry
- Neurology
- Genetics
Background:
- Pompe disease (PD) is a rare metabolic myopathy caused by alpha-glucosidase deficiency.
- Dysphagia is a common complication in PD, significantly impacting patient quality of life.
- Enzyme replacement therapy (ERT) with alglucosidase alfa is the standard treatment for PD, but its effect on dysphagia is unknown.
Observation:
- A 6-year-old boy with PD presented with severe oral stage dysphagia (Grade 1).
- The patient received ERT with alglucosidase alfa for 36 months.
- Videofluoroscopic Swallowing Study (VFSS) was used to assess swallowing function at baseline and after treatment.
Findings:
- Baseline VFSS revealed complete incoordination of oral swallowing, graded as DSS Grade 1.
- After 36 months of ERT, VFSS showed normal swallowing function, graded as DSS Grade 0.
- ERT demonstrated a significant positive impact on swallowing ability in this PD patient.
Implications:
- ERT may be an effective treatment for dysphagia in Pompe disease patients.
- VFSS is a valuable diagnostic and monitoring tool for swallowing disorders in PD.
- Further research is warranted to confirm these findings in a larger cohort.
Aim:
Dysphagia is a known complication in Pompe Disease (PD), a severe metabolic myopathy due to alpha-glucosidase deficiency. Enzyme replacement therapy (ERT) with alglucosidase alfa is the only approved therapy for PD. Presently no data are available on the effects of ERT on dysphagia in PD patients. The aim of this work is to evaluate the course of this complication in a 6 years old boy affected by PD after treatment with ERT.
Methods:
Dysphagia was assessed by Videofluoroscopic Swallowing Study (VFSS) at baseline, before the start of ERT and after 36 months of therapy. We used the Dysphagia Severity Rating Scale (DSS) to define the severity grade of dysphagia.
Results:
VFSS performed at baseline revealed complete incoordination of oral stage swallowing which was classified as a grade 1 dysphagia according to DSS. After 36 months of treatment VFSS revealed normal swallowing, classified as grade 0 by DSS.
Conclusion:
Our results suggest that ERT is effective in improving dysphagia. VFSS may be a useful tool to investigate and monitor swallowing disorders in patients affected by PD.
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