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Gingival overgrowth in Pompe disease: a case report
J Pieter de Gijt1, Carine I van Capelle, J Wolter Oosterhuis
1Department of Oral and Maxillofacial Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.
Enzyme replacement therapy (ERT) has improved survival for Pompe disease. This case report details an 8-year-old patient, highlighting that glycogen storage may not directly cause gingival overgrowth in Pompe disease.
Area of Science:
- Metabolic disorders
- Genetics
- Rare diseases
Background:
- Pompe disease (glycogen storage disease type 2) is a rare inherited metabolic disorder.
- It results from acid α-glucosidase deficiency, leading to glycogen accumulation.
- Infantile Pompe disease is severe, often fatal within the first year without treatment.
Purpose of the Study:
- To report a case of a long-term survivor with infantile Pompe disease on enzyme replacement therapy (ERT).
- To investigate the cause of massive gingival overgrowth in this patient.
- To explore the relationship between glycogen accumulation and gingival overgrowth in Pompe disease.
Main Methods:
- Case report of an 8-year-old female patient with infantile Pompe disease.
- Surgical reduction of gingival overgrowth.
- Histopathological examination of gingival tissue.
Main Results:
- The patient survived for 8 years on ERT, presenting with tetraplegia and massive gingival overgrowth.
- Histopathology revealed glycogen accumulation in arterial smooth muscle cells but not significantly in fibroblasts.
- Immature collagen and mild chronic inflammation were observed in the gingival connective tissue.
Conclusions:
- Glycogen storage is unlikely to be the sole direct cause of gingival overgrowth in this Pompe disease patient.
- Chronic inflammation, gingival dryness, or minor fibroblast glycogen accumulation may contribute to gingival overgrowth.
- This case highlights complex manifestations in long-term Pompe disease survivors on ERT.
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