Pompe disease: pathogenesis, molecular genetics and diagnosis

Area of Science:

• Genetics and Molecular Biology
• Rare Diseases
• Biochemistry

Background:

• Pompe disease (PD) is an inherited metabolic disorder caused by mutations in the acid alpha-1,4-glucosidase (GAA) gene.
• GAA enzyme deficiency results in lysosomal glycogen accumulation, primarily affecting muscle tissue.
• The condition presents with progressive muscle weakness and respiratory issues, varying by age of onset.

Purpose of the Study:

• To provide a comprehensive overview of Pompe disease.
• To highlight key aspects including pathogenesis, clinical features, and genetic underpinnings.
• To discuss diagnostic approaches, current therapies, and emerging biomarkers.

Main Methods:

• Literature review and synthesis of existing research on Pompe disease.
• Analysis of molecular genetics, including over 560 reported GAA gene mutations.
• Examination of clinical phenotypes, diagnostic criteria, and therapeutic strategies.

Main Results:

• Over 560 mutations in the GAA gene are associated with Pompe disease.
• PD manifests differently based on age of onset, affecting multiple organ systems.
• Autophagy and microRNAs (miRNAs) are being investigated for their roles and potential as biomarkers.

Conclusions:

• Early diagnosis of Pompe disease is critical to mitigate irreversible organ damage.
• Understanding the molecular basis and clinical spectrum is essential for managing PD.
• Further research into autophagy and miRNAs may offer new diagnostic and therapeutic avenues for Pompe disease.