Enzyme replacement therapy for Anderson-Fabry disease

Regina P El Dib1, Gregory M Pastores

  • 1Department of Surgery, St. Joseph's Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON, Canada, L8N 4A6.

Insights

Enzyme replacement therapy for Anderson-Fabry disease shows limited evidence. Agalsidase alfa did not significantly reduce glycosphingolipid levels, while agalsidase beta demonstrated some improvements in specific markers, but overall trial quality is low.

Area of Science:

  • Biochemistry
  • Genetics
  • Pharmacology

Background:

  • Anderson-Fabry disease is an X-linked genetic disorder impacting glycosphingolipid metabolism.
  • It leads to progressive renal insufficiency, cardiovascular complications, and reduced survival rates in affected males and carriers.

Purpose of the Study:

  • To assess the efficacy and safety of enzyme replacement therapy (ERT) for Anderson-Fabry disease.
  • Comparisons were made against placebo, no intervention, or other treatments.

Main Methods:

  • A systematic search was conducted across multiple databases including Cochrane Library, MEDLINE, EMBASE, and LILACS.
  • Included were randomized controlled trials (RCTs) of agalsidase alfa or beta in patients diagnosed with Anderson-Fabry disease.

Main Results:

  • Agalsidase alfa trials showed non-significant changes in glycosphingolipid levels but reported improvements in pain scores and quality of life in some analyses.
  • Agalsidase beta trials indicated significant reductions in glycosphingolipid levels in kidney and heart, and for composite endpoints, but not for mortality.
  • No deaths were reported in agalsidase alfa trials; pain was not assessed. No significant difference in death was found for agalsidase beta.

Conclusions:

  • The current evidence from five small, low-quality RCTs is insufficient to robustly support the use of agalsidase alfa or beta for treating Anderson-Fabry disease.
  • Further high-quality research is needed to establish the definitive benefits and risks of ERT in this condition.
Abstract

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