Enzyme replacement therapy and intraepidermal innervation density in Fabry disease

Raphael Schiffmann, Peter Hauer, Barbara Freeman, Markus Ries, Leland J.C. Scott, Michael Polydefkis, Roscoe O. Brady, Justin C. McArthur, Kathryn Wagner

Research output: Contribution to journalArticlepeer-review

Abstract

We prospectively evaluated the effect of enzyme replacement therapy (ERT) on the intraepidermal nerve fiber density (IENFD) and thermal threshold in patients with Fabry disease, an X-linked disorder associated with a painful small-fiber neuropathy and decreased linear IENFD in a length-dependent pattern. Twenty-five hemizygous male patients with Fabry disease were enrolled in a 6-month, randomized, placebo-controlled ERT trial of 0.2 mg/kg of α-galactosidase A (agalsidase-alfa) every 2 weeks followed by an additional 12 months of open-label ERT for both populations. IENFD and thermal threshold were measured in the distal thigh at baseline, 6 months, and 18 months from initiation of the trial. We found no significant difference in IENFD between the treatment groups at 6 months. After an additional year of ERT, there was a significant reduction in IENFD in the patient group as a whole, attributable to the declining glomerular filtration rate. Thermal thresholds remained unchanged. We conclude that epidermal nerve fiber regeneration, as measured in the distal thigh, does not occur in this patient population after 12-18 months of ERT.

Original languageEnglish (US)
Pages (from-to)53-56
Number of pages4
JournalMuscle and Nerve
Volume34
Issue number1
DOIs
StatePublished - Jul 2006

Keywords

  • Epidermal innervation
  • Fabry disease
  • Pain
  • Small-fiber neuropathy

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

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