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Improvement of Fabry Disease-Related Gastrointestinal Symptoms in a Significant Proportion of Female Patients Treated with Agalsidase Beta: Data from the Fabry Registry.

Wilcox WR, JIMD Rep. 2018;38:45-51.


Abstract

Fabry disease, an X-linked inherited lysosomal storage disorder, is caused by mutations in the gene encoding α-galactosidase, GLA. In patients with Fabry disease, glycosphingolipids accumulate in various cell types, triggering a range of cellular and tissue responses that result in a wide spectrum of organ involvement. Although variable, gastrointestinal symptoms are among the most common and significant early clinical manifestations; they tend to persist into adulthood if left untreated. To further understand the effects of sustained enzyme replacement therapy (ERT) with agalsidase beta on gastrointestinal symptoms in heterozygotes, a data analysis of female patients enrolled in the Fabry Registry was conducted. To be included, females of any age must have received agalsidase beta (average dose 1.0 mg/kg every 2 weeks) for at least 2.5 years. Measured outcomes were self-reported gastrointestinal symptoms (abdominal pain, diarrhea). Outcomes at baseline and last follow-up, and their change from baseline to last follow-up, were assessed. Relevant data were available for 168 female patients. Mean age at the start of ERT was 43 years and mean treatment duration 5.7 years. Baseline pre-treatment abdominal pain was reported by 45% of females and diarrhea by 39%. At last follow-up, 31% reported abdominal pain (p < 0.01) and 27% diarrhea (p < 0.01). The results of this Fabry Registry analysis suggest that while on sustained treatment with agalsidase beta (1.0 mg/kg every 2 weeks), both abdominal pain and diarrhea improved in many female patients with Fabry disease.

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