Date: 2011-02-18
Type of information: Results
phase: 2
Announcement: results - three year follow up data
Company: Genzyme (USA - MA), a Sanofi company (France)
Product: eliglustat tartrate
Action
mechanism: specific inhibitor of glucosylceramide synthase.
Disease: Gaucher's disease
Therapeutic area: Rare diseases - Genetic diseases
Country:
Trial details:
Latest
news: Genzyme has announced three-year follow-up data from patients enrolled in the phase 2 clinical trial for its investigational oral therapy for Gaucher disease type 1 known as eliglustat tartrate. Sustained or further improvements were observed across all endpoints, including bone disease, at the three-year timepoint. The results were presented for the first time this week at the Lysosomal Disease Network WORLD Symposium in Las Vegas, Nevada. Eliglustat tartrate continued to show robust clinical response through three years: The study also analyzed the clinical response of patients in the phase 2 trial with respect to achieving therapeutic goals. Due to the heterogeneity of Gaucher disease, therapeutic goals were previously developed by experts involved in the treatment of Gaucher patients to assess their response to enzyme replacement therapy (ERT). Most patients dosed with eliglustat tartrate met established therapeutic goals for hemoglobin, platelets, spleen volume and liver volume, demonstrating progressive and clinically meaningful responses in multiple organ systems. At three years, 100 percent of patients met at least 3 of the 4 therapeutic goals developed for hematologic and organ volume parameters. The three-year data also included analyses that suggest eliglustat tartrate positively impacts indicators of bone disease through three years of follow up. These indicators include bone mineral density in the lumbar spine, as measured by dual energy x-ray absorptiometry (DXA), and dark marrow signal in the femur, as visualized by magnetic resonance imaging (MRI). Dark marrow reflects the infiltration of lipid-laden Gaucher cells into bone marrow. Specifically: The most common adverse events (AEs) reported in greater than 2 patients through three years included viral infections (six patients), urinary tract infections and upper respiratory infections (4 patients each), headache, increased blood pressure, diarrhea and abdominal pain (three patients each). Eight drug-related AEs, including one serious event, were reported in six patients. Most AEs overall and all drug-related AEs were considered mild. The largest number of AEs was reported during the first 3 months of treatment.
Genzyme previously reported that the eliglustat tartrate phase 2 trial had met its primary endpoint at one year, and that data demonstrated continued improvement through two years. The primary composite endpoint was a clinically meaningful response in at least two of three endpoints: improvements in spleen size, hemoglobin and platelet levels. The study has continued with 19 patients through three years. The extension phase of this trial is still ongoing.