Ultragenyx Gene Therapy OK’d for Glycogen Storage Disease
FDA has granted Ultragenyx Pharmaceutical accelerated approval for its Genglycos (pariglasgene brecaparvovec-opnr) for adults and children eight years and older with glycogen storage disease type Ia (GSDIa). The action marks the first gene therapy approval for Ultragenyx and the company’s fifth FDA approval overall. Ultragenyx also received an FDA priority review voucher for gaining the approval.
Genglycos is indicated to reduce daily cornstarch intake as an adjunct to nutritional management in patients with GSDIa. The indication was approved based on the drug’s demonstrated ability to reduce daily cornstarch requirements, and continued approval is contingent on verification of clinical benefit in a confirmatory study.
The genetic metabolic disorder is caused by a deficiency of an enzyme required for the liver to release glucose into the bloodstream. The resulting inability to adequately regulate blood glucose can cause potentially life-threatening hypoglycemia and other complications, the company says.
As part of the approval, Ultragenyx says it has “agreed to provide two years of safety and efficacy clinical data from open-label commercial treatment of 50 patients and 20 control patients through enhancement of its existing GSDIa Disease Monitoring Program (DMP). The control group will consist of patients who sought commercial treatment but cannot be treated with Genglycos due to the presence of anti-AAV8 antibodies.”