Ultragenyx96-week data shows GENGLYCOS reduces cornstarch intake, supporting its efficacy and safety.

Ultragenyx Pharmaceutical Inc. announced the publication of 96-week data from its Phase 3 study of GENGLYCOS AAV gene therapy for glycogen storage disease type Ia in The Journal of Inherited Metabolic Disease, showing that participants achieved a mean reduction in daily cornstarch intake of 61% while maintaining glycemic control. The study met its primary endpoint at Week 48, with DTX401-treated patients experiencing a 41% reduction in cornstarch compared to 10% for placebo, and by Week 96, 67% of participants in both the original and crossover groups eliminated at least one nighttime cornstarch dose, with 33% and 42% respectively eliminating nighttime dosing entirely. Patient-reported outcomes showed that 83% of DTX401-treated participants met or exceeded their own expectations for meaningful cornstarch reduction at Week 48, and the therapy was generally well tolerated with an acceptable safety profile. GENGLYCOS was recently approved by the FDA for patients ages eight and older with GSDIa.
Ultragenyx96-week data shows GENGLYCOS reduces cornstarch intake, supporting its efficacy and safety.