Ultragenyx and Mereo BioPharma Announce New Phase 2 Data from Phase 2/3 Orbit Study Demonstrating Sustained Reductions in Fracture Rates Following Treatment with Setrusumab (UX143) in Patients with Osteogenesis Imperfecta (OI)

14-month data show treatment with setrusumab resulted in a large, sustained 67% reduction in annualized fracture rate and persistent median annualized fracture rate of 0.00 (p=0.0014)

Treatment resulted in continued, substantial improvements in bone mineral density (BMD) with a mean increase from baseline of 22% (p