AstraZeneca rare disease therapy improves bone health in Phase III HPP study

29 June 2026

Pharma major AstraZeneca (LSE: AZN) has reported positive Phase III data for efzimfotase alfa, showing that the investigational enzyme replacement therapy improved bone health in treatment-naive children with hypophosphatasia (HPP), a rare inherited metabolic disease.

Results from the MULBERRY trial, presented at the 12th International Conference on Children’s Bone Health in Montreal, showed a statistically significant and clinically meaningful improvement in radiographic global impression of change (RGI-C) score at week 25 compared with placebo.

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