Alnylam Pharma Completing Rolling NDA Submission

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Alnylam Pharmaceuticals says it will complete its NDA rolling submission for givosiran, indicated for treating acute hepatic porphyria (AHP) after reporting that the ENVISION Phase 3 study met its primary efficacy endpoint and the majority of secondary endpoints. Specifically, givosiran met the primary endpoint of reduction in the annualized rate of composite porphyria attacks relative to placebo, and achieved statistically significant results for five of nine secondary endpoints, the company says. The therapy’s safety and tolerability profile is “encouraging,” Alnylam says, especially in this high unmet disease.

 

“Patients living with AHP experience debilitating and sometimes life-threatening neurovisceral attacks as well as chronic disease manifestations which negatively impact their quality of life,” it explains.

 

Study adverse events were reported in 43/48 (89.6%) of givosiran and 37/46 (80.4%) of placebo patients, and serious adverse events were reported in 10/48 (20.8%) of givosiran and 4/46 (8.7%) of placebo patients, Alnylam says. Adverse events experienced in greater than 10% of givosiran patients and seen more frequently compared to placebo were: nausea, injection site reactions, chronic kidney disease and fatigue.

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