Question · Q4 2025
Luca Issi with RBC Capital Markets inquired about Arrowhead's strategy to demonstrate acute pancreatitis (AP) benefit for Plozasiran, specifically asking if the SHASTA III and IV trials, powered for triglyceride reduction, are sufficient or if the event-driven SHASTA V trial is the primary vehicle, noting recent design changes to SHASTA V.
Answer
Bruce Given, Chief Medical Officer for Arrowhead Pharmaceuticals, explained that SHASTA III and IV were powered for triglyceride reduction, not AP, but are designed to allow pooling for AP evaluation. He clarified that SHASTA V is specifically designed with AP as the primary endpoint and its design was recently broadened to include a more generalizable high-risk SHTG population, serving as a "belt and suspenders" approach.
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