Arrowhead's Redemplo cut triglycerides 79%-81% in two Phase 3 trials for sHTG, boosting the company's shares by about 25%.

To analysts, the drug’s apparent safety and effects on both triglyceride levels and pancreatitis cases should make it competitive with a rival Ionis therapy.

Arrowhead Pharmaceuticals' triglycerides-buster hit the "best-case scenario" in two studies Wednesday.