Ionis' Olezarsen Priority Review for Severe Hypertriglyceridemia

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FDA has accepted for priority review an Ionis Pharmaceuticals supplemental NDA for olezarsen for treating severe hypertriglyceridemia (sHTG). It's currently approved as Tryngolza for familial chylomicronemia syndrome in the U.S. The agency set a user fee review action target date of 6/30.

Ionis said the submission’s acceptance was seen as recognition of an "urgent need" for better options. Current therapies offer limited benefits against recurrent acute pancreatitis attacks, which carry serious long-term risks, it says. Olezarsen could become the first treatment proven to reduce these potentially life-threatening events.

The submission is based on data from the Phase 3 CORE (NCT05079919; n=617) and CORE2 (NCT05552326; n=446) trials, according to the company. Olezarsen, given as 50 mg or 80 mg subcutaneous injections every four weeks, cut triglyceride levels by up to 72% versus placebo at six months, the data show. It also reduced pancreatitis events by 85%, with nearly 90% of patients reaching levels under 500 mg/dL — below the pancreatitis risk threshold. Safety and tolerability were favorable, it says.

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