This is a Phase 3, multi-center, placebo-controlled study of up to 1312 participants with hypertriglyceridemia and atherosclerotic cardiovascular disease. The study consists of 3 periods: 1) Screening Period: Week -8 to Week -1 (up to 8 weeks); 2) Treatment Period up to Week 53; and 3) Post-Treatment Follow-up Period: Week 54 to Week 66 (13 weeks). Participants enrolled will receive olezarsen or placebo once every 4 weeks during the 53-week Treatment Period.~A coronary computed tomographic angiography (CTA) sub study will be performed to assess whether triglyceride lowering through inhibition of apoC-III protein synthesis may reduce coronary plaque progression.
The purpose of the study is to evaluate the effect of olezarsen on percent change in fasting triglyceride (TG) levels compared to placebo in participants with hypertriglyceridemia and atherosclerotic cardiovascular disease, or with severe hypertriglyceridemia.