This is a multi-center, double-blind, Phase 3 study in up to 60 patients with FCS. Participants will be randomized in a 2:1 ratio to receive Olezarsen or matching placebo in a 53-week treatment period. The length of participation in the study is approximately 74 weeks, which includes an up to 8-week screening period, a 53-week treatment period, and a 13-week post-treatment evaluation period. Following the treatment period, eligible patients may have the option of enrolling in an open label extension study.
The purpose of the study is to evaluate the efficacy of Olezarsen as compared to placebo on the percent change in fasting triglycerides (TG) from baseline.