ANN ARBOR - Esperion (Nasdaq: ESPR) and Otsuka Pharmaceutical Co., Ltd (Otsuka) announced today that the primary endpoint was achieved in the Phase 3 trial in Japan for bempedoic acid as a potential treatment for patients with hypercholesterolemia.

The trial demonstrated statistically significant outcomes on the primary endpoint for bempedoic acid and highlighted its potential future value to patients in Japan.

Bempedoic acid, created by Esperion Therapeutics, Inc. (Esperion), has a novel mechanism of action that inhibits a cholesterol synthesis pathway by acting on ATP (adenosine triphosphate) citrate lyase, a citrate-degrading enzyme in the liver. Bempedoic acid is marketed for the treatment of hypercholesterolemia and cardiovascular risk reduction in several regions of the world, including the United States and Europe. In 2020, Otsuka acquired exclusive development and commercialization rights for bempedoic acid in Japan from Esperion and is currently developing it domestically.

This Phase 3 trial (NCT05683340) was conducted as a placebo-controlled, randomized, multicenter, double-blind, parallel-group comparative study in 96 patients with high LDL cholesterol and in whom satins have insufficient effect or cannot be tolerated. Trial participants were administered either 180 mg of bempedoic acid or a placebo, orally, once a day, for 12 weeks to evaluate the efficacy and safety of bempedoic acid.

In the preliminary results, the percentage change from baseline in LDL-C at Week 12, the primary endpoint, was -25.25%% in the group receiving bempedoic acid placebo group and -3.46% in the placebo group, demonstrating positive outcomes with statistical significance compared to placebo (p

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