No significant effects of ethyl-eicosapentanoic acid on histologic features of nonalcoholic steatohepatitis in a phase 2 triaL

Arun J. Sanyal, Manal F. Abdelmalek, Ayako Suzuki, Oscar W. Cummings, Mario Chojkier

Research output: Contribution to journalArticle

157 Scopus citations


Background & Aims n-3 polyunsaturated fatty acids reduce insulin resistance, lipogenesis, and inflammation, which are features of nonalcoholic steatohepatitis (NASH). Ethyl-eicosapentanoic acid (EPA-E) is a synthetic polyunsaturated fatty acid that reduces hypertriglyceridemia. We report the final results of a phase 2b multicenter, prospective, double-blind, randomized, placebo-controlled trial of EPA-E for NASH. Methods Our study, performed at 37 sites in North America, included subjects with NASH and nonalcoholic fatty liver disease (NAFLD) activity scores ≥4, with minimum scores of 1 for steatosis and inflammation, along with either ballooning or at least stage 1a fibrosis. A total of 243 subjects were randomly assigned to groups given placebo (n = 75), low-dosage EPA-E (1800 mg/d; n = 82), or high-dosage EPA-E (2700 mg/d; n = 86) for 12 months. Subjects were examined at 4-week intervals for 3 months, 6-week intervals for the next 3 months, and every 3 months thereafter, until 1 month after the last dose was taken. Liver biopsies were collected 2 weeks after the last dose of EPA-E or placebo. The primary efficacy end point was NAFLD activity score ≤3, without worsening of fibrosis; or a decrease in NAFLD activity score by ≥2 with contribution from >1 parameter, without worsening of fibrosis, 1 year after the last dose of EPA-E or placebo was given. Results Similar proportions of subjects in each group met the primary end point (40%, 37%, and 35.9% for placebo, low-dosage, and high-dosage EPA-E, respectively). EPA-E had no significant effects on steatosis, inflammation, ballooning, or fibrosis scores. There were no significant effects on levels of liver enzymes, insulin resistance, adiponectin, keratin 18, high-sensitivity C-reactive protein, or hyaluronic acid. High-dosage EPA-E reduced levels of triglyceride (-6.5 mg/dL vs an increase of 12 mg/dL in the placebo group; P =.03). There were no treatment-related serious adverse events. Conclusions In a phase 2 trial, EPA-E had no significant effect on the histologic features of NASH. EPA-E reduced subjects' levels of triglyceride compared with placebo, without any increase in serious adverse events. Number: 01154985.

Original languageEnglish (US)
Pages (from-to)377-384.e1
Issue number2
StatePublished - Aug 2014


  • Ethyl All-Cis-5,8,11,14,17-Eicosapentaenoate
  • Metabolic Syndrome
  • Triglycerides

ASJC Scopus subject areas

  • Gastroenterology

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