Research Article Details

Article ID: A01778
PMID: 34621052
Source: Nat Med
Title: Aramchol in patients with nonalcoholic steatohepatitis: a randomized, double-blind, placebo-controlled phase 2b trial.
Abstract: Nonalcoholic steatohepatitis (NASH), a chronic liver disease without an approved therapy, is associated with lipotoxicity and insulin resistance and is a major cause of cirrhosis and hepatocellular carcinoma. Aramchol, a partial inhibitor of hepatic stearoyl-CoA desaturase (SCD1) improved steatohepatitis and fibrosis in rodents and reduced steatosis in an early clinical trial. ARREST, a 52-week, double-blind, placebo-controlled, phase 2b trial randomized 247 patients with NASH (n&#8201;=&#8201;101, n&#8201;=&#8201;98 and n&#8201;=&#8201;48 in the Aramchol 400&#8201;mg, 600&#8201;mg and placebo arms, respectively; NCT02279524 ). The primary end point was a decrease in hepatic triglycerides by magnetic resonance spectroscopy at 52 weeks with a dose of 600&#8201;mg of Aramchol. Key secondary end points included liver histology and alanine aminotransferase (ALT). Aramchol 600&#8201;mg produced a placebo-corrected decrease in liver triglycerides without meeting the prespecified significance (-3.1, 95% confidence interval (CI) -6.4 to 0.2, P&#8201;=&#8201;0.066), precluding further formal statistical analysis. NASH resolution without worsening fibrosis was achieved in 16.7% (13 out of 78) of Aramchol 600&#8201;mg versus 5% (2 out of 40) of the placebo arm (odds ratio (OR)&#8201;=&#8201;4.74, 95% CI&#8201;=&#8201;0.99 to 22.7) and fibrosis improvement by &#8805;1 stage without worsening NASH in 29.5% versus 17.5% (OR&#8201;=&#8201;1.88, 95% CI&#8201;=&#8201;0.7 to 5.0), respectively. The placebo-corrected decrease in ALT for 600&#8201;mg was -29.1&#8201;IU&#8201;l-1 (95% CI&#8201;=&#8201;-41.6 to -16.5). Early termination due to adverse events (AEs) was <5%, and Aramchol 600 and 400&#8201;mg were safe, well tolerated and without imbalance in serious or severe AEs between arms. Although the primary end point of a reduction in liver fat did not meet the prespecified significance level with Aramchol 600&#8201;mg, the observed safety and changes in liver histology and enzymes provide a rationale for SCD1 modulation as a promising therapy for NASH and fibrosis and are being evaluated in an ongoing phase 3 program.
DOI: 10.1038/s41591-021-01495-3