The oral thyroid hormone receptor beta-selective agonist resmetirom (Madrigal Pharmaceuticals) in both 80-mg and 100-mg doses was superior to placebo at achieving resolution of nonalcoholic steatohepatitis (NASH) and improving liver fibrosis, according to the results of the ongoingphase 3 MAESTRO-NASH trial published on February 7 in The New England Journal of Medicine.
Although certain findings from this trial were initially presented at the European Association for the Study of the Liver Congress 2023, the publication of the full peer-reviewed paper represents a potentially significant milestone in the management of NASH, a disease for which there is currently no approved pharmacologic treatment.
“Data for the first 1,050 patients from the MAESTRO-NASH trial, together with data from completed resmetirom trials, support the potential for resmetirom to provide benefit to patients with NASH and liver fibrosis,” wrote the authors, led by principal investigator Stephen Harrison, MD, chairman of Pinnacle Clinical Research and Summit Clinical Research in San Antonio, Texas.
The trial uses the earlier nomenclature of NASH and nonalcoholic fatty liver disease (NAFLD). An international consensus group has since changed these terms to metabolic dysfunction–associated steatohepatitis (MASH) and metabolic dysfunction–associated steatotic liver disease (MASLD), respectively.
A Closer Look at MAESTRO-NASH
Investigators enrolled 996 participants who were randomly assigned to receive placebo or resmetirom at 80 mg or 100 mg. Patients were followed for 52 weeks, at which point, they were assessed for the dual primary endpoints of NASH resolution (including a reduction in the NAFLD activity score by ≥ 2 points) with no worsening of fibrosis and an improvement (reduction) in fibrosis by at least one stage with no worsening of the NAFLD activity score.
They observed that patients receiving resmetirom had a significant improvement across both doses and both primary endpoints.
NASH resolution with no worsening of fibrosis was achieved in 25.9% and 29.9% of the patients in the 80-mg and 100-mg groups, respectively, vs 9.7% on placebo. Fibrosis improved by at least one stage with no worsening of the NAFLD activity score in 24.2% and 25.9% of patients in the increasing-dose groups, respectively, compared with 14.2% on placebo (P
The effects with resmetirom were consistent across key subgroups, regardless of baseline fibrosis stage; baseline NAFLD activity score; or type 2 diabetes status, age, and sex.
“Multiple non-invasive tests for NASH, steatosis, and fibrosis (including blood biomarkers and imaging) showed a similar direction of effects favoring resmetirom treatment, which supports the findings for the primary end points,” Harrison and colleagues wrote.
The majority of patients with NASH also have diabetes. As a result, patients with NASH are known to have a high cardiovascular risk and mortality. However, MAESTRO-NASH investigators reported that compared with those receiving placebo, patients on resmetirom experienced reductions in levels of a broad range of atherogenic lipids and lipoproteins, including low-density lipoprotein (LDL) cholesterol, non–high-density lipoprotein cholesterol, triglycerides, apolipoprotein B, and lipoprotein(a). These findings were consistent with earlier studies of resmetirom.
From baseline to week 24, LDL cholesterol levels were reduced by -13.6% in the 80-mg and by -16.3% in the 100-mg resmetirom groups compared with 0.1% in the placebo group (P
More patients in the 100-mg group than in the 80-mg or placebo groups discontinued the trial due to adverse events (6.8% vs 1.8% and 2.2%, respectively). Diarrhea and nausea occurred more frequently in the resmetirom groups than in the placebo group. Serious adverse events occurred with similar incidences across the 100-mg, 80-mg, and placebo groups (12.7%, 10.9%, and 11.5%, respectively).
Although to date the MAESTRO-NASH trial lacks clinical outcomes, over its planned duration of 54 months, investigators will accrue data on liver-related outcomes, including progression to cirrhosis. Likewise, long-term safety data will become available with the trial’s completion.
Disclosure forms provided by the authors are available with the full text of the NEJM paper at NEJM.org.
Source link : https://www.medscape.com/viewarticle/nejm-study-highlights-resmetiroms-efficacy-nash-liver-2024a10002q1?src=rss
Publish date : 2024-02-07 22:00:00
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