REZDIFFRA MAESTRO-NASH-OUTCOMES Interim
Pre-specified interim of the Phase 3 cardiovascular and liver outcomes trial of REZDIFFRA in MASH. REZDIFFRA is currently approved on biopsy endpoints; outcomes data is required for label expansion into cirrhotic patients and for stronger payor coverage.
What’s at stake
REZDIFFRA (resmetirom) is a once-daily oral thyroid hormone receptor-beta (THR-β) agonist developed by Madrigal Pharmaceuticals and the first FDA-approved drug therapy for MASH — a progressive liver disease in which fat accumulation triggers inflammation and fibrosis. By selectively activating THR-β in liver cells, resmetirom increases fatty acid oxidation and reduces liver fat without the cardiovascular side effects associated with systemic thyroid hormone activation. Approved in March 2024 on biopsy endpoints in non-cirrhotic patients, Madrigal is now running a cardiovascular and liver outcomes trial to support a cirrhotic label expansion and stronger payer coverage.
No primer in glossary yet.
- MASHdiseaseMetabolic-Associated Steatohepatitis
Liver inflammation caused by fat accumulation, with metabolic risk factors. Renamed from NASH in 2023. Resmetirom (REZDIFFRA) is the only approved therapy.
How Appr readouts in NASH / MASH have landed.
Reference, not prediction. We surface the historical record so you can read it yourself. We never extrapolate to the upcoming event.
Competitive landscape
| Drug | Company | Modality | Mechanism | Phase | Next catalyst |
|---|---|---|---|---|---|
| efruxifermin | AKRO | biologic | FGF21 analog Fc-fusion | CONFERENCE · May 26 |
Prior MDGL reactions to Interim events
| Date | Headline | Outcome | 1W | 1M | 6M |
|---|---|---|---|---|---|
| May 2025 | REZDIFFRA — Phase 3 Interim — Stopped for Efficacy | positive | +11.8% | +11.2% | +14.9% |
Disclosure trail
- Apr 4, 2026·26d agopinned · highest confidenceHIGH confPRQTRtop claimQ4'26
“The pre-specified interim analysis for the MAESTRO-NASH-OUTCOMES Phase 3 trial of REZDIFFRA is expected in the fourth quarter of 2026.”
conf 86%via llm