A Phase 1 interventional study of Resmetirom and Placebo in MASH - Metabolic Dysfunction-Associated Steatohepatitis and Heart Failure With Preserved Ejection Fraction (HFPEF), sponsored by Madrigal Pharmaceuticals, Inc.. Recruiting at 5 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-16.
Sponsored by Madrigal Pharmaceuticals, Inc. · Phase 1, Interventional, and Treatment
This Phase 1b multicenter randomized double-blind placebo-controlled study evaluates the safety, tolerability and hepatic pharmacodynamic effects of resmetirom in adults with metabolic dysfunction-associated steatohepatitis (MASH) and heart failure with preserved ejection fraction (HFpEF). Participants are randomized 2:1 to resmetirom or placebo for 24 weeks.
662 studies on the registry are indexed under Fatty Liver; 184 are open to participants now.
This study's planned enrollment of 90 is above the median of 60 across 431 interventional studies indexed under Fatty Liver.
Browse Fatty Liver studies →Madrigal Pharmaceuticals, Inc. is the lead sponsor of 21 studies on the registry; 5 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 1 (11%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Thyroid disease:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.
Criteria about it usually ask for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Reproductive potential
Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.
Criteria about it usually ask for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HbA1c
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will receive resmetirom orally once daily for 24 weeks. Resmetirom dose will be based on actual body weight: 80 mg once daily for participants weighing \<100 kg and 100 mg once daily for participants weighing ≥100 kg. Dose reduction by 20 mg will be implemented for concomitant use of a moderate CYP2C8 inhibitor, as specified in the protocol
Drug: Resmetirom
Participants will receive matching placebo orally once daily for 24 weeks.
Drug: Placebo
Resmetirom (80 mg or 100 mg orally once daily based on body weight)
Matching placebo orally once daily
Incidence of treatment-emergent adverse events (TEAEs)
Time frame: From first dose through End of Study follow-up (28 days after last dose)
Incidence of treatment-emergent serious adverse events (SAES)
Time frame: From first dose through End of Study follow-up (28 days after last dose)
Change from baseline in physical examination findings assessed by investigator physical examination
Physical examination findings will be assessed by the Investigator and include general appearance, skin, head and neck, heart, lungs, abdomen, extremities, and neuromuscular assessments. After Screening and successful Randomization, physical examinations may be targeted to evaluation of new symptoms or signs.
Time frame: Baseline to Week 24
Change from baseline in body temperature
Body temperature will be measure in °C, resting heart rate in beats per minute, respiratory rate in breaths per minute, systolic blood pressure in mmHg, and diastolic blood pressure in mmHg
Time frame: Baseline to Week 24
Change from baseline resting heart rate
Resting heart rate will be measured in beats per minute (bpm)
Time frame: Baseline to Week 24
Change from baseline in respiratory rate
Respiratory rate will be measured in breaths per minute.
Time frame: Baseline to Week 24
Change from baseline in seated systolic blood pressure
Resting seated systolic blood pressure will be measured in millimeters of mercury (mmHg)
Time frame: Baseline to Week 24
Change from baseline in seated diastolic blood pressure
Resting seated diastolic blood pressure will be measured in millimeters of mercury (mmHg)
Time frame: Baseline to Week 24
Change from baseline in PR interval on 12-lead ECG in milliseconds (ms)
Time frame: Baseline to Week 24
Change from baseline in QRS interval on 12-lead ECG in milliseconds (ms)
Time frame: Baseline to Week 24
Change from baseline in heart rate on 12-lead ECG in beats per minute (bpm)
Time frame: Baseline to Week 24
Change from baseline in RR interval on 12-lead ECG in milliseconds (ms)
Time frame: Baseline to Week 24
Change from baseline in QT interval on 12-lead ECG in milliseconds (ms)
Time frame: Baseline to Week 24
Change from baseline in QT interval corrected using Bazett's formula (QTcB) in milliseconds (ms)
Time frame: Baseline to Week 24
Change from baseline in QT interval corrected using Fridericia's formula (QTcF) in milliseconds (ms)
Time frame: Baseline to Week 24
Number of participants with clinically significant abnormalities in hematology laboratory parameters
Hematology laboratory parameters include hemoglobin, hematocrit, red blood cell count, white blood cell count, platelet count, red blood cell indices, and differential leukocyte counts. The number of participants with clinically significant abnormalities, as determined by the Investigator, will be summarized by treatment group.
Time frame: Baseline to Week 24
Number of participants with clinically significant abnormalities in blood chemistry laboratory parameters
Blood chemistry laboratory parameters include measures of hepatic function, renal function, glucose metabolism, pancreatic function, electrolytes, bilirubin, and serum proteins. The number of participants with clinically significant abnormalities, as determined by the Investigator, will be summarized by treatment group.
Time frame: Baseline to Week 24
Number of participants with clinically significant abnormalities in urinalysis parameters
Urinalysis parameters include pH, specific gravity, protein, glucose, ketones, bilirubin, blood, nitrite, urobilinogen, and leukocyte esterase. The number of participants with clinically significant abnormalities, as determined by the Investigator, will be summarized by treatment group.
Time frame: Baseline to Week 24
Percent change from baseline in liver fat content measured by MRI-Proton Density Fat Fraction (MRI-PDFF)
Time frame: Baseline to Week 24
Plan to share: No
No publications or documents are linked to this record.
Start is estimated for Sep 2026; primary completion for Nov 2027, 14 months later.
Of 21 phase 1 interventional studies under Fatty Liver, half reached primary completion within 33 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 47. This study's planned 14 months is below that.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Resmetirom
Madrigal Pharmaceuticals, Inc. →