Heart energy boost? MRI study tests new drug in thickened heart muscle
NCT ID NCT07332767
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a new medication (mavacamten) can improve the energy levels of the heart muscle in people with obstructive hypertrophic cardiomyopathy, a condition where the heart wall thickens and blocks blood flow. Researchers will use a special MRI scan to measure the heart's energy score before and after treatment. The goal is to understand how the drug works, not to test if it cures the disease. About 20 adults with confirmed obstructive HCM will take part.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Apr 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The cohort consists of adults diagnosed with symptomatic obstructive hypertrophic cardiomyopathy (oHCM) who are clinically eligible for and planning to initiate treatment with mavacamten.
- Ages
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18 to 99 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * at least 18 years of age and * Have a confirmed diagnosis of oHCM that is not solely explained by abnormal loading conditions such as significant hypertension or valvular disease * Qualify for mavacamten therapy by exhibiting a peak Left Ventricular Outflow Tract (LVOT) gradient of ≥ 50mmHg at rest or with provocation, New York Heart Association (NYHA) functional class II or III symptoms, and a baseline Left Ventricular Ejection Fraction (LVEF) of ≥ 55% Exclusion Criteria: * HCM phenocopies such as cardiac amyloidosis or Fabry's disease * Undergone a septal reduction therapy (myectomy or ablation) within the preceding 6 months * Any contraindications to mavacamten (e.g., baseline LVEF \< 55%, pregnancy/breastfeeding) * Inability to safely undergo a cardiac MRI, such as having non-compatible metal implants or severe claustrophobia
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Experimental pill aims to ease thick heart muscle symptoms
- Massive HCM database aims to unlock better heart care
- Heart drug swap tested for safer symptom control
- Real-World HCM drug use under the microscope