Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,609 recruiting studies in this area right now.
By phase
- Not applicable7,632
- Phase 4472
- Phase 2469
- Phase 3439
- Phase 1350
- Phase 1/Phase 2160
- Phase 2/Phase 387
Top conditions
- Stroke797
- Heart Failure534
- Hypertension388
- Cardiovascular Diseases373
- Coronary Artery Disease363
- Multiple Myeloma327
- Atrial Fibrillation259
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke139
- Pulmonary Hypertension104
- Myocardial Infarction97
- Congenital Heart Disease84
- Peripheral Arterial Disease79
- Stroke, Ischemic78
- Aortic Valve Stenosis76
- Obesity74
- Acute Coronary Syndrome73
Leading sponsors
- Mayo Clinic93
- Assistance Publique - Hôpitaux de Paris88
- National Taiwan University Hospital68
- China National Center for Cardiovascular Diseases60
- Second Affiliated Hospital, Zhejiang University, School of Medicine58
- Beijing Tiantan Hospital53
- Insel Gruppe AG, University Hospital Bern49
- Massachusetts General Hospital49
- Yonsei University48
- Johns Hopkins University45
Where studies are running
- California453
- Alabama196
- Arizona181
- Massachusetts173
- New York168
- Florida140
- Texas122
- Maryland118
- Minnesota117
- Illinois112
Recruiting studies9,609 total
- NCT05539781Recruiting
Blood flow and brain function monitoring after carotid procedure
This trial studies how blood flow and brain function change after a carotid artery revascularization procedure (opening a narrowed carotid artery). It may help doctors understand what to expect after treatment, especially in people with significant artery narrowing.
Beijing, Beijing MunicipalityAges 18–85 - NCT01091480Recruiting
French heart ultrasound study for hypertrophic cardiomyopathy
This is an observational study (it mainly tracks what happens over time) for people with thickened heart muscle due to hypertrophic cardiomyopathy. You may be eligible if an echocardiogram (heart ultrasound) shows the required thickness and you don’t have certain heart valve disease.
ParisAges 15 years+ - NCT05094284Recruiting
Heart stent registry for adults needing coronary stenting
This registry enrolls adults who are about to get a heart stent and have significant blockage in their coronary arteries. It aims to collect real-world information about stenting for different types of heart conditions, which may help improve future care.
Shatin, New TerritoriesAges 18 years+ - NCT03492528Recruiting
Heart care study for people starting cancer treatment
This study follows adults who are referred to a heart (cardio-oncology) specialist before starting cancer treatment. It may help doctors better understand heart outcomes in people with cancer and improve how heart risks are managed early.
MarseilleAges 18 years+ - NCT04076150Recruiting
Testing a new valve placed through a blood vessel
This study checks whether an “investigational” transcatheter aortic valve is safe and works well for people with severe, calcified aortic stenosis (a stiff, narrowed heart valve). It may help improve valve function and symptoms, but you must meet specific heart, scan, and health-status requirements.
KrakowAges 70 years+ - NCT05550077Recruiting
Imaging study for narrowed brain arteries after stroke
This trial uses a detailed eye/brain imaging test (optical coherence tomography) to study people with significantly narrowed brain arteries after certain stroke-like events. It may help researchers better understand and monitor this condition to improve care.
Beijing, Beijing MunicipalityAges 18 years+ - NCT04669548Recruiting
Accuryn monitoring study for people having heart surgery
This registry collects information from patients who are monitored with the Accuryn system during heart surgery and their ICU stay. It helps researchers learn from the system’s signals to better understand patient care around cardiac procedures.
Los Angeles, CaliforniaAges 18 years+ - NCT04312451Recruiting
Study of severe leg blood-flow problems after a procedure
This study follows adults with very poor blood flow to the foot or leg (with wounds or severe pain) who are having a revascularization procedure to improve circulation. It may help doctors understand outcomes after treatment and improve care for people with critical limb ischemia.
ParisAges 18 years+ - NCT05563376Recruiting
Clinic visit for people with Fontan heart circulation
This study is for people born with a single-ventricle heart condition who now live with a Fontan circulation. It mainly focuses on having a dedicated clinic visit (“Fontan clinic session”) and checking how that care works for you.
ErlangenAges 6–60 - NCT02850588Recruiting
Track outcomes after carotid stent or surgery
This study follows people who need a procedure to treat narrowed carotid arteries, comparing results after either surgery (CEA) or a less invasive procedure (TCAR). It mainly looks at patient safety and outcomes, which can help improve future care.
Chicago, IllinoisAges 18 years+ - NCT03852407RecruitingPhase 2
Two kinds of conditioning before matched stem cell transplant
This trial compares two reduced-intensity conditioning regimens before you receive stem cells from a donor who matches your HLA type. It aims to find which approach works better and is safer for certain blood cancers.
AntwerpAges 18–75 - NCT05423860Recruiting
HALO prostate study for men with early prostate cancer
This trial studies HALO, a new “human analytics” approach, in men with early-stage prostate cancer. It may help doctors better assess or guide care using MRI and biopsy findings, before or around initial treatment.
Indian Wells, CaliforniaAges 45–90 - NCT04443439Recruiting
MRI study to assess stroke risk from carotid narrowing
This study looks at how dangerous carotid artery narrowing (blood vessels in the neck that supply the brain) might be, using CT and MRI information. It may help doctors better judge stroke risk for people with mild, moderate, or severe narrowing.
Xi'anAges Any age - NCT04990297Recruiting
MRI test to better predict risk in dilated heart muscle
This trial uses a heart MRI to measure details in people with dilated cardiomyopathy and reduced pumping strength. It aims to use these MRI findings to better predict your future heart risk and guide care.
Beijing, Beijing MunicipalityAges Any age - NCT05595226Recruiting
Ultrasound-guided mitral valve repair to improve heart outcomes
This study looks at whether using a special heart ultrasound during surgery (called RT3D-TEE) can lead to better results for people having mitral valve repair. It’s mainly for certain types of chronic mitral valve leakage.
Beijing, Beijing MunicipalityAges 18–80 - NCT02208869Recruiting
Registry for inherited high cholesterol (familial hypercholesterolemia)
This registry collects information from people with inherited high cholesterol to better understand the condition and care needs. You may be invited to share blood and medical test results, especially your cholesterol and related health history.
ChelyabinskAges 7–80 - NCT03367286Recruiting
Tests clot-mapping scans to predict recovery after stroke
This study compares two types of clot/brain-bleeding risk imaging scans to see which better predicts recovery in people with ischemic stroke. If you qualify and get the right timing and scan results, the trial may help doctors choose the best way to predict your prognosis.
HangzhouAges Any age - NCT05453877Recruiting
Brain scan and health data study using a long-term cohort
This study uses existing health records and then collects or uses brain imaging (CT or MRI) along with basic health measurements. It may help researchers learn patterns in brain images that relate to health or disease risk in people from the Kailuan group.
Beijing, Beijing MunicipalityAges 18–90 - NCT05553886RecruitingPhase 3
Tablets for chronic heart failure with low pumping strength
This Phase 3 study tests whether S086 tablets can improve treatment for people with chronic heart failure where the heart pumps weakly. You may be eligible if your heart failure symptoms are moderate to severe and your condition is stable on current medicines, but not if you’ve recently had certain heart events or can’t take related blood-pressure/heart drugs.
Shenzhen, GuangdongAges 18 years+ - NCT05610631Recruiting
Switzerland heart-lung pressure registry for people with PH
This is a registry that collects information from people who have pulmonary hypertension (high blood pressure in the lungs). It helps researchers better understand the condition and may support future studies.
ZurichAges Any age - NCT04603404Recruiting
Imaging tests to find and predict HFpEF risk
This study uses different heart imaging tests to help screen for HFpEF (heart failure with preserved pumping strength), make the diagnosis, and estimate your future risk. You may benefit by getting a clearer diagnosis and a better risk picture based on the scans.
Beijing, Beijing MunicipalityAges Any age - NCT05009433Recruiting
Exercise plans in pregnancy and afterward for mom and baby health
This study compares two types of exercise—short, intense intervals versus moderate steady activity—during pregnancy and looks at effects on mothers and children. It also checks how participants do on health, fitness, and well-being tests before, during, and after pregnancy.
Gdansk, Pomeranian VoivodeshipAges 18–45 - NCT05610566Recruiting
HighLife valve replacement for severe leaking mitral valve
This trial studies a new catheter-based valve replacement system for people with moderate to severe, or severe, mitral valve regurgitation (a leaky mitral valve). It aims to check whether the procedure is safe and can improve heart function compared with expected care.
Suzhou, JiangsuAges 18 years+ - NCT05617456Recruiting
Test new ablation technology for treating irregular heart rhythm
This study tests advanced technology to improve how atrial fibrillation (AFib) is treated with a heart ablation procedure. It may help patients who are already advised to have AFib ablation by seeing how well the approach works in real clinical practice.
PisaAges Any age
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,609 recruiting cardiology studies from the U.S. registry right now, out of 14,617 we cover in this area in total.
- What does “Heart & circulation” cover here?
- Heart disease, blood pressure, and disorders of the blood vessels and circulation. We group each study into heart & circulation based on the conditions it studies, so you can scan the whole therapeutic area at once and drill into a specific condition.
- How do I find a heart & circulation trial near me?
- Use the search to filter heart & circulation studies by location and eligibility. Every Clin2 trial page explains the criteria in plain English and offers a short, optional pre-screen for a fit read — the study team makes the final decision.
Other specialties
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- Immune system & allergy
- Women’s health & pregnancy
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- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
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- Ear, nose & throat
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov; specialty groupings are derived from each study’s conditions. Talk with your doctor about whether a specific trial is right for you.