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
- NCT07853261Recruiting
Balloon inflation study for coronary stent placement
This trial tests a special way of inflating a balloon after placing a stent in a blocked heart artery. It aims to improve how well the stent expands, which may help keep the artery open.
Changchun, JilinAges 18 years+ - NCT06424119Recruiting
Intensive vs traditional cardiac rehab study
This study compares two types of cardiac rehab programs—Intensive Cardiac Rehabilitation and traditional rehab—to see which helps reduce inflammation and improve health. If you've had a recent heart event or have stable heart failure, this trial might be a good fit.
Ypsilanti, MichiganAges 18 years+ - NCT04559425Recruiting
Registry study for immune-related serious slowed fetal heart rhythm
This study follows pregnancies where the baby has a serious immune-related heart rhythm problem (high-grade AV block). It collects information to better understand what happens during pregnancy and after delivery, especially when blood tests show anti-Ro/La antibodies.
Phoenix, ArizonaAges 16–50 - NCT06071741Recruiting
Heart stent procedure registry at UMC
This study is a registry that collects information from all patients who get a heart artery stent procedure at the University Medical Center of Ho Chi Minh City. It helps doctors learn more about how these procedures are done and how patients do over time.
Ho Chi Minh CityAges 18 years+ - NCT06365502Recruiting
Preventing future heart attacks with drug-coated balloon
This trial tests whether a balloon coated with medicine (drug-coated balloon) can prevent future heart attacks by treating high-risk plaques in arteries that are not the one that caused your current heart attack. You may qualify if you already had a stent placed and have another mildly blocked artery with certain vulnerable features.
Beijin, Beijing MunicipalityAges 18–80 - NCT06425848Recruiting
Heart failure monitoring study
This study looks at how a small monitor inside the blood vessel to the lungs helps manage heart failure. It aims to improve care for people with advanced heart failure.
La Jolla, CaliforniaAges 18–100 - NCT06425822Recruiting
Studying the left atrium in ventricular arrhythmia patients
This trial studies the upper left chamber of the heart (the left atrium) in people who have fast or irregular heartbeats from the lower chambers (ventricular arrhythmias). The goal is to see if there are specific patterns in the left atrium that might be linked to these arrhythmias, which could help tailor treatments in the future.
Jette, Brussels CapitalAges 18 years+ - NCT05080712Recruiting
Tracking how atrial fibrillation changes over time in young people
This study focuses on people who have atrial fibrillation (an irregular heartbeat) and whose diagnosis was made within the last year. It aims to understand how atrial fibrillation progresses, which could help guide better monitoring and future care.
StockholmAges 18–50 - NCT06401616RecruitingPhase 4
Stopping blood thinners after heart surgery for atrial fibrillation
This trial tests whether it is safe for patients with atrial fibrillation to stop taking blood thinners after they have had heart surgery, including closure of the left atrial appendage. The goal is to see if these patients can avoid long-term medication without increasing the risk of stroke.
Copenhagen, Capital RegionAges 18 years+ - NCT05740579Recruiting
Storing eggs in teens with Turner syndrome variants
This study looks at freezing and storing eggs (cryopreservation) in children and teens with Turner syndrome or related genetic variants. It may help preserve the chance of having biological children later, if you are able to undergo the study procedures safely.
AarhusAges 2–17 - NCT04646252Recruiting
Testing a blood-surface feature to prevent heart problems
This study looks at whether a healthy blood lining (the glycocalyx) can help predict and reduce the risk of major heart events in people who have not yet had heart disease. You may be asked to do screening tests and share health information to see how these factors relate to future risk.
Athens, AtticaAges 18–85 - NCT05851053Recruiting
Study of heart function years after breast cancer treatment
This study checks how well your heart works long after breast cancer treatment. If you joined the earlier de BLOC-I study, you may be invited for follow-up to understand long-term heart effects.
GroningenAges Any age - NCT06371937Recruiting
Heart and blood vessel disease biobank study
This study creates a collection of skin cells (turned into stem cells in a lab) from people with various heart and blood vessel conditions. It aims to find new ways to understand and treat these diseases.
London, OntarioAges 18–80 - NCT06431711Recruiting
Eye scan study for brain small vessel disease
This study uses a special eye scan (OCTA) to check the health of tiny blood vessels in the back of the eye. It may help doctors understand small vessel disease in the brain and find easier ways to monitor it.
Hangzhou, ZhejiangAges 35 years+ - NCT05779215Recruiting
Registry for acute stroke with blocked brain arteries
This study records information about people who have a new acute ischemic stroke caused by a blockage in a larger or medium-sized brain artery. It may help doctors better understand outcomes and care for this stroke type, using data from many patients.
Beijing, Beijing MunicipalityAges Any age - NCT05165095Recruiting
Remote monitoring checks for new pacemakers
This trial tests how well remote monitoring features in certain pacemakers work after implantation. It may help your care team spot issues earlier and improve the remote alert system.
KremsAges 18 years+ - NCT07850349Recruiting
Automatic ankle blood pressure test for leg artery disease
This study tests a new automated way to measure the blood pressure in your ankles, which helps doctors check for narrowed leg arteries. It is a pilot study, meaning it looks at whether this automatic method works well and is comfortable, which could make testing easier in the future.
HullAges 18 years+ - NCT07842770Recruiting
Magnetic brain stimulation to calm stress after heart attack
This trial tests whether magnetic brain stimulation (called TMS) can help calm the overactive stress response and reduce inflammation after a heart attack. If you've recently had a heart attack and your heart rate is fast, this treatment might aid your recovery.
Beijing, Beijing MunicipalityAges 30–75 - NCT07843979Recruiting
Testing a blood marker for nerve problems after carotid artery surgery
This study checks whether a blood protein called GFAP, which can rise when the brain is stressed or injured, helps predict nerve-related problems after carotid artery surgery. If you are having this surgery, your blood will be tested before and after to see if GFAP levels are linked to any complications.
Bursa, BursaAges 35–90 - NCT07843472RecruitingPhase 3
Petrelintide for weight loss in people with heart disease
This study tests a new medication called petrelintide to help people with overweight or obesity and heart disease lose weight. It may offer a new way to manage weight and improve heart health.
Anniston, AlabamaAges 40 years+ - NCT07844317Recruiting
AI eye check for diabetic retinopathy
This trial tests an AI system that automatically checks eye photos for signs of diabetic retinopathy, a diabetes complication that can harm vision. If you have diabetes, this study may help detect the condition earlier and prevent vision loss.
Jacksonville, FloridaAges 22 years+ - NCT06235385Recruiting
European study on multiple and mixed valve disease
This study looks at people with multiple or mixed heart valve disease (moderate or severe) using echocardiography. It aims to learn more about how these conditions affect patients and help guide future care.
Paris, Île-de-France RegionAges 18 years+ - NCT06004154Recruiting
Imaging follow-up for giant cell arteritis patients
This study follows up patients with giant cell arteritis (Horton's disease) using MRI and ultrasound to see how the disease and treatment affect blood vessels over time. It aims to improve understanding of the condition and your imaging results.
ParisAges 50 years+ - NCT05655897Recruiting
Clips for leaky mitral valve in high-surgery-risk heart patients
This trial studies whether a device called GeminiOne can safely and effectively repair a leaky mitral valve using a catheter-based “clip” technique. It may help patients who have moderate-to-severe or severe valve leakage but are considered too high-risk for open surgery.
Suzhou, JiangsuAges 18 years+
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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- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
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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.