Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,989 recruiting studies in this area right now.
By phase
- Not applicable7,969
- Phase 2481
- Phase 4481
- Phase 3447
- Phase 1361
- Phase 1/Phase 2163
- Phase 2/Phase 387
Top conditions
- Stroke845
- Heart Failure564
- Hypertension400
- Cardiovascular Diseases389
- Coronary Artery Disease370
- Multiple Myeloma332
- Atrial Fibrillation267
- Ischemic Stroke200
- Atrial Fibrillation (AF)141
- Acute Ischemic Stroke139
- Pulmonary Hypertension100
- Myocardial Infarction99
- Congenital Heart Disease86
- Stroke, Ischemic85
- Peripheral Arterial Disease83
- Acute Coronary Syndrome82
- Obesity80
- Aortic Valve Stenosis79
Leading sponsors
- Mayo Clinic94
- Assistance Publique - Hôpitaux de Paris91
- National Taiwan University Hospital74
- China National Center for Cardiovascular Diseases59
- Beijing Tiantan Hospital52
- Riphah International University51
- Second Affiliated Hospital, School of Medicine, Zhejiang University51
- Massachusetts General Hospital50
- Insel Gruppe AG, University Hospital Bern49
- Johns Hopkins University47
Where studies are running
- California466
- Alabama197
- Massachusetts182
- Arizona173
- New York162
- Florida144
- Maryland120
- Minnesota120
- Illinois119
- Texas118
Recruiting studies9,986 total
- NCT06209359RecruitingPhase 1
Testing a second diuretic for heart failure patients
This trial tests whether adding a second type of diuretic (water pill) can help people with heart failure who don't respond well to their current diuretic. It aims to find better ways to manage fluid buildup.
New Haven, ConnecticutAges 18 years+ - NCT06210633Recruiting
Clot removal trial for very large strokes
This trial tests a procedure called endovascular thrombectomy (clot removal through a catheter) for people with very large strokes. It aims to see if removing the clot can help even when a large part of the brain is already damaged.
Xiangtan, HunanAges 18 years+ - NCT06211712Recruiting
Drug plus clot removal for large vessel stroke
This study tests whether adding a drug called human urinary kallidinogenase to standard clot-removal therapy helps people recover better after a large-vessel stroke. If you qualify, you would receive the drug or a placebo by IV along with the procedure, and doctors will monitor your recovery.
ShanghaiAges 18 years+ - NCT06211868Recruiting
Early heart disease risk study for adults 40-70
This study looks at whether changing your immune system, fats, and metabolism can lower your risk of early heart disease. It is for people with an intermediate to high risk score but who have not yet had a heart attack or stroke.
SingaporeAges 40–70 - NCT06212219Recruiting
EEG brain training to help arm recovery after stroke
This study tests whether a brain-training technique called neurofeedback can improve arm movement in people who recently had a stroke. It uses an EEG cap to measure your brain activity while you do arm exercises, helping you relearn how to move your affected arm.
ToulouseAges 18–99 - NCT06212193Recruiting
Trillium Stent Graft for Leaky Heart Valve
This trial tests a new stent graft device (Trillium) placed through a vein to help fix a severely leaky tricuspid valve without open-heart surgery. It is for people with severe symptoms who cannot have or have not improved with standard treatments.
Thousand Oaks, CaliforniaAges 18–85 - NCT06212479Recruiting
Whole-body MRI for Preventive Health Screening
This study uses whole-body MRI to see if it can find health issues early in people without symptoms. The goal is to learn if this scan can help predict clinically important conditions in routine preventive care.
Watertown, MassachusettsAges 18 years+ - NCT06212674RecruitingPhase 4
Stroke prevention: combined heart procedure for atrial fibrillation
This study tests a combined approach — a catheter ablation to fix the irregular heartbeat (atrial fibrillation) and a device to close the left atrial appendage — in people who recently had a stroke caused by a clot. The goal is to prevent future strokes and reduce the need for long-term blood thinners.
Katowice, Upper SilesiaAges 18–75 - NCT06212791Recruiting
Exercise MRI Study of Heart Function After Ablation
This study uses an exercise MRI to look at how the upper chambers of the heart (left atrium) work after ablation for atrial fibrillation. It may help doctors understand if the procedure improves heart function during exercise.
Richmond, VirginiaAges 18 years+ - NCT06213272Recruiting
Exercise and reading therapy for stroke-related reading problems
This study combines exercise with a targeted reading therapy to help people who have trouble reading after a stroke. It aims to see if this approach improves reading accuracy.
West Orange, New JerseyAges 18–85 - NCT06214767Recruiting
Study of treatment choices for untreated brain cavernous malformations
This study looks at how to best treat people with untreated cerebral cavernous malformations (a cluster of abnormal blood vessels in the brain). It compares outcomes between those who have surgery and those who are monitored with regular check-ups, and will follow participants for a long time to see how they do.
Beijing, Beijing MunicipalityAges Any age - NCT06214195RecruitingPhase 3
Shengmai San to prevent heart damage from breast cancer therapy
This trial tests if a traditional Chinese medicine called Shengmai San can protect the heart during chemotherapy and targeted therapy for HER2-positive breast cancer. Patients take the supplement alongside standard treatment to see if it reduces the risk of heart problems.
Hangzhou, ZhejiangAges 18 years+ - NCT06214429Recruiting
Shear wave test for carotid plaque stiffness
This trial uses a special ultrasound technique called shear wave elastography to measure how stiff fatty deposits (plaques) are in your neck arteries. It aims to see whether plaque stiffness can help doctors better understand your stroke risk.
Botucatu, São PauloAges 18 years+ - NCT06215118RecruitingPhase 1
Combination therapy for relapsed or refractory multiple myeloma
This trial tests a new combination of two drugs, elranatamab and iberdomide, for people whose multiple myeloma has returned or stopped responding to previous treatments. The goal is to see if this combination can help control the disease.
Coral Gables, FloridaAges 18 years+ - NCT06215248Recruiting
Heart function study in leg artery disease patients
This trial uses ultrasound to check how well the heart pumps in people with blocked leg arteries. It aims to find early signs of heart strain that standard tests might miss.
TartuAges 35–85 - NCT06215378RecruitingPhase 3
Protamine Sulfate to Reverse Heparin After TAVI
This trial tests whether giving protamine sulfate after a TAVI procedure (aortic valve replacement through the leg) to reverse the blood thinner heparin is safe and effective. It may help reduce bleeding risk for patients.
Paris, Île-de-France RegionAges 18 years+ - NCT06215625Recruiting
Smart arm rehab for stroke and spinal cord injury
This study tests a smart home-based upper limb rehabilitation program for people with stroke or spinal cord injury. It uses technology to help improve arm and hand movement.
TainanAges 20–79 - NCT06215989Recruiting
Low-dose colchicine for acute coronary syndrome
This trial tests whether a low dose of the anti-inflammatory drug colchicine can help people who have recently had a heart attack or unstable angina. It aims to see if colchicine reduces the risk of future heart problems.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06216678Recruiting
Can healthy diets with plant oils improve heart health?
This study tests if adding plant oils to a healthy diet can improve cholesterol and other heart health markers in people with moderately high cholesterol. It involves following a specific meal plan and having your health monitored over several weeks.
University Park, PennsylvaniaAges 25–60 - NCT06216769Recruiting
Pill-in-the-pocket blood thinners after AF ablation
This study tests a 'pill-in-the-pocket' approach for blood thinners after a catheter ablation for atrial fibrillation. Instead of taking a daily blood thinner, you may only take it when needed, which could reduce the risk of bleeding while still preventing strokes.
SeoulAges 19–89 - NCT06216847Recruiting
Heart artery disease study: comparing imaging and function tests
This study looks at people with coronary artery disease (narrowed or blocked heart arteries) to see how different imaging and function tests can help predict outcomes. If you've had a heart procedure or test showing blockages, you might be eligible.
Shenyang, LiaoningAges 18 years+ - NCT06216821Recruiting
Personalized guide for timing blood-thinner reduction after a heart attack
This study tests whether a personalized score (OPT-CAD) can help decide the best time to stop or reduce blood-thinning medication in people who have had a heart attack and a stent placed. It aims to balance preventing future heart issues while lowering the risk of bleeding.
Shenyang, LiaoningAges 18–80 - NCT06217302RecruitingPhase 3
Sotagliflozin for kidney protection in type 1 diabetes
This study tests whether sotagliflozin (a pill that helps control blood sugar and protects the kidneys) can slow down kidney function decline in people with type 1 diabetes and diabetic kidney disease. You may qualify if you have had type 1 diabetes for at least 8 years, have moderate kidney damage, and are on standard treatments.
Stanford, CaliforniaAges 18–75 - NCT06217588Recruiting
LCAT Deficiency Natural History Study
This study tracks people with LCAT deficiency over time to learn more about how the condition affects the body. It does not test a treatment, but helps researchers understand the disease better so they can design future studies.
Philadelphia, PennsylvaniaAges Any age
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,989 recruiting cardiology studies from the U.S. registry right now, out of 15,300 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
- Cancer
- Brain & nervous system
- Hormones & metabolism
- Mental health
- Digestive system
- Lungs & breathing
- Immune system & allergy
- Women’s health & pregnancy
- Skin
- Blood & lymphatic
- Kidney & urinary
- Infections
- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
- Eyes & vision
- 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.