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
- NCT04574037Recruiting
Predicting arm recovery after stroke
This study tries to predict how well your arm movement may improve after a stroke. It uses brain and/or nerve testing (like MRI and TMS) and could help doctors plan the best rehabilitation for you.
ParisAges 18 years+ - NCT05932472RecruitingPhase 4
Compare taking aspirin in the morning vs bedtime
This trial studies whether taking your daily aspirin in the morning or at bedtime changes heart and circulation outcomes. It is meant to see if timing matters for people who already take aspirin every day.
HellerupAges 18 years+ - NCT06243653Recruiting
Heart microvessel function test for heart failure recovery
This trial looks at how tiny blood vessels in the heart affect improvement in heart pumping strength for people with heart failure. It tests whether a special procedure during heart catheterization can predict recovery.
SeoulAges 19 years+ - NCT06246162RecruitingPhase 1/Phase 2
Mitoxantrone liposome combo for high-risk multiple myeloma
This trial tests a liposomal form of mitoxantrone combined with other drugs for people with aggressive multiple myeloma (high-risk or spread outside the bone). The goal is to see if this approach helps control the cancer better.
Nantong, JiangsuAges 18–70 - NCT04602325Recruiting
Blood and brain injury biomarker study for inherited metabolic disorders
This trial studies blood and other measurable signs (biomarkers) that may reflect brain injury after certain inherited metabolic conditions. Results may help doctors better detect and understand brain effects from these illnesses, especially episodes that affect the brain.
Washington D.C., District of ColumbiaAges 7–18 - NCT06236568Recruiting
Liver transplant study for liver cancer patients
This study tests a special way to preserve donated livers before transplant to see if it reduces the chance of liver cancer coming back after surgery.
Modena, MOAges 18 years+ - NCT03111459Recruiting
Endovascular repair for large thoracoabdominal aortic aneurysms
This trial studies a minimally invasive (endovascular) procedure to repair large or risky aneurysms in the aorta near the chest and abdomen. It may help prevent aneurysm rupture and improve outcomes compared with other possible treatments.
Cincinnati, OhioAges 18 years+ - NCT07858708Enrolling by invitation
Vision problems after brain injury
This study looks at vision problems that can happen after a brain injury, like a stroke, traumatic brain injury, or brain tumor. The researchers want to understand how these vision issues affect daily life, which could help improve care.
Prague, Česká RepublikaAges 18–85 - NCT07874191Recruiting
Eye blood flow study in pregnant women with preeclampsia
This study uses a special eye scan to compare blood flow in the back of the eye between pregnant women with preeclampsia, healthy pregnant women, and healthy non-pregnant women. The goal is to see if preeclampsia affects eye blood vessels, which might help with early detection.
Muğla, MenteşeAges 18–45 - NCT06250595Recruiting
European rare blood disorder registry
This study is building a registry of people with rare blood diseases. By joining, you help doctors learn more about these conditions and improve future care.
Barcelona, CataloniaAges Up to 100 years - NCT02141308Recruiting
OCT eye imaging for rare retinal and choroid diseases
This trial studies rare diseases affecting the retina or choroid using detailed eye scans (OCT). It may help doctors better understand how these conditions look in the eye and how imaging findings relate to vision.
Portland, OregonAges 7–100 - NCT06249347Recruiting
New ablation approach for persistent atrial fibrillation with stroke risk
This trial tests a new type of catheter ablation (using heat to create scar lines in the heart) for people with persistent atrial fibrillation who have a higher risk of stroke or bleeding. It aims to see if this approach can help prevent strokes and reduce the need for long-term blood thinners.
Wenzhou, ZhejiangAges 18 years+ - NCT06253962Recruiting
Can carotid artery scans predict heart disease?
This study looks at whether ultrasound scans of the carotid artery (the main artery in your neck) can help predict blockages in the heart arteries. If you are getting both a carotid ultrasound and a heart angiogram, you may be able to join.
ShanghaiAges 14–90 - NCT06255678Recruiting
Angio-based check of heart artery treatment effect
This trial tests if special software can check the result of a balloon or stent procedure by looking at the X-ray movie of your heart arteries. It may help doctors decide if more treatment is needed.
WarsawAges 18 years+ - NCT06244940Recruiting
Genetic testing study for heart defects in pregnancy
This study tests a new way to find genetic causes of congenital heart disease (a heart problem found before birth) using samples from amniocentesis or chorionic villus sampling. It may help parents get a clearer diagnosis and plan for their baby's care.
San Diego, CaliforniaAges 18 years+ - NCT06259760Recruiting
Kidney risk after low-blood-pressure anesthesia for jaw surgery
This study looks at factors that may increase the risk of kidney injury during jaw surgery when a special low-blood-pressure anesthesia technique is used. It helps doctors understand who is more likely to have complications.
Kaohsiung City, Sanmin DistAges 18–65 - NCT00455104Recruiting
Fabry disease registry for Canadians and eligible adults
This study is a national registry that collects health and medical information from people with Fabry disease. It helps researchers better understand the condition and plan future care and studies.
Calgary, AlbertaAges 5–85 - NCT05599438Recruiting
Fitness and drug use study in recreational athletes
This study follows recreational athletes to understand how past and current anabolic-androgenic steroid (AAS) use relates to fitness changes over time. If you have used these substances in the past (and stopped more than 3 months ago), or you have never used them, you may be able to join.
CopenhagenAges 18 years+ - NCT06260579Recruiting
Home exercise program after kidney transplant
This study tests whether a home exercise program, especially with higher intensity, can help people recover better after a kidney transplant. You would exercise on a stationary bike at home, with guidance from a team.
GhentAges 18 years+ - NCT06261866Recruiting
Heart imaging for moderate blockages in stable heart disease
This trial tests whether combining two advanced imaging tests (FFR and OCT) can help doctors better decide treatment for moderate blockages in heart arteries. If you have stable chest pain or a positive stress test and a moderate narrowing, this study may help guide your care.
WarsawAges 18 years+ - NCT07856199Recruiting
Checking pelvic arteries in men with heart disease
This study uses a special ultrasound probe during heart catheterization to look at the arteries in the pelvis that supply the penis. It aims to see if plaque buildup in these arteries is linked to erectile dysfunction in men who have heart disease.
Mexico City, Mexico CityAges 18 years+ - NCT07858799Recruiting
Study of a new device for heart failure with reduced pumping ability
This trial tests a new device that creates a small shunt (passage) in the heart to help relieve pressure and improve symptoms in people with heart failure and a weak heart pump. The goal is to see if the device is safe and helpful for patients like you.
Cologne, GermanyAges 18 years+ - NCT06250790Recruiting
Heart Artery Check for Leg Artery Disease Patients
This trial uses a special CT scan (coronary CTA with HeartFlow analysis) to look for hidden blockages in the heart arteries of people who recently had a leg artery procedure. It may help detect heart problems early so they can be treated.
RigaAges 50 years+ - NCT05693857Recruiting
Understanding heart risk from test results and questionnaires
This study looks at how well questionnaires and cholesterol test results match a person’s future heart risk. It may help researchers improve how doctors spot who is at higher risk and who can benefit from prevention.
ShatinAges 40–90
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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- Hormones & metabolism
- Mental health
- Digestive system
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- 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.