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
- NCT05734378Recruiting
Study aims to predict outcomes in small blood vessel brain disease
This trial is looking at how brain “small blood vessel disease” changes over time and what outcomes to expect. If you have certain symptoms or scan findings from this condition, your care team may compare your prognosis to help guide future treatment planning.
BernAges 16 years+ - NCT05044208Recruiting
Test heart ultrasound and monitoring clues for atrial fibrillation
This study looks at heart ultrasound pictures and heart-rhythm recordings to predict who may develop atrial fibrillation (AF) after a stroke or TIA. If you qualify, your results may help doctors better spot people at higher risk earlier.
TullnAges 18 years+ - NCT05758844Recruiting
Testing a safer backup method during endovascular aneurysm repair
This trial studies whether adding an extra “safe-line” step during endovascular repair of large aortic aneurysms can reduce damage to the spinal cord. It may help lower the risk of spinal cord-related complications during or after the procedure.
PadovaAges 18–100 - NCT05532631Recruiting
Compare stent procedure versus bypass surgery for weak heart
This study compares two ways to improve blood flow to the heart—using stents through a catheter or bypass surgery—in people with heart muscle weakness and blockages in more than one coronary artery. It may help identify which approach leads to better outcomes over at least two years.
Créteil, Val De MarneAges 18 years+ - NCT02923440Recruiting
Donate DNA and help build a congenital heart study database
This study creates a DNA bank and a French database for babies and children with certain types of congenital heart defects, to better understand genetic causes. You’ll be asked to have a blood test and share consent, even though care can continue as usual at the study hospital.
MarseilleAges Any age - NCT02817360RecruitingPhase 4
Preventing heart events in people with type 2 diabetes
This trial tests a heart-focused prevention approach to lower the risk of cardiac (heart) events in adults with type 2 diabetes. It may help by targeting early stress on the heart measured with a specific blood test.
Mödling, Lower AustriaAges 18 years+ - NCT05767476Recruiting
Testing cooling treatment after lack of oxygen at birth
This trial studies outcomes in newborns who had breathing problems from low oxygen before or during birth and were treated with a cooling therapy (therapeutic hypothermia). It may help doctors understand which babies benefit most and what recovery looks like over time.
RomeAges 10 minutes–6 hours - NCT05644314Recruiting
Drug-coated stent for narrowed vertebral arteries
This trial studies whether a drug-coated stent placed in a narrowed vertebral artery can improve outcomes for people with artery narrowing from plaque. It also looks at how safe the stent is, since it requires specific blood-thinning medicines around the procedure.
Guangzhou, GuangdongAges 18 years+ - NCT05319106Recruiting
Cord blood stem cell treatment for leg venous ulcers
This trial tests human umbilical cord tissue stem cells to help heal venous leg ulcers that have lasted at least one month. It’s for adults who meet specific wound size/depth and health criteria and are willing to follow study visits.
Chongqing, Chongqing MunicipalityAges 18–70 - NCT03846297Recruiting
Decision support for defibrillator placement in hypertrophic cardiomyopathy
This trial looks at how to make better decisions about whether someone with hypertrophic cardiomyopathy (HCM) should get an implantable heart defibrillator. It may help by using structured decision support to guide defibrillator implantation.
Boulogne-Billancourt, Hauts-de-SeineAges 16 years+ - NCT05732051RecruitingPhase 2
Nicotinamide riboside to protect the heart during breast cancer chemo
This trial tests whether nicotinamide riboside can help prevent heart problems caused by a common breast-cancer chemotherapy (anthracyclines). If you’re eligible, you’ll be followed to see how your heart is doing during treatment.
Lørenskog, AkershusAges 18 years+ - NCT05363761RecruitingPhase 1
Artery procedure to treat type 2 diabetes and related problems
This Phase 1 study tests a new artery “ablation” procedure for people with type 2 diabetes, aiming to improve diabetes and related conditions like high blood pressure. It will also check whether the procedure is safe and works well enough to study further.
Panama CityAges 21–65 - NCT05778773Recruiting
Study of treatment outcomes for severe aortic valve narrowing
This study looks at how well current treatment choices work for older adults with severe aortic valve narrowing (stenosis). It may help doctors better understand what works best for aging patients in Italy.
San Donato Milanese, MIAges 65 years+ - NCT05369065RecruitingPhase 1
Artery ablation for type 2 diabetes with kidney and liver arteries
This Phase 1 study tests whether a minimally invasive artery procedure can improve type 2 diabetes and related health problems by targeting kidney and liver blood vessels. Because it’s early-stage, the main goal is safety and learning how the treatment works in people who meet specific diabetes, blood pressure, and blood test requirements.
TbilisiAges 21–65 - NCT05347732Recruiting
Finds why heart clot treatment may not work
This study looks at people with a specific type of heart attack who received clot-busting treatment before reaching the hospital. It aims to figure out what predicts why the treatment might fail, which could help improve care in the future.
OsloAges 18 years+ - NCT05521802RecruitingPhase 1/Phase 2
Testing a new CAR-T therapy for relapsed myeloma
This Phase 1/2 study tests C-CAR088, a lab-made immune therapy, in people with multiple myeloma that has come back or did not respond. It is for patients who have already had several standard treatments and whose disease is still measurable.
TianjinAges 18 years+ - NCT00794001Recruiting
Timing feedback to improve treatment for heart attack patients
This trial studies whether feedback about treatment timing can help people who are having a specific type of heart attack get treated faster and more effectively. You may be eligible if you arrived for emergency heart catheter treatment soon after symptoms began.
Hildesheim, Lower SaxonyAges Any age - NCT05718128RecruitingPhase 4
Study of taking heart muscle samples from the inside
This trial studies patients who need an endocardial myocardial biopsy, meaning a small heart muscle sample taken from inside the heart. It’s meant for people with heart problems whose cause is not clearly known and may help doctors learn more about what’s going on.
Hangzhou, ZhejiangAges 18–80 - NCT04944615Recruiting
IVUS-guided stent placement for blocked heart artery using longer guidance
This trial compares two ways to place a stent (a small mesh tube) for a completely blocked heart artery: using an IVUS camera inside the artery versus using a standard x-ray approach. It may help people get better heart outcomes by improving how accurately the stent is placed in long-term blockages.
BeijingAges 18 years+ - NCT05635877RecruitingPhase 4
Low-dose heart-rate medicine after surgery in frail older adults
This trial tests whether a low dose of esmolol (a short-acting heart-rate medicine) can reduce heart muscle injury after non-heart surgery in older, frail people. It may help lower the chance of heart-related complications around the time of surgery.
Jinan, ShandongAges 65–90 - NCT04523909Recruiting
Testing spinal fluid inflammation changes after aortic surgery
This study tracks inflammation-related lab markers in spinal fluid taken through a temporary drain during and after thoracic aortic surgery. It may help doctors understand what inflammatory changes happen around surgery and how they relate to recovery.
NijmegenAges 18 years+ - NCT02208388Recruiting
CT scan test to guide treatment for blocked heart arteries
This trial studies a heart CT scan technique to help doctors better understand coronary artery blockages. It may help guide treatment choices for people with angina (chest pain) who are at intermediate to high risk.
Seoul, Songpa-GuAges 20 years+ - NCT03209414Recruiting
Study of frailty in heart patients receiving heart care
This trial looks at “frailty,” meaning reduced strength and resilience, in older adults with coronary artery disease who are getting heart care. It may help doctors better understand which patients are more at risk and how care decisions could be improved.
Zabrze, Upper SilesiaAges 65 years+ - NCT05156736Recruiting
Study of early heart artery disease in South Asians
This study looks at early buildup of plaque in heart arteries in young adults from Pakistan. It may help doctors understand why this happens earlier and guide better prevention and screening.
Karachi, SindhAges 35–65
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
- 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.