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
- NCT06091774Recruiting
Digital therapy for heart disease risk factors
This study tests a smartphone app (iATROS) for managing heart disease risk factors in patients with coronary heart disease. If you have had a heart attack, a stent, angioplasty, or bypass surgery, and you can use a smartphone, this program may help you reduce your risk through digital monitoring and guidance.
Munich, BavariaAges 18 years+ - NCT06202846Recruiting
Looking for Y chromosome in Turner syndrome blood
This study looks for a tiny piece of the Y chromosome (a sex chromosome normally found in males) in a blood sample. It may help doctors better understand Turner syndrome and find hidden Y chromosome material that could affect health.
LyonAges 2–74 - NCT06284057Recruiting
Culotte stent technique study for Y-shaped heart blockages
This trial studies two different ways of placing stents in Y-shaped blockages in the heart's arteries. It aims to find which technique works best for people who need two stents in that area.
Legnica, Lower Silesian VoivodeshipAges 18 years+ - NCT05859048Recruiting
Care plan to help high-risk people spot heart failure early
This trial tests a multidisciplinary care approach aimed at helping people with high risk for heart failure get diagnosed earlier. It may help you catch heart failure sooner if it starts, so treatment can begin earlier.
Vancouver, British ColumbiaAges 40 years+ - NCT06298448Recruiting
Ear, nose, and throat inflammation study in eGPA
This study looks at inflammation in the ear, nose, and throat area in people with different conditions, including nasal polyps, severe asthma, eGPA (a rare blood vessel disease), and GPA (another rare disease). It compares them to healthy volunteers to better understand what causes local inflammation.
GroningenAges 18 years+ - NCT06095765RecruitingPhase 3
Colchicine for heart disease after stent placement
This trial tests if colchicine, a common anti-inflammatory medicine, can help prevent future heart problems in people who have coronary artery disease and recently had a stent placed. It's for adults with at least one extra risk factor like diabetes, smoking, or high blood pressure.
AalstAges 45 years+ - NCT04367220Recruiting
Canadian heart imaging registry for people getting scans
This trial is a registry that collects information from people referred for hospital heart imaging. It helps researchers better understand cardiovascular imaging and care, without changing your treatment.
Calgary, AlbertaAges 18 years+ - NCT06303414Recruiting
Opening blocked carotid artery for ongoing symptoms
This trial tests a procedure to open a blocked carotid artery in the neck to improve blood flow to the brain. It's for people who still have symptoms (like weakness or vision problems) despite medical treatment.
Beijing, Beijing MunicipalityAges 18–80 - NCT03035747Recruiting
Registry for treatment of varicose veins
This study collects information about people who have varicose veins with abnormal backflow in the leg veins. It’s meant to track how treatments for chronic venous problems are working over time, which can help improve care for others in the future.
Saint PetersburgAges 18 years+ - NCT06302777Recruiting
Main image registry for heart artery imaging
This study is tracking patients who receive a special type of imaging (like an ultrasound) on their heart arteries before a procedure. It aims to learn more about how this imaging helps guide care.
Frankfurt am Main, HesseAges 18 years+ - NCT05841615Recruiting
Atrial fibrillation and high blood pressure ablation plus kidney nerve treatment
This trial tests whether treating atrial fibrillation with a catheter procedure plus treating high blood pressure through kidney nerve treatment works better together. It may help control rhythm and blood pressure, but you must meet several heart, kidney-artery, and safety requirements.
Xiamen, FujianAges 18–75 - NCT06279663Recruiting
Comparing bypass surgery vs stenting for high-risk heart attacks
This study compares two common treatments (bypass surgery vs. stenting) for people having a high-risk heart attack that involves blockages in multiple arteries. It aims to find which approach leads to better long-term outcomes.
Novosibirsk, Novosibirsk OblAges 18 years+ - NCT05612945Recruiting
High-intensity versus easier walking exercise for PAD symptoms
This study tests whether harder interval exercise works better than easier, moderate exercise to improve walking symptoms in people with peripheral artery disease (PAD). It may help you compare which exercise level improves your ability to walk comfortably.
Lausanne, Canton of VaudAges 18 years+ - NCT05262803RecruitingPhase 4
Lower blood-thinner dose after heart attack for high bleeding risk
This Phase 4 study tests whether using a reduced blood-thinner (antithrombotic) strategy after a heart attack can lower bleeding without losing heart protection. It is mainly for people considered high risk for bleeding after getting a stent.
AalborgAges 18 years+ - NCT06162780Recruiting
Clip repair for severe mitral valve leak
This trial tests a clip-based procedure (TEER) to fix a severe leak in the mitral valve for people who have symptoms or heart changes but are at low to medium risk for surgery. The goal is to see if this less invasive option works well and is safe.
Guangzhou, GuangdongAges 18 years+ - NCT05931783Recruiting
Compare two ways to use an artery during heart bypass
This study compares two surgical techniques for heart bypass: using the left internal thoracic artery in one specific way versus another. It may help improve how well the bypass works in people who need bypass surgery for multiple blocked heart arteries.
GrazAges 18–80 - NCT06232096RecruitingPhase 1/Phase 2
Study of MBS314 for relapsed or refractory multiple myeloma
This trial tests a new drug called MBS314 for people whose multiple myeloma has returned or stopped responding to other treatments. The goal is to see if MBS314 can help shrink or control the myeloma.
BeijingAges 18 years+ - NCT06101888Recruiting
New Heart Valve for Severe Aortic Leak
This study is testing a new, less invasive heart valve system (TaurusTrio) for people with severe aortic regurgitation (a leaky aortic valve) who cannot have open-heart surgery. It aims to see if the valve is safe and works well to improve symptoms.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06302634Recruiting
Heart rehab program for cancer patients at risk
This trial tests a rehabilitation program designed to help people at high risk of heart problems from cancer treatment. You would do exercises and have check-ups, either at the hospital or at home.
Santiago de Compostela, A CoruñaAges 18–70 - NCT05389956Recruiting
Study links health screening results to heart and cancer risk
This study follows people who had a routine health check to learn what increases the risk of heart disease and cancer. Your answers and test results may help doctors better understand risk factors in the Korean population.
UlsanAges 19 years+ - NCT05774262Recruiting
Pacemaker or nerve-targeting treatment for certain heart rhythm blocks
This study compares two treatments for specific “AV block” heart rhythm problems: a pacemaker versus a procedure called cardioneuroablation. The goal is to see which approach works better for preventing symptoms like fainting or slow heart rates.
Dąbrowa GórniczaAges 18–75 - NCT06145906Recruiting
Optimizing catheter ablation for atrial fibrillation
This trial is studying a way to improve the entire process of catheter ablation for atrial fibrillation. It may help people who are having this procedure for the first time and have a normal-sized left atrium and good heart function.
Zhengzhou, HenanAges 18–80 - NCT03908463Recruiting
Heart procedure registry for people who get coronary angioplasty
This trial is a registry that collects health information from adults who undergo a heart procedure called coronary angioplasty. It may help researchers understand outcomes and improve care for future patients undergoing similar treatments.
SeoulAges 19 years+ - NCT06244914Recruiting
Combined brain stimulation for recovery after recent stroke
This trial tests if combining two kinds of gentle brain stimulation can help people recover better after a recent stroke. It's for people who had a clot-caused stroke in the upper part of the brain and still have some weakness on one side.
Tainan, TainanAges 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
- 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.