Cardiology
Heart & circulation clinical trials
Heart disease, blood pressure, and disorders of the blood vessels and circulation. We’re tracking 9,613 recruiting studies in this area right now.
By phase
- Not applicable7,634
- Phase 2471
- Phase 4471
- Phase 3438
- Phase 1350
- Phase 1/Phase 2161
- Phase 2/Phase 388
Top conditions
- Stroke796
- Heart Failure535
- Hypertension389
- Cardiovascular Diseases374
- Coronary Artery Disease362
- Multiple Myeloma328
- Atrial Fibrillation259
- Ischemic Stroke190
- Atrial Fibrillation (AF)154
- Acute Ischemic Stroke139
- Pulmonary Hypertension104
- Myocardial Infarction96
- Congenital Heart Disease83
- Peripheral Arterial Disease80
- Stroke, Ischemic77
- Aortic Valve Stenosis76
- Obesity74
- Acute Coronary Syndrome73
Leading sponsors
- Mayo Clinic93
- Assistance Publique - Hôpitaux de Paris88
- National Taiwan University Hospital67
- 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
- California449
- Alabama195
- Arizona182
- Massachusetts174
- New York166
- Florida141
- Texas122
- Maryland118
- Minnesota118
- Illinois111
Recruiting studies9,613 total
- NCT07438379Enrolling by invitation
Reproductive Health Study for Pregnant Women in Somaliland
This study explores reproductive health in women living in Somaliland who are in early to mid-pregnancy. The goal is to learn more about health needs and experiences during pregnancy.
Hargeisa, MaroodijeehAges Any age - NCT06806397Recruiting
Brain imaging study of arm weakness after stroke
This study uses a light-based brain scanner (fNIRS) to understand how stroke affects arm movement. It may help find new ways to improve rehab.
MoscowAges 35–70 - NCT06806540Recruiting
Peripheral artery disease in patients with deep vein thrombosis in the leg
This study looks at how many people with blood clots in their leg veins also have narrowing in their leg arteries. It uses an ultrasound test to check both conditions.
Bologna, BolognaAges 18 years+ - NCT05021198Recruiting
Study for people diagnosed with cerebral venous thrombosis
This study is for people who have been diagnosed with cerebral venous thrombosis (a blood clot in the brain’s venous system) at specific hospitals. It looks back at cases from 2014 to 2023 to learn from real-world patients.
LørenskogAges Any age - NCT05378490Recruiting
Study of stroke types and thrombolysis treatment
This study includes people who have had certain kinds of sudden brain blood-flow problems (like an ischemic stroke, bleeding in the brain, or a brief warning episode) or conditions that look similar. It looks at how treatment such as clot-busting medicine (thrombolysis) fits for these situations.
LørenskogAges 18 years+ - NCT05400317RecruitingPhase 3
Check AD-218 for fibromyalgia symptoms and safety
This phase 3 study tests whether AD-218 works and is safe for people with fibromyalgia. It may help by improving symptoms, but it also carefully monitors side effects.
Daegu, Nam-guAges 19 years+ - NCT05700877RecruitingPhase 4
Screening and treatment for silent heart artery disease in type 2 diabetes
This trial tests a screening and intervention approach for “silent” coronary artery disease (heart artery narrowing without major symptoms) in people with type 2 diabetes. It may help prevent future heart problems by finding higher-risk cases early and starting the right treatment plan.
OdenseAges 55–75 - NCT05850247RecruitingPhase 2
Study brain inflammation in carotid artery narrowing after stroke or TIA
This Phase 2 study looks at a protein called ficolin-2 and whether it relates to brain inflammation after a short stroke-like event or eye blood vessel blockage caused by narrowed carotid arteries. If you recently had symptoms from the carotid artery and meet imaging and health criteria, you may be offered study-related assessments to better understand the cause and help future treatment decisions.
BronAges 18 years+ - NCT03344276Recruiting
Testing thinking and memory after carotid artery treatment
This study checks how a carotid artery procedure affects thinking and memory. You may be able to join if you’re an adult with significant carotid artery narrowing seen on ultrasound, and you can safely do follow-up MRI scans.
San Diego, CaliforniaAges 18 years+ - NCT05416385Recruiting
Stress echo scan with special contrast to study carotid plaque
This study uses a heart stress ultrasound test, plus a contrast dye, to look for new blood vessel growth inside carotid plaque (the buildup in neck arteries). It may help doctors better judge the risk of stroke and determine which people need closer care.
Calgary, AlbertaAges 18 years+ - NCT06120049RecruitingPhase 2/Phase 3
Comparing new PET scans for Parkinson's, MSA, Lewy body dementia, and Alzheimer's
This study tests if a new radioactive tracer called [18F]-MFBG can help doctors better distinguish between Parkinson's disease, multiple system atrophy (MSA), dementia with Lewy bodies, and Alzheimer's disease. It compares the new scan with two standard scans to see which is most accurate.
Ghent, GentAges 18–85 - NCT05773638Recruiting
Study blood clots and heart disease in adults with Von Willebrand
This study looks at cardiovascular problems and blood-clot events (like deep vein clots or pulmonary embolism) in adults with Von Willebrand disease in western France. It may help doctors better understand who is at risk and how to manage these complications.
AngersAges 18 years+ - NCT06228924RecruitingPhase 1
Gene therapy for ARVC with PKP2 mutation
This trial tests a new gene therapy called TN-401 for people with ARVC caused by a specific PKP2 gene mutation. The goal is to see if the treatment is safe and can help reduce dangerous heart rhythms.
San Francisco, CaliforniaAges 18–65 - NCT07429214Recruiting
Study of a new catheter for atrial fibrillation ablation
This trial tests a new catheter system to treat atrial fibrillation (AF) by creating small scars in the heart to block faulty signals. It may help people with symptoms that continue despite medication and who are scheduled for a standard ablation procedure.
AalstAges 18–75 - NCT07428499RecruitingPhase 3
Long-term safety of ADX-324 for hereditary angioedema
This study is for people who already finished a previous trial of the drug ADX-324 for hereditary angioedema. It tests the long-term safety and effectiveness of continuing the medication.
Litchfield Park, ArizonaAges 18 years+ - NCT07426419RecruitingPhase 1/Phase 2
Gene therapy for heart failure caused by BAG3 mutation
This trial tests an experimental gene therapy (AFTX-201) designed to address the genetic cause of heart failure in people with a specific BAG3 gene mutation. It aims to improve heart function and reduce symptoms.
Miami, FloridaAges 18–70 - NCT07433504Recruiting
Tricuspid valve clipping for leaky valve
This trial tests a new device that clips the tricuspid valve to stop blood from flowing backward. It is for people with severe tricuspid regurgitation (a leaky valve) who still have symptoms despite medical treatment.
ShanghaiAges 18 years+ - NCT07431437Enrolling by invitation
GENOSS paclitaxel balloon for leg artery disease
This trial tests a special balloon coated with paclitaxel (a drug that helps keep arteries open) in people with narrowed or blocked leg arteries. It aims to see how well the balloon works over one year.
Seoul, SeoulAges 19–85 - NCT07430917RecruitingPhase 2
Testing J147 for recent stroke from blocked artery
This trial tests a new drug, J147, for people who recently had a stroke caused by a blocked artery and have already had a procedure to reopen that artery. It aims to see if the drug can improve recovery.
Long Beach, CaliforniaAges 18–90 - NCT07428564Recruiting
VARIPULSE catheter and TRUPULSE generator for persistent atrial fibrillation
This study tests a new catheter and generator system to treat persistent atrial fibrillation (an irregular heartbeat that lasts more than a week). It may help people whose symptoms haven't been controlled by medication and who need a procedure called ablation to fix the heart's electrical signals.
AalstAges 18–75 - NCT07430397RecruitingPhase 1
Safety study of CITY-FXI in people with clotting risk factors
This trial tests a new medicine called CITY-FXI to see if it is safe and well tolerated in people who are at higher risk of blood clots, including those with certain genetic mutations or a past blood clot. It helps doctors find the right dose for future studies.
LondonAges 18–65 - NCT07433075Recruiting
Testing a planning software for brain aneurysm treatment
This study tests Sim&Size, a software that helps doctors plan how to place implants to treat unruptured brain aneurysms. The trial looks at whether using this software improves outcomes and reduces costs.
AngersAges 18 years+ - NCT07430956RecruitingPhase 3
Stroke prevention in atrial fibrillation without standard blood thinners
This trial tests a new medication to prevent strokes and blood clots in people with atrial fibrillation (an irregular heartbeat) who cannot safely take standard blood thinners. The drug works by blocking a different clotting factor, which may lower bleeding risks.
Dothan, AlabamaAges 18 years+ - NCT06811831RecruitingEarly Phase 1
Mactientan for chest pain from small heart artery problems
This trial tests if mactientan, a blood vessel relaxer, can improve chest pain in people with coronary microvascular angina—where small heart arteries don't work right even though larger ones are clear. It aims to help those with ongoing angina symptoms.
Beijing, Beijing MunicipalityAges 18–75
Common questions
- How many heart & circulation clinical trials are recruiting?
- Clin2 is tracking 9,613 recruiting cardiology studies from the U.S. registry right now, out of 14,690 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.