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
- NCT05235685Recruiting
Testing muscle fatigue during exercise in COPD and heart failure
This study looks at how tired your muscles get during a controlled cycling exercise test in people who have COPD, and—if applicable—heart failure at the same time. It may help researchers understand exercise limits and how to better support you with these conditions.
Échirolles, Auvergne-Rhône-AlpesAges 18 years+ - NCT05236348Recruiting
Testing an optical blood pressure monitor against standard checks
This trial checks whether an optical device can measure your blood pressure as accurately as the usual method used by clinicians. You may be asked to come for 9 visits and do brief exercises while measurements are taken.
LausanneAges 21–85 - NCT05236153Recruiting
Study of heart valve procedure in repaired Tetralogy of Fallot
This study looks at how a transcatheter pulmonary valve replacement works in people with repaired Tetralogy of Fallot or double outlet right ventricle. The goal is to better understand the heart’s anatomy and how it may affect the valve procedure.
Boston, MassachusettsAges Any age - NCT05236374Recruiting
Daily beef in a heart-healthy diet to study zinc cells
This study tests whether eating daily beef as part of a heart-healthy diet changes how your body’s cells handle zinc, a mineral important for many functions. It’s designed for older adults and includes strict diet and medication rules to keep results accurate.
Davis, CaliforniaAges 55–70 - NCT05237817Recruiting
Links stroke history to accidental adrenal gland findings
This study looks at whether certain accidental adrenal gland growths found on scans are linked to having had a stroke. It may help doctors understand stroke risk factors and how adrenal findings should be interpreted.
BeijingAges 18–100 - NCT05238272Recruiting
tRNS device to improve mirror therapy after stroke
This trial tests a brain-stimulation device (tRNS) paired with precision mirror therapy to improve arm movement after a stroke. It may help people with moderate to mild arm weakness regain more control, but you must meet several safety and health criteria.
TaoyuanAges 35–85 - NCT05239364Recruiting
Ablation for an abnormal heart rhythm after prior AF surgery
This trial tests a procedure to “ablate” (treat) a specific fast heart rhythm in the upper chambers of the heart that happens after previous atrial fibrillation (AF) ablation or heart surgery. It may help by stopping the rhythm and reducing symptoms, while doctors check how well the targeted mapping and ablation work.
Hamburg, Free and Hanseatic City of HamburgAges 18 years+ - NCT05241418Recruiting
MRI study of heart scar using gadolinium in repaired heart defects
This trial looks at heart MRI images to see whether a contrast dye (gadolinium) can highlight scar-like areas after congenital heart problems have been repaired. It may help doctors better understand healing and plan care, especially for future heart procedures.
Boston, MassachusettsAges 13 years+ - NCT05241262RecruitingPhase 1
N-acetylcysteine for people with m.3243A>G and low brain glutathione
This trial tests whether the supplement N-acetylcysteine (NAC) can help people who have the m.3243A>G mitochondrial genetic change and low levels of a brain chemical called glutathione. The study aims to see if raising glutathione in the brain is safe and potentially beneficial for these patients.
New York, New YorkAges 18–80 - NCT05242315RecruitingPhase 4
Long-acting tacrolimus after liver transplant
This trial studies whether taking an extended-release form of tacrolimus (a medicine to prevent transplant rejection) after a liver transplant works well for people who are followed at the University of Alberta. It may help simplify dosing and monitor safety and effectiveness after transplant.
Edmonton, AlbertaAges 18 years+ - NCT05242055Recruiting
Tracking and treating chronic kidney disease risk
This trial looks at how well an integrated program for identifying and treating people at risk for chronic kidney disease (CKD) can improve outcomes. It may help by catching problems earlier and guiding treatment sooner.
Beijing, Beijing MunicipalityAges 18–100 - NCT05242393Recruiting
How daily body rhythms relate to recovery after stroke
This observational study looks at how your body’s daily rhythms may affect brain recovery after an ischemic stroke. It may help researchers understand what timing-related factors influence “neuroplasticity,” meaning the brain’s ability to adjust and heal.
Saint PetersburgAges 18–80 - NCT05243797RecruitingPhase 3
Teclistamab plus lenalidomide maintenance after transplant
This trial tests whether adding teclistamab to lenalidomide (or using teclistamab alone) helps keep newly diagnosed multiple myeloma from coming back after an autologous stem cell transplant. It’s comparing these options to lenalidomide alone as long-term maintenance.
Phoenix, ArizonaAges 18 years+ - NCT05243212RecruitingPhase 1/Phase 2
CAR-T cell therapy for multiple myeloma
This Phase 1/2 study tests a personalized CAR-T cell treatment that targets a protein called BCMA on myeloma cells. It’s designed for people with multiple myeloma who have already tried several other treatments and still have measurable disease.
Ramat GanAges 18 years+ - NCT05244629Recruiting
Compare two stents for chronic artery-related gut pain
This trial tests whether an uncovered stent or a covered stent works better for treating chronic mesenteric ischemia (reduced blood flow to the intestines from artery narrowing). It’s meant for adults with symptoms and scans showing significant narrowing in a specific gut artery.
København ØAges 18 years+ - NCT05245877RecruitingPhase 4
Preventing blood clots before and after pancreatic surgery
This study compares two approaches to preventing blood clots around the time of pancreatic surgery. It may help lower the risk of dangerous clotting events after surgery, especially for people who are high risk.
TorontoAges 18–120 - NCT05247125RecruitingPhase 4
Testing light or melatonin to help brain recovery after stroke
This study looks at whether changing your sleep timing using light therapy or melatonin can improve “brain rewiring” after an ischemic stroke. It mainly focuses on people who arrive very soon after stroke symptoms and who also meet specific safety and sleep/medication requirements.
Saint PetersburgAges 18–80 - NCT05248165Recruiting
Heart artery disease patients having stent placement
This study enrolls adults with blocked heart arteries who need a procedure called PCI (stent placement). It collects real-world information to help understand and improve care for people like you.
NaplesAges 18 years+ - NCT05248412Recruiting
Study how COVID-19 long-term effects impact chronic diseases
This research looks at how the COVID-19 pandemic has affected the health and healthcare of adults with long-term conditions like diabetes, high blood pressure, heart disease, cancer, kidney disease, or chronic lung disease. It compares people who may have been affected by the pandemic and looks at their health and access to care over time.
Hong Kong, Hong KongAges 18 years+ - NCT05250349Recruiting
Ultrasound brain blood flow and thinking in stable heart failure
This trial studies whether a noninvasive ultrasound test of blood flow in the brain, along with memory and thinking questionnaires, can help explain thinking changes in people with stable heart failure. It may help researchers better understand why some people develop cognitive (thinking) difficulties as heart failure progresses.
Krakow, MPAges 18 years+ - NCT05250557Recruiting
Study heart blood-flow measurements to predict outcomes in coronary disease
This study looks at a specific heart blood-flow measurement taken during a coronary procedure to see how well it predicts future outcomes. If you had a successful pressure measurement called FFR with a tracing, your results may be analyzed to understand risk and prognosis.
SeoulAges 20 years+ - NCT05251415Recruiting
Study of rare autoimmune diseases with blood and medical samples
This trial collects clinical and lab information (like blood and medical history) from people with rare autoimmune diseases, especially when symptoms are unusual. It aims to better understand what causes these illnesses and how newer treatments may help.
ToulouseAges 6–99 - NCT05252208Recruiting
Stretching or walking to lower blood pressure
This study compares stretching versus walking to see which helps lower blood pressure. It may help you learn a safe, low-cost routine to improve blood pressure if you have mildly high readings.
Saskatoon, SaskatchewanAges 18 years+ - NCT05255705Recruiting
Registry study of revascularisation after heart scan
This study collects information about people who had a heart scan (angiogram) and then a procedure to improve blood flow to the heart. It helps researchers understand outcomes after this treatment using a research database.
LondonAges 16 years+
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.