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
- NCT05565807RecruitingPhase 1/Phase 2
Study drug for difficult myeloma after prior treatments
This trial tests an anti-CD38 antibody drug that is “linked” to a cancer-killing payload (an antibody-drug conjugate) in people with multiple myeloma that has returned or did not respond to standard treatments. It is mainly looking at safety first, and also whether it can reduce myeloma in heavily pre-treated patients.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05565209Recruiting
Registry for closing the left atrial appendage
This study is a hospital registry that collects information from people who are having a device placed to close a part of the heart called the left atrial appendage. It helps doctors understand how this procedure works in real life, including different outcomes.
CréteilAges 18 years+ - NCT05565781Recruiting
Watch for hidden atrial fibrillation after unexplained stroke
This study uses a smartwatch and a longer heart-monitoring test (a Holter) to find an irregular heart rhythm called atrial fibrillation after a stroke whose cause is unclear. If they detect it, it may help guide better prevention and treatment to reduce future stroke risk.
Barcelona, CataloniaAges 55 years+ - NCT05565885Recruiting
Blood test study to find markers in adult vasculitis
This study looks for blood test markers that may help diagnose vasculitis and predict how it may go. You may be offered additional blood sampling if you have certain active vasculitis conditions.
ToursAges 16 years+ - NCT05566002Recruiting
AI review of test results for pulmonary hypertension
This trial uses an artificial intelligence tool to look at results from tests used to evaluate pulmonary hypertension. It may help doctors make sense of your past test results, especially heart and lung evaluation results.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05567744Recruiting
Registry for families affected by CADASIL
This trial is a registry that collects information from adults who have CADASIL in their family, or who may be at risk. It helps researchers better understand CADASIL and who it affects, which can support future studies.
Madison, WisconsinAges 18–90 - NCT05568069Recruiting
Study of defibrillator implants for non-ischemic weak heart
This study looks at whether implantable defibrillators can reduce dangerous heart rhythms in people with non-ischemic cardiomyopathy (heart weakness not caused by blocked heart arteries), a heart scar, and very low pumping strength despite best treatment. It compares different approaches to choosing which patients should receive these devices.
High Wycombe, BuckinghamshireAges 18 years+ - NCT05569382RecruitingPhase 4
Testing bisoprolol and verapamil in hypertrophic heart disease
This study tests whether two common heart medicines, bisoprolol and verapamil, improve symptoms in adults with non-obstructive hypertrophic cardiomyopathy. It may help you and your care team understand which medicine works better for symptom control and heart function.
Aarhus NAges 18 years+ - NCT05571150Recruiting
Stroke rehab training for patients and their caregivers together
This study tests a new “together” training approach for people recovering from their first stroke and their primary caregivers. The goal is to improve recovery and day-to-day support by teaching the patient-caregiver pair how to work together.
TaipeiAges 20 years+ - NCT05572229RecruitingPhase 2
Teclistamab treatment for older adults with multiple myeloma
This Phase 2 trial studies how well teclistamab works when used in combination for people age 65 and older with multiple myeloma. It aims to see whether this treatment can control the cancer safely in older patients who may not do high-dose chemotherapy or stem cell transplant.
AmiensAges 65 years+ - NCT05572710Recruiting
Aortic valve patients share real-world safety and outcomes
This observational registry collects information about people who need an aortic valve replacement using a biologic (bioprosthesis) valve. It aims to better understand safety and effectiveness in everyday care, not to test a new drug or procedure.
Leuven, Vlaams-BrabantAges 18 years+ - NCT05573802RecruitingPhase 1/Phase 2
Belantamab and other medicines for new multiple myeloma
This early-phase study tests how safe and effective belantamab mafodotin is when combined with lenalidomide and dexamethasone, plus a medicine called nirogacestat, in people with newly diagnosed multiple myeloma who cannot have stem cell transplant. It may help shrink the cancer and improve outcomes, while doctors track side effects.
AthensAges 18 years+ - NCT05573633Recruiting
Smartwatch test to detect irregular heartbeats after heart surgery
This study checks whether a smartwatch can spot an irregular heartbeat called atrial fibrillation soon after on-pump heart surgery. If the smartwatch works well, it could help clinicians find the problem earlier after surgery.
AmiensAges 18 years+ - NCT05573997Recruiting
Testing new ultrasound measures of heart muscle function in heart failure
This study looks at whether a special kind of heart ultrasound can better measure how well the heart muscle works in people admitted with heart failure. It may help doctors understand heart function using clearer ultrasound “biomarkers” soon after hospital admission.
Thessaloniki, Central MacedoniaAges 18 years+ - NCT05574296RecruitingPhase 1
Test hydrogen gas for children needing emergency heart resuscitation
This early safety study tests whether “hydrogen” can be given to children during emergency heart resuscitation that isn’t improving with standard efforts. It’s meant to see if the treatment is safe and feasible for a very specific, life-threatening situation.
Washington D.C., District of ColumbiaAges Any age - NCT05577988RecruitingPhase 3
Genetic-guided weaker blood thinner vs stronger standard therapy
This study tests whether switching early to a weaker anti-platelet medicine based on your genetics can reduce bleeding problems in people at high risk for bleeding after a heart attack. It compares this approach to the usual strategy of staying on a stronger anti-platelet medicine.
Paris, IDFAges 18 years+ - NCT05578300Recruiting
Translating thrombectomy care into real-world practice in Asia-Pacific
This study aims to help endovascular thrombectomy for certain severe strokes work well in everyday hospital care across Asia-Pacific. You may be considered if you’re an adult with a specific type of stroke blocked in a major brain blood vessel.
Linyi, ShandongAges 18 years+ - NCT05581368Recruiting
Study how cannabis affects blood vessels
This trial tests whether regular cannabis use changes how your blood vessels work, compared with people who do not use cannabis. It may help researchers understand potential effects on heart and circulation health.
London, OntarioAges 19–80 - NCT05582044Recruiting
Exercise using leg suction for heart failure with preserved function
This study tests whether a specific lower-body exercise method using negative pressure (leg suction) can improve symptoms and heart-related function in people with heart failure with preserved ejection fraction (HFpEF). You may also be offered screening if you are a healthy person, to compare results.
Kelowna, British ColumbiaAges 40 years+ - NCT05583617RecruitingPhase 1/Phase 2
Testing multiple treatments for multiple myeloma after prior therapy
This early-phase study tests how safe and effective several treatment approaches are for people with multiple myeloma who have already had other treatments. Depending on your myeloma features and prior care, a study drug combination may be offered to try to control the disease.
Randwick, New South WalesAges 18 years+ - NCT05583773RecruitingPhase 4
Herbal medicine for heart failure with lower pumping strength
This trial tests SHengXIaN-QuYu decoction (an herbal treatment) in people with symptomatic heart failure and reduced pumping function. It looks to see whether the herbal formula is safe and helpful for heart failure symptoms and heart function.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05584124RecruitingPhase 2
Brain stimulation treatment for lasting fatigue after stroke
This trial tests a non-painful brain stimulation method (repetitive magnetic pulses) to see if it can reduce fatigue that continues long after a stroke. It may help people whose stroke fatigue has lasted more than six months and who can safely undergo repeated sessions.
Decatur, GeorgiaAges 34–80 - NCT05584488Recruiting
Study of immune and allergy patterns over time
This study follows people with suspected or known inherited immune/allergy problems by collecting health information and blood. It may help researchers understand how immune systems and allergies behave over time and support future studies.
New York, New YorkAges Up to 99 years - NCT05584722Recruiting
Study risk and resilience in pulmonary arterial hypertension
This study looks at how people with pulmonary arterial hypertension (PAH) and certain genetic risks cope and how their bodies respond over time. It may help researchers understand factors linked to better or worse outcomes, and how different people manage the condition.
Nashville, TennesseeAges 15–80
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.
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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.