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
- NCT06098300Recruiting
How blood pressure changes affect eye blood vessels
This trial is studying how changes in blood pressure affect the tiny blood vessels in the back of the eye (retina). It may help people with high blood pressure understand how treatment impacts their eye health.
ViennaAges 18–90 - NCT06098833RecruitingPhase 2
Sildenafil for newborn brain injury after birth asphyxia
This trial tests whether a liquid form of the medicine sildenafil can help repair brain damage in newborns who had a difficult birth and were treated with cooling. If your baby meets the cooling criteria and has brain injury on an MRI, this study may offer an additional treatment option.
Montreal, QuebecAges birth–2 days - NCT06099158Recruiting
Heart failure trial guided by HeartLogic technology
This trial tests if using HeartLogic, a feature in your heart device that tracks early warning signs, can help your care team manage your heart failure better and keep you out of the hospital. If you already have a compatible CRT-D or ICD and use remote monitoring, you may be able to join.
Hellerup, Capital RegionAges 18 years+ - NCT06099015Recruiting
Cera vascular plug study for blocking blood vessels
This study tests a device called the Cera Vascular Plug System to block blood flow in certain arteries or veins. It may help patients who need this type of treatment for conditions like abnormal blood vessels or bleeding.
Bad HersfeldAges 18–85 - NCT06099106Recruiting
Testing a new device to close the left atrial appendage in AFib
This trial tests a new device called ENDOMATIC SEPIOLA that closes a small pouch in your heart (the left atrial appendage) to lower your stroke risk. It is a non-surgical option for people with atrial fibrillation who cannot take blood thinners.
TbilisiAges 18 years+ - NCT06099730Recruiting
Pulsed field ablation for atrial fibrillation
This trial tests a new method called pulsed field ablation to treat atrial fibrillation (AF), a type of irregular heartbeat. It aims to safely stop AF episodes by targeting specific areas in the heart, and may help people with paroxysmal (coming and going) or persistent AF who haven't had this procedure before.
Jonesboro, ArkansasAges 18–80 - NCT06100237RecruitingPhase 2
Teclistamab and daratumumab for high-risk smoldering myeloma
This trial tests two immunotherapy drugs (teclistamab and daratumumab) for people with high-risk smoldering myeloma to see if the combination can stop or delay progression to active multiple myeloma. It's a new approach for those whose smoldering myeloma has a higher chance of becoming active.
Miami, FloridaAges 18 years+ - NCT06099912Recruiting
Personalized frailty-based treatment for older adults with new multiple myeloma
This trial tests a personalized treatment approach for people aged 65 and older with newly diagnosed multiple myeloma. The goal is to tailor therapy based on each patient's level of frailty, which could help improve outcomes and reduce side effects.
Changchun, JilinAges 65 years+ - NCT06100718Recruiting
Detecting new cancer after a stroke in at-risk patients
This study looks for hidden cancers in people who have had a stroke and have high levels of a blood marker called D-dimer. It aims to see if a full cancer screening one year later can find new cancers that might have been missed.
Lausanne, Canton of VaudAges 18 years+ - NCT06100328Recruiting
Cardiac tumor study tracking health outcomes
This study looks at people with different types of heart tumors to better understand their risks and outcomes. It aims to improve how doctors predict and manage future health events.
Xi'an, ShaanxiAges 3–80 - NCT06100770Recruiting
Aveir leadless pacemaker study for Medicare patients
This study looks at how well a new type of pacemaker, called Aveir AR, works for people with Medicare. It helps doctors understand if this leadless pacemaker is safe and effective for treating slow heart rhythms.
Sylmar, CaliforniaAges 18 years+ - NCT06101693Recruiting
Biomarker study for suspected heart failure
This study looks at certain proteins in your blood to help doctors better understand and diagnose a type of heart failure called HFpEF. You might be able to join if your doctor recently ordered a blood test for NT-proBNP because they thought you might have heart failure.
GlasgowAges 18 years+ - NCT06101862Recruiting
CT scan vs. angiogram for certain heart attacks
This trial compares two ways to look at heart arteries: a CT scan (noninvasive) versus a traditional angiogram (a tube put into an artery). The goal is to see which is better for people having a certain type of heart attack.
Copenhagen, HellerupAges Any age - 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+ - NCT06102382Recruiting
Comparing two doses of noradrenaline for preventing low blood pressure during C-section
This trial tests two different doses of the drug noradrenaline to see which works better at preventing dangerously low blood pressure after spinal anesthesia for a planned C-section. This is for women who are at least 37 weeks pregnant and within a certain weight and height range.
AsyutAges 19–40 - NCT06103201RecruitingPhase 1
Special MRI for Traumatic Brain Injury Recovery
This trial uses a special MRI scan to look at how your brain uses energy after a traumatic brain injury. The goal is to better understand brain healing and find new ways to help people recover.
Baltimore, MarylandAges 18–80 - NCT06104033Recruiting
Drug-coated balloon for patients with heart artery disease in multiple vessels
This trial tests whether a drug-coated balloon is a good treatment option for people who have blockages in two or more heart arteries. It aims to see if this approach can safely open blocked arteries without a permanent stent.
SeoulAges 19–100 - NCT06104007Recruiting
Genoss balloon for narrowed heart stents
This study follows patients who have already received a special drug-coated balloon (Genoss® DCB) to treat a re-narrowed heart stent. It aims to see how safe and effective the balloon is in the long term.
SeoulAges 19 years+ - NCT06104969Recruiting
Biomarkers for active diabetic foot ulcers
This study is looking for people with diabetes who have an open foot or ankle ulcer. Researchers want to collect samples to find biomarkers, which are natural signs in the body that could help improve treatment and healing. It may be a good fit if you have a diabetic foot ulcer and are not currently in another drug trial for ulcers.
Tucson, ArizonaAges 18 years+ - NCT06105554RecruitingPhase 1/Phase 2
Study of belumosudil for relapsed or refractory multiple myeloma
This trial tests a new drug called belumosudil, alone or with dexamethasone, for people with multiple myeloma that has come back or stopped responding to at least three prior treatments. The goal is to see if it can help when other therapies have stopped working.
Houston, TexasAges 18 years+ - NCT06105580Recruiting
Pacing methods for heart failure with wide QRS
This trial compares two ways to pace the heart in people with heart failure and a wide QRS (a sign the heart's electrical signals are slowed). The goal is to see which method better reduces the risks of death, heart failure hospitalization, or needing a heart transplant.
BarcelonaAges 18 years+ - NCT06105775Recruiting
Nitrate supplement for high blood pressure in pregnancy
This trial tests if a nitrate supplement (similar to beetroot) can help control chronic high blood pressure in early pregnancy. It is for women already taking methyldopa and enrolled before 16 weeks.
Ribeirão Preto, São PauloAges 18 years+ - NCT06106269Recruiting
Outcomes of rectal artery embolization for bleeding hemorrhoids
This study looks at how well rectal artery embolization (a procedure that uses tiny particles to block blood flow to hemorrhoids) works for treating bleeding internal hemorrhoids. It aims to understand if this treatment improves quality of life and reduces symptoms.
Rochester, MinnesotaAges 18–90 - NCT06107010Recruiting
Robotic exoskeleton for walking after stroke
This trial tests a robotic exoskeleton (Atalante) to help people who have had a stroke and have trouble walking. It looks at whether using the device early (1–4 months after stroke) can improve the ability to walk again.
CréteilAges 18 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.