Clinical trials
General Population (no Specific Condition or Disease) clinical trials
Below are recruiting general population (no specific condition or disease) clinical trials, each written for real people, not researchers. We’re tracking 10,548 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06604650Recruiting
Park-based health program for older adults in Miami
This study looks at how community park programs can help older adults stay healthy. It will use information already collected from people who are already part of the Miami-Dade Active Older Adults study.
Miami, FloridaAges 50–95 - NCT07585890Recruiting
Liver Transplant Outcomes With Machine Preservation in Europe
This study collects information about how livers do after transplantation when they've been preserved using machine perfusion—a technique that keeps donor livers in better condition before surgery. Researchers want to understand which preservation methods work best to improve transplant success across Europe.
InnsbruckAges 18 years+ - NCT00575133Recruiting
Study of people with fatty liver disease
This study follows people who have been confirmed to have fatty liver disease seen on a liver sample. It aims to understand the condition over time and how different causes and health factors may affect it.
Zurich, Canton of ZurichAges 18 years+ - NCT00004317RecruitingPhase 4
Treating Congenital Toxoplasmosis With Three Medications
This study tests a combination of three medications (pyrimethamine, sulfadiazine, and leucovorin) to treat toxoplasmosis—a parasitic infection passed from mother to baby during pregnancy. The goal is to see if early treatment prevents serious complications in infected infants.
Chicago, IllinoisAges Any age - NCT03023371Recruiting
National registry for IgG4-related disease in China
This study is a registry that collects information about people diagnosed with IgG4-related disease (a specific immune-related condition). It helps doctors better understand the condition and how it looks and behaves in real life.
Beijing, Beijing MunicipalityAges Any age - NCT02892877Recruiting
Study for certain pregnancy-related tumor conditions
This study is for people who have a pregnancy-related tumor called gestational trophoblastic disease. It looks at this condition in patients who were diagnosed by blood test (hCG) changes or tissue testing, to better understand and manage the disease.
Pierre-BéniteAges Any age - NCT02485847Recruiting
Join an eye health research registry
This trial is a research registry that collects information from people who are getting eye care. It helps researchers better understand eye disease and outcomes over time, which may improve future care.
San Francisco, CaliforniaAges 6 months+ - NCT02381301Recruiting
Blood and heart CT scan tests for heart blood-flow markers
This study looks at whether certain lab “biomarkers” and a heart CT scan can help understand heart blood flow in people getting routine coronary CT angiography (CCTA). It may be useful for improving how doctors assess heart health from scan and blood results.
Maastricht, LimburgAges 18 years+ - NCT01670695Recruiting
Study people with IgG4-related disease in China
This is a study that follows people diagnosed with IgG4-related disease to better understand the condition. It may help researchers confirm diagnoses and learn how the disease affects different organs over time.
Beijing, Beijing MunicipalityAges 18–75 - NCT02420067Recruiting
Screening for inner-ear tumors in people with Von Hippel-Lindau
This trial focuses on checking whether a specific inner-ear tumor (called an endolymphatic sac tumor) can be found earlier in people with Von Hippel-Lindau (vHL) disease. It may help doctors detect problems sooner so you can discuss treatment options earlier, if needed.
Copenhagen, Copenhagen NAges 15 years+ - NCT03348501Recruiting
MEN1 monitoring study for people in France
This study follows people with Multiple Endocrine Neoplasia type 1 (MEN1) over time, including those with symptoms, certain isolated hormone gland problems, and people without symptoms who have the MEN1 gene change. It may help doctors learn how MEN1 starts and progresses so care can be better timed and personalized.
DijonAges Any age - NCT02060695Recruiting
Study links Parkinson symptom ups and downs over time
This study looks at how changes in movement symptoms and non-movement symptoms happen together in people with early Parkinson disease. It may help doctors better understand what triggers symptom “ups and downs” and how to time treatment or monitoring.
SeoulAges Any age - NCT02488876Recruiting
Banking heart tissue samples after cardiac surgery
This study collects tissue samples from people who are having heart surgery and stores them in a database to better understand the body’s inflammatory (immune) response after surgery. Your participation may help researchers learn why inflammation happens and how to improve care after surgery.
Aachen, North Rhine-WestphaliaAges Any age - NCT03222375Recruiting
Home treatment for autism using special sound and imaging devices
This trial studies a home-based treatment for autism (or related conditions) using specially designed sound, image, and electromagnetic devices. It aims to see whether this personalized “treatment code” and device approach can improve autism-related skills and behaviors.
Louisville, KentuckyAges 1 month–21 years - NCT03625739Recruiting
Study how TB medicines move through children’s bodies
This study looks at how common TB medicines are absorbed, used, and cleared in children who are already taking treatment for tuberculosis. It may help doctors choose safer and more effective doses for children.
BeijingAges 1 day–18 years - NCT03394313Recruiting
Registry study for people with new heart disease and type 2 diabetes
This study records health information to understand how type 2 diabetes and newly diagnosed heart disease affect people over time. It may help doctors learn what to watch for and how to plan care, though it is mainly an observational registry.
DohaAges 18 years+ - NCT02696135Recruiting
Study of Chinese people with hypertrophic cardiomyopathy
This study looks at people with hypertrophic cardiomyopathy (HCM), a heart condition that causes part of the heart muscle to thicken for no clear reason. It will compare how HCM is identified and studied, which may help doctors better understand and manage the condition in Chinese patients.
Beijing, Beijing MunicipalityAges Any age - NCT03508986Recruiting
Parkinson’s family registry for people with Parkinson’s
This trial is a research registry that collects health and family information from people with Parkinson’s disease (and sometimes their close relatives). It may help doctors better understand how Parkinson’s runs in families.
Changsha, HunanAges Any age - NCT03508960Recruiting
Parkinson’s disease registry for people with early onset
This study is a registry that collects information from people with Parkinson’s disease (PD) to better understand the condition, especially in people whose symptoms started by age 50. It may help researchers learn which factors matter most for early-onset PD.
Changsha, HunanAges Up to 50 years - NCT03523104Recruiting
Registry for Parkinson’s with LRRK2 gene variants
This study is a registry that collects information from people with Parkinson’s who have specific LRRK2 gene changes. It helps researchers understand how this genetic form of Parkinson’s behaves over time.
Changsha, HunanAges Any age - NCT03523052Recruiting
People with Parkinson’s and SNCA gene changes
This registry study enrolls people who have Parkinson’s disease and carry certain SNCA gene changes. It aims to better understand how these genetic changes relate to Parkinson’s, which can guide future research and care.
Changsha, HunanAges Any age - NCT03523065Recruiting
Parkinson’s registry for people with GBA gene changes
This registry collects information about people with Parkinson’s who have specific changes in the GBA gene. The goal is to better understand how these gene changes affect Parkinson’s and support future research.
Changsha, HunanAges Any age - NCT03600662Recruiting
Heart valve reconstruction using your own tissue
This trial studies a surgery to repair the aortic valve using tissue taken from your body. It may help people with significant valve problems, by testing whether this reconstruction approach works and is safe.
Munich, BavariaAges 50 years+ - NCT03195556Recruiting
Test ultrasound contrast to improve blood flow in legs
This study checks whether using a special ultrasound with contrast can improve blood flow in people with peripheral artery disease (PAD). If you have leg circulation problems, it may help doctors measure and potentially enhance how well blood reaches your limb.
Portland, OregonAges 19–99
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,548 recruiting general population (no specific condition or disease) studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a general population (no specific condition or disease) trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a general population (no specific condition or disease) trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.