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 10,808 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - NCT03524222Recruiting
Home hospital care for adults after sudden illness
This trial tests whether certain adults can safely receive hospital-level care at home instead of staying in the hospital, using a home care team. It may help you recover in your own home if your condition fits their plan and you have support at home.
Boston, MassachusettsAges 18 years+ - NCT03535545RecruitingPhase 1
PET-MRI imaging test in lung cancer and lung disease
This Phase 1 study tests a radioactive imaging agent to help doctors see disease activity in the lungs using PET/MRI scans. It includes healthy volunteers and people with lung cancer, idiopathic pulmonary fibrosis, lung transplant–related lung problems, or certain medication-related lung inflammation.
Boston, MassachusettsAges 18–80 - NCT03538600Recruiting
Sample collection from healthy volunteers to improve test accuracy
This study collects multiple types of samples (like blood, stool, saliva, and swabs) from healthy people. The goal is to optimize lab tests for future research, which may help doctors and scientists run more accurate immune-related measurements.
Bethesda, MarylandAges 3–80 - NCT03542734Recruiting
Imaging study for thinking and brain changes in older adults
This study looks at brain scans and eye/eye-nerve findings to understand why thinking can change with aging. It may help researchers connect eye and brain changes, which could guide future ways to prevent or detect dementia early.
HangzhouAges 40 years+ - NCT03546231Recruiting
Understanding Tricuspid Valve Leakage: A Research Study
This study looks at people with moderate or severe leakage in the tricuspid valve (a valve in the right side of the heart) to understand how the condition develops and what outcomes patients experience. Researchers want to learn more about this condition so they can improve care.
AmiensAges 1.5 years+ - NCT03547856Recruiting
Registry study for blood pressure control in adults
This study collects health information to understand how well people with high blood pressure (who take blood pressure medicines) reach their blood pressure targets. It may help improve future guidance on blood pressure monitoring and control.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT03549559Recruiting
Heart imaging study in healthy people and specific conditions
This study uses heart imaging to look at changes in the heart muscle. It includes healthy volunteers and people with diabetes or aortic stenosis, to understand differences seen on scans.
Boston, MassachusettsAges 18–85 - NCT03549858Recruiting
Survey study on burdens and experiences of people with hemophilia
This study collects information from people with hemophilia about how treatments and daily life affect them. It uses your answers to improve patient-focused care and understand what challenges matter most.
Hamilton, OntarioAges Any age - NCT03559569Recruiting
Study blood changes in people with circulatory shock
This study looks at how blood vessel and white blood cell aging changes during circulatory shock. Your participation may help doctors better understand what’s happening in the body during shock.
StrasbourgAges 18 years+ - NCT03563417Recruiting
CTO treatment vs medicines after heart scan
This trial studies whether opening a blocked coronary artery (a CTO) helps people more than staying on the best available heart medicines after an initial 3-month treatment period. It uses heart imaging to confirm there is reduced blood flow in the area supplied by the blockage.
Aarhus NAges 18 years+ - NCT03569826Recruiting
Study for primary biliary cholangitis and autoimmune hepatitis
This study is for people diagnosed with primary biliary cholangitis or autoimmune hepatitis. It aims to learn more about these autoimmune liver conditions and may help guide better care in the future.
Calgary, AlbertaAges 18 years+ - NCT03572465Recruiting
Ultrasound tests to diagnose fatty liver inflammation
This study checks whether special ultrasound measurements can help diagnose nonalcoholic steatohepatitis (NASH), a type of fatty liver disease. You may need a liver biopsy as part of routine care, and you may also be scanned with MRI to support the study tests.
Montreal, QuebecAges 18 years+ - NCT03577327Recruiting
Study gut and skin germs in vitiligo progression
This study looks at differences in the gut and skin microbiome (the germs living in and on the body) in people with vitiligo and in people without vitiligo. It aims to understand what might be linked to how vitiligo spreads over time.
Chicago, IllinoisAges 18–89 - NCT03586518Recruiting
Non-contrast heart MRI test in dialysis patients
This trial checks whether a new kind of heart MRI (done without contrast dye) can help doctors see heart changes in people receiving hemodialysis. It may help improve how heart health is measured in dialysis care, especially for people with limited time.
Leicester, LeicestershireAges 18 years+ - NCT03586258Recruiting
Brain scan and memory testing for people with brain injury
This study uses memory and thinking tests along with brain scans (likely MRI) to understand how different types of brain damage affect thinking. It may help doctors learn more about brain-related cognitive problems.
CaenAges 18 years+ - NCT03587922Recruiting
Test a dissolving heart stent for blocked heart arteries
This study tests a dissolving scaffold (a type of temporary heart stent) in people with narrowed coronary arteries that are causing reduced blood flow. It aims to see if the device can be safely used as part of planned stenting or emergency bypass when needed.
ViennaAges 18 years+ - NCT03588481Recruiting
Check DeSyne X2 coronary stent in a heart registry
This study adds people to a registry to track outcomes after getting a specific heart stent called DeSyne X2. It may help doctors understand how well this stent works and how it affects recovery over time.
IncheonAges 19 years+ - NCT03595267Recruiting
Kidney health checks and care for Indigenous communities
This study offers kidney-related health screening and follow-up care for people in Indigenous communities. It’s designed to help check kidney health early using simple health measurements, and may help you get guidance sooner if anything looks off.
Calgary, AlbertaAges 10–80 - 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+ - NCT03604835Recruiting
MPS VII monitoring program for patients and caregivers
This trial enrolls people with mucopolysaccharidosis type VII (MPS VII) to track their health over time. It may help your care team better understand how the condition behaves and how monitoring should be done.
Orange, CaliforniaAges Any age - NCT03615690Recruiting
Fasting-mimicking diet test for ulcerative colitis
This study tests whether a “fasting-mimicking diet” can improve mild to moderate ulcerative colitis. You would follow the study diet plan and be monitored to see if symptoms and disease activity change.
Palo Alto, CaliforniaAges 18–70
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,808 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.