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 10,813 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07397845Recruiting
Stents vs drug-coated balloons for small or complex heart vessels
This trial compares two treatments—stents and paclitaxel-coated balloons—for people with narrowed heart arteries that are small, long, or complex. It aims to find which option works better to restore blood flow.
Lucerne, Canton of LucerneAges 18 years+ - NCT01644903Recruiting
Checking biomarkers after a liver transplant
This study follows people who are getting a liver transplant (including repeat transplants) to monitor changes in their body using test results. It may help doctors understand how patients are doing after transplant and improve care over time.
Chicago, IllinoisAges 18 years+ - NCT00106925Recruiting
Long-term follow-up for people after stem cell transplant
This study follows people who are at least 3 years out from their first stem cell transplant to learn how they are doing long term. It may help improve future transplant care by tracking outcomes over time.
Bethesda, MarylandAges 7–80 - NCT00018044Recruiting
Understanding Immune Defects in Mycobacterial Infections
This research study aims to better understand why some people develop unusual bacterial infections (mycobacterial infections) that don't respond well to standard treatments. Researchers will examine your immune system and may study family members to identify genetic factors that increase infection risk.
Bethesda, MarylandAges Up to 100 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 - NCT01731353Recruiting
FungiScope study for confirmed invasive fungal infections
This study enrolls people who have test results showing an invasive fungal infection (a fungus causing illness inside the body). The goal is to build a global registry to better understand these infections and improve future care.
Cologne, North Rhine-WestphaliaAges Any age - NCT00390104Recruiting
Study uses blood and skin samples to learn muscular disease causes
This study looks at samples from people with muscular dystrophy and from close relatives, to better understand neuromuscular diseases. You may be asked to provide a skin biopsy for research to help with genetic and molecular analysis.
Boston, MassachusettsAges 1 week–100 years - NCT01277419Recruiting
Study of new cases of several spine, joint, and eye diseases
This study enrolls people who have recently been diagnosed with certain inflammatory conditions affecting the spine, joints, or the eye. Researchers are looking to better understand how these illnesses start and how they may be linked, which could help guide future care.
BerlinAges Any age - NCT00071526Recruiting
How the body loses vitamin C in diabetes
This study looks at why people with diabetes may lose more vitamin C in their urine than people without diabetes. By understanding this difference, researchers hope to better understand how diabetes affects the body's nutrition.
Bethesda, MarylandAges 18–65 - NCT01558479Recruiting
Parkinson’s genetics study for adults in affected families
This study looks at genetic (inherited) factors in Parkinson’s disease. It may help researchers better understand why Parkinson’s happens and could guide future prevention or treatments.
Atlanta, GeorgiaAges 18 years+ - NCT00286637Recruiting
New tests to diagnose glaucoma and related eye problems
This study tests new ways to diagnose glaucoma (and sometimes related eye conditions) using eye exams and measurements. It may help improve how doctors detect glaucoma earlier and more accurately.
Philadelphia, PennsylvaniaAges 18 years+ - NCT01621594Recruiting
Testing new radiation methods for heart CT images
This trial studies newer ways to take heart and blood vessel CT scans while using radiation more carefully. It may help improve image quality for people needing coronary CT angiography.
Bethesda, MarylandAges 18–100 - NCT02038127Recruiting
Health registry for people getting a drug-coated heart stent
This study follows people who need a coronary (heart) stent to see how they do after treatment. It does not sound like an experimental drug trial for you—it’s mainly about collecting health information after a stent procedure.
Chuncheon, Gangwon-doAges 19 years+ - NCT00258583Recruiting
ILD patient registry at UPMC Simmons Center
This study is a registry that collects information from adults with interstitial lung disease (ILD) who are seeking care at the UPMC Simmons Center. It helps the center learn about ILD and improve future treatment planning.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT00899626Recruiting
Collecting stool and tissue markers from people with bowel conditions
This study collects samples (like tissue and other body fluids) from people who are getting a colonoscopy or similar camera test. It aims to find “biomarkers,” which are measurable signals that may help doctors better understand or detect bowel problems such as colorectal cancer, polyps, or inflammatory bowel disease.
Nashville, TennesseeAges 18 years+ - NCT01386424Recruiting
Healthy adult check-in for future infectious-disease volunteer studies
This study enrolls healthy adults to help set up future research studies about infectious diseases. If you qualify, you may be asked to join later “healthy volunteer” experiments and allow your samples to be stored for future research.
Bethesda, MarylandAges 18–65 - NCT00373841Recruiting
Study of genetic and protein changes in idiopathic pulmonary fibrosis
This study looks at genetic (DNA) and protein changes over time in people with idiopathic pulmonary fibrosis, to better understand how the disease progresses. Your participation may help researchers learn patterns that could guide future care.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT00001244Recruiting
Studying Immune System Disorders and Family Genetics
This research study examines how the immune system malfunctions in patients with common variable immunodeficiency (CVID)—a condition where the body doesn't make enough antibodies to fight infections. Researchers want to understand the genetics and immune patterns to help develop better treatments. Family members may also be asked to participate to help identify genetic causes.
Bethesda, MarylandAges 2–120 - NCT00001529Recruiting
Bone marrow cell selection method study for transplants
This study tests improved ways to select and collect bone marrow cells from healthy donors for use in transplants. Researchers are looking for healthy volunteers to donate cells that may help people who need bone marrow transplants.
Bethesda, MarylandAges 18–60 - NCT01733082Recruiting
Mycophenolate pregnancy registry for mothers in the U.S.
This study collects information about pregnancies where a mother took mycophenolate during pregnancy (or stopped within the prior 6 weeks). It aims to better understand pregnancy outcomes and risks so care can be improved for future patients.
Cambridge, MassachusettsAges Any age - NCT00001205Recruiting
Understanding neurocysticercosis outcomes in treated patients
This study follows patients who have been treated for neurocysticercosis—a brain infection caused by a parasite—to learn how they recover over time and what long-term effects they experience. By joining, you'll help doctors better understand this condition and improve care for future patients.
Bethesda, MarylandAges 3–99 - NCT01980264Recruiting
Optical skin exam to help detect melanoma and skin cancers
This trial tests an at-home/clinic skin-scanning method (using light) to look for signs of melanoma, basal cell cancer, or squamous cell cancer. You may be able to help researchers see whether this non-invasive “virtual biopsy” can guide diagnosis, especially in people with different skin types.
TaipeiAges 18–90 - NCT00001595Recruiting
Study of pituitary tumors and related hormone gland disorders
This research study investigates tumors and disorders of the pituitary gland (a small gland that controls many body hormones) and related areas of the brain. You may qualify if you have a pituitary tumor or disorder, or if you have a family history of these conditions.
Bethesda, MarylandAges 2–70 - NCT02026388Recruiting
Kidney stone DNA and tissue sample biobank study
This study collects and stores donated samples (like blood, urine, and tissue) from people with certain rare inherited kidney stone conditions. The goal is to build a resource for future research that could help improve diagnosis and treatment.
Rochester, MinnesotaAges Any age
Hear when a new General Population (no Specific Condition or Disease) trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,813 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.