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
- NCT05336851Recruiting
Emergency breathing test study for sudden lung infections
This trial tests an emergency breathing-related approach for adults with a sudden, community-acquired respiratory infection. It may help doctors quickly sort out what’s going on and guide early care.
Hong KongAges 18–100 - NCT05321316Recruiting
PET scan test for bladder cancer using a targeted tracer
This trial studies a special PET/CT scan tracer that is designed to bind to a protein (Nectin-4) found in some bladder cancers. It aims to help doctors see and stage tumors more clearly, which could improve diagnosis and treatment planning.
Beijing, Beijing MunicipalityAges 18–75 - NCT05328505Recruiting
Imaging-guided radiation for prostate cancer that came back
This trial tests whether a special scan (PSMA PET) can help doctors aim and adjust radiation more precisely when prostate cancer returns after surgery. It may help by increasing dose to areas that look involved while lowering dose to uninvolved pelvic areas.
London, OntarioAges 18 years+ - NCT05322785Enrolling by invitation
Breathing sample study to improve exhaled biomarker testing
This study works on better ways to collect and analyze substances from your breath. It may help researchers test how well these “breath markers” reflect lung or whole-body inflammation.
Indianapolis, IndianaAges 4–110 - NCT05313945Recruiting
Compare comfort after passive vs active catheter removal
This study tests which method of removing an in-place urinary (bladder) catheter is more satisfying and comfortable for patients after certain urologic procedures. If you qualify, you may be randomly assigned to one of two removal approaches and asked about your experience.
GrenobleAges 18 years+ - NCT05361694Recruiting
Study aims to distinguish stable vs worsening early myeloma
This study looks at two different “precursor” conditions that can happen before multiple myeloma: MGUS and smoldering myeloma (SMM). Researchers want to better tell which cases are more likely to progress, using blood/urine tests and sometimes bone marrow tissue.
Miami, FloridaAges 18 years+ - NCT05359991Recruiting
Exercise study in children and teens with lung or blood conditions
This study tests how safe and effective a structured exercise program is for children and teens. It also compares results between children with sickle cell disease, cystic fibrosis, and healthy peers (and some teens after COVID-19 infection).
Irvine, CaliforniaAges 10–17 - 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 - NCT05266976Recruiting
Exercise types and bone markers in healthy older veterans
This study compares different ways of exercising to see how they affect “bone-related” blood markers in older adults. It may help you and researchers understand which exercise patterns support healthy bones.
Aurora, ColoradoAges 60 years+ - NCT05272241Recruiting
Asthma registry that helps researchers learn about asthma
This study enrolls people in specific cities to collect health information that helps researchers better understand asthma and how to recruit future studies. It may help by improving knowledge about asthma types and care in real-world settings.
Aurora, ColoradoAges Any age - NCT05266222Recruiting
Collecting respiratory virus samples for a research library
This study collects samples from people who have or might have a cold/respiratory virus, then stores them for future research. It may help researchers better understand respiratory germs and develop better treatments.
Bethesda, MarylandAges 3 years+ - NCT05289687RecruitingPhase 2
Daratumumab for hard-to-clear T-cell leukemia traces
This Phase 2 trial tests daratumumab (a targeted antibody medicine) in people with T-cell ALL whose leukemia is not fully gone at very low levels. The goal is to eliminate “minimal residual disease” (MRD) that can predict relapse, so treatment may be more effective after intensive chemotherapy.
Chicago, IllinoisAges 18 years+ - NCT05307731RecruitingPhase 4
Fingolimod for adults with type 2 diabetes
This trial studies whether fingolimod can improve diabetes in adults with type 2 diabetes who are not yet on many medications. It will mainly check whether the drug is safe and whether it can help control blood sugar over time.
ShenyangAges 18–70 - NCT05279040Recruiting
Trikafta plus exercise program for adults with cystic fibrosis
This study tests how starting Trikafta affects exercise ability and breathing in adults with cystic fibrosis. You may be asked to do supervised breathing and exercise tests to see if Trikafta helps your lung function and stamina.
Vancouver, British ColumbiaAges 19 years+ - NCT05297279Recruiting
Omega-3 diet program for people with COPD
This trial tests whether increasing omega-3 (from diet and/or supplements) helps people with COPD. It enrolls people with low omega-3 intake and asks them to follow a specific dietary plan during the study.
Baltimore, MarylandAges 40 years+ - NCT05282654Recruiting
Using phone symptom check-ins to prevent problems after discharge
This trial studies a real-time symptom monitoring system (ePROs) that collects your symptoms during care transitions, like when you leave the hospital. The goal is to catch warning signs early so you can avoid adverse events after discharge.
Boston, MassachusettsAges 18 years+ - NCT05288790RecruitingPhase 2
Study how gut chemicals and alcohol affect heart risk in HIV
This Phase 2 study looks at how “microbiome metabolites” (chemicals from gut bacteria) and alcohol may affect heart and blood vessel risk in people living with HIV. If you qualify, you may be asked to follow a study plan to see how these factors change health markers related to cardiovascular disease.
Nashville, TennesseeAges 18–89 - NCT05285917RecruitingPhase 3
Hydroxyurea safety study for young children with sickle cell
This trial tests a way to use hydroxyurea more safely and effectively in children with sickle cell anemia. It may help doctors fine-tune dosing to reduce complications and side effects.
LuandaAges 6 months–12 years - NCT05265299RecruitingPhase 3
Testing the right aspirin dose for COPD symptoms
This Phase 3 trial studies which aspirin dose works best in people with COPD, with the goal of improving disease control. You may be asked to take aspirin and be monitored for safety, especially bleeding risk and heart/brain history.
Baltimore, MarylandAges 40–80 - NCT05282550RecruitingPhase 2
Trazodone trial to improve sleep in early Alzheimer’s
This study tests whether the sleep medicine trazodone can improve thinking and memory in people with early Alzheimer’s-related changes who also have sleep problems. If better sleep helps the brain, it may improve memory test results over time.
Baltimore, MarylandAges 55 years+ - NCT05301101Recruiting
Re-irradiation planning for tumors near previously treated organs
This study tests a more personalized way to plan “re-irradiation,” meaning giving radiation again in an area that was already treated before. It aims to better calculate organ risk to reduce harmful side effects while treating cancer.
Milwaukee, WisconsinAges 18 years+ - NCT05273424Enrolling by invitation
Study of outcomes for people on long-term dialysis
This study looks at health outcomes for people living with chronic kidney disease who have been on hemodialysis for more than 90 days. It may help doctors better understand what to expect over time and how dialysis care can be improved in Brazil.
Pelotas, Rio Grande do SulAges 18 years+ - NCT05259150Enrolling by invitation
Health for Hearts program for Black adults
This study is testing a community health program aimed at improving heart health. It is designed specifically for Black adults and looks at whether the program is helpful for people like you.
Tallahassee, FloridaAges 18 years+ - NCT05300997Recruiting
Test blood and antibody markers for suspected acute stroke
This study looks at blood tests to find signs of immune activity after a suspected stroke. It may help doctors diagnose stroke faster and better understand what is happening in the body soon after symptoms start.
Hong KongAges 18–100
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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.