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
- NCT04785443RecruitingPhase 3
Check whether dye-guided imaging helps find parathyroid glands
This study tests whether using a special camera with a fluorescent dye (called ICG angiography) during total thyroid surgery can help doctors find the parathyroid glands more reliably. It aims to lower the risk of “low parathyroid hormone,” which can lead to low calcium after surgery.
BrestAges 18 years+ - NCT04787744RecruitingPhase 2/Phase 3
Test standard prostate cancer treatment with or without targeted spot radiation
This study tests whether adding targeted local treatment (like radiation to a few spots seen on scans) improves outcomes for some people with limited (oligometastatic) prostate cancer. It compares standard systemic therapy alone versus standard therapy plus PET-scan–guided spot treatment.
Long Beach, CaliforniaAges 18 years+ - NCT04791748Recruiting
Virtual reality balance training for kids with inner-ear problems
This study uses virtual reality tasks to understand and compare balance and movement in children with long-term inner-ear (vestibular) problems versus those without. It may help doctors learn what supports best balance and safety during daily activities.
ParisAges 7 years+ - NCT04793581Recruiting
Testing a small-vessel device for foot circulation problems
This trial checks how well a device called the Pantheris Small Vessel System works to treat blocked small blood vessels in the foot/leg. It may help people improve circulation, but you must meet specific health and follow-up requirements.
Grand Rapids, MichiganAges 18 years+ - NCT04794530RecruitingPhase 3
Cocoa extract trial for walking problems in blocked leg arteries
This Phase 3 study tests whether cocoa extract (cocoa flavanols) can improve walking ability and circulation in people with peripheral artery disease (PAD). It may help people who have PAD-related walking limits and can safely avoid competing cocoa sources and caffeine.
Chicago, IllinoisAges 55 years+ - NCT04796506Recruiting
Tracking sleep changes to improve thinking in Parkinson’s
This study looks at whether changes in “slow wave sleep” (a deep sleep stage) match improvements in thinking for people with Parkinson’s. It uses an exercise/recovery-focused approach and checks sleep and thinking scores to see if these changes go together.
Aurora, ColoradoAges 45–100 - NCT04797286RecruitingPhase 2
Sildenafil for early lung blood-pressure problems in scleroderma
This trial tests whether sildenafil can improve early “high pressure in the lung blood vessels” in people with scleroderma. It may help slow worsening breathing and lung blood-vessel disease before it becomes severe.
New Orleans, LouisianaAges 18 years+ - NCT04799301RecruitingPhase 1
Measure how much sugar you eat using blood and hair samples
This Phase 1 study tests whether “biomarkers” in your blood and hair can accurately measure how much sugar you consume. It may help researchers find better ways to track dietary sugar intake in future nutrition and health studies.
Phoenix, ArizonaAges 18–65 - NCT04802707RecruitingPhase 2
Study drug for mitochondrial depletion disorder due to gene changes
This Phase 2 trial tests a treatment made from deoxynucleosides to help people with mitochondrial depletion disorder caused by certain gene changes. If you match the genetic diagnosis, the study may see whether the treatment improves symptoms or disease markers.
Montreal, QuebecAges 1 month–60 years - NCT04807114Recruiting
Blood or tissue testing to find markers for lung cancer treatment
This study uses detailed “single-cell” testing to look for markers that can predict how well immunotherapy works and what side effects may happen. It is for people with non-small cell lung cancer starting standard first-line treatment.
LeuvenAges 18–120 - NCT04809506Recruiting
Blood and genetic tests to predict future heart problems
This study looks for new body markers (including possible genetic traits) to better predict who is likely to have future cardiovascular events. Your results could help doctors estimate risk and choose prevention strategies more accurately.
ToulouseAges 18–99 - NCT04812314Recruiting
Study how exercise changes body fat and metabolism
This study looks at how starting exercise changes the structure and function of body fat. It may help you understand how exercise affects things like cholesterol and blood sugar, even if you’re not currently exercising regularly.
Ann Arbor, MichiganAges 18–40 - NCT04814082Recruiting
Compare two knee implant types for walking and function
This study compares two designs of knee replacement implants to see how they affect walking, function, and outcomes after surgery. You may be randomly assigned to one of the implant types used for your specific, approved knee replacement.
Baltimore, MarylandAges 18–75 - NCT04814212Recruiting
Testing a drug-coated balloon for people with bleeding risk
This trial looks at whether a “drug-coated balloon” used during a heart procedure (PCI) is safer or better for people who are at higher risk of bleeding while on blood thinners. It may help reduce complications around the time of the procedure in people like you.
Jyväskylä, Central FinlandAges 18 years+ - NCT04815928Recruiting
Registry for people after heart artery procedures
This study is a patient registry that collects information from adults who have had (or will have) two types of heart procedures done to check and treat blocked coronary arteries. It helps doctors understand outcomes and care patterns after these procedures.
AmsterdamAges 18 years+ - NCT04824066Recruiting
Using wearables to spot complications early
This study checks whether common wearable devices can predict or detect problems after treatment or surgery. If you join, the researchers will compare what the wearable shows with what happens to you medically, to see if earlier warnings are possible.
Boston, MassachusettsAges 18 years+ - NCT04825522RecruitingPhase 4
Vancomycin powder during spine surgery to prevent infection
This trial studies whether placing antibiotic powder (vancomycin) directly in the surgical wound during spine surgery can lower the chance of infection. It may help patients by reducing wound infections after surgery, but it also depends on your surgery details and follow-up timeline.
Windsor, OntarioAges 18 years+ - NCT04827498Recruiting
Testing heart blood-flow problems without clogged arteries
This study looks at how well the heart’s blood vessels work in people who have symptoms of reduced blood flow but no major artery blockage. It uses special heart tests with medicines to check how the vessels respond and may help guide better diagnosis and treatment.
MadridAges 18 years+ - NCT04827316Recruiting
Use CT heart scans to predict outcomes and guide care
This study looks at people who are having a CT scan of their heart because it’s medically needed. Researchers will use the scan results to better predict future cardiovascular outcomes and improve how care decisions are made.
BernAges 18 years+ - NCT04838171Recruiting
Study of White Blood Cells in Donors and Patients
This study looks at white blood cells (the body’s immune cells) to learn more about how they behave in health and/or illness. Participation may help researchers understand immune-related changes and support future treatments.
LondonAges Any age - NCT04839757Recruiting
Testing a dengue vaccine plan for kids in the Caribbean
This trial looks at a dengue vaccine strategy in children ages 9 to 17 in Martinique and Guadeloupe. It may help protect kids from dengue, based on how the vaccine is accepted and how the study is carried out.
Fort-de-FranceAges 9–17 - NCT04842006Recruiting
Personalized treatment plan for rectal cancer before and after surgery
This trial looks at a personalized treatment approach for rectal cancer. It aims to guide the best chemotherapy and (if needed) radiotherapy before and after surgery, based on scans and specific test results.
Helsinki, UusimaaAges 18–100 - NCT04848636Recruiting
Sodium MRI scan to study heart salt changes in kidney disease
This trial uses a special MRI scan (called sodium MRI) to measure salt (sodium) in the heart. It compares people with chronic kidney disease (including those on hemodialysis) to healthy volunteers to understand how kidney disease may affect the heart.
London, OntarioAges 18 years+ - NCT04851015RecruitingPhase 3
Low-dose TMP-SMX for Pneumocystis pneumonia (PCP)
This Phase 3 study tests whether low-dose trimethoprim-sulfamethoxazole (also called TMP-SMX) can treat Pneumocystis pneumonia (PCP) in people with weakened immune systems. It may help improve treatment while reducing side effects compared with standard dosing.
Montreal, QuebecAges 18–100
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,808 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.