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 10,802 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04804202Recruiting
Virtual cycling program for people with Parkinson disease
This study tests whether a virtual, guided stationary bike exercise program is safe and helpful for people with Parkinson disease. It may help improve movement and fitness by letting you ride at home or in a controlled setting while using visual and audio guidance.
Newark, New JerseyAges 45–75 - NCT04803916Recruiting
Balloon dilation study for Crohn’s bowel strictures
This study looks at inflammation just before a narrowed section of the bowel in people with Crohn’s disease, using planned endoscopic balloon dilation. It may help doctors better understand what drives narrowing and inflammation so treatment can be timed and chosen more effectively.
JerusalemAges Any age - NCT04806282Recruiting
Study to track hearing instability and find helpful targets
This study follows adults with hearing instability to better understand what causes it, measure it in new ways, and look for potential treatment targets. If you qualify, you may get hearing and balance-related testing (including scans) over a period of time.
Bethesda, MarylandAges 18–80 - NCT04807868Recruiting
Liver fat registry for adults with or at risk for fatty liver
This study builds a research registry (and optional test results follow-up) for adults who either need a routine liver biopsy or may have fatty liver risk based on body weight and other health history. It helps researchers learn more about non-alcoholic fatty liver disease (fatty liver not caused by alcohol) and how it may progress.
Orlando, FloridaAges 18 years+ - NCT04808596Recruiting
Pulmonary hypertension registry and blood sample study
This study builds a registry and collection system for people with pulmonary hypertension, confirmed by a specific heart test. By joining, you help researchers learn more about the condition and may support future studies.
Kansas City, KansasAges 18 years+ - NCT04817072Recruiting
Studying mood changes in inflammatory arthritis patients on biologics
This study looks at how mood disorders (like depression or anxiety) affect people with chronic inflammatory joint diseases when they use biologic medicines. It may help doctors understand which patients are at higher mood-risk and how to monitor them.
BesançonAges 18–80 - NCT04833894RecruitingPhase 2/Phase 3
Efgartigimod for children with generalized myasthenia gravis
This trial studies how efgartigimod (given through a vein) behaves in children and whether it is safe and effective for generalized myasthenia gravis. It is designed for children who have not done well enough with standard treatments like steroids or other immune medicines.
Chicago, IllinoisAges 2–18 - NCT04832607RecruitingPhase 3
Donor T-cell treatment for stubborn CMV, EBV, or Adenovirus after transplant
This Phase 3 trial tests giving special immune cells from your stem-cell donor to treat difficult-to-control viral infections after a stem cell transplant. It may help your body fight the virus when standard antiviral medicines haven’t worked well enough.
BrusselsAges 2 months+ - NCT04844060Recruiting
Study collecting spinal fluid from patients needing a lumbar puncture
This study collects cerebrospinal fluid (the fluid around the brain and spinal cord) during a lumbar puncture. It aims to improve how doctors use this information for accurate diagnosis in patients who need the procedure.
StrasbourgAges Any age - NCT04848844Recruiting
Congenital heart disease transplant registry study for adults
This study collects and shares anonymous information about adults being considered for a heart transplant because of a congenital (from birth) heart problem or an inherited heart muscle condition. The goal is to better understand these patients and support research that may improve care.
HamburgAges 18 years+ - NCT04848077Recruiting
Smartphone exercise program for early Parkinson’s patients
This trial tests whether a motivating phone-based exercise plan can help people with early-stage Parkinson’s move more safely and consistently. You may qualify if you can walk on your own, understand Dutch, and are fairly inactive right now.
Nijmegen, GelderlandAges 18 years+ - NCT04848623Recruiting
Listening test to find voice clues of long-term health
This study is looking for “vocal biomarkers,” meaning voice patterns that could hint at how well people are doing with chronic (long-term) health conditions. Your participation would involve providing voice samples so researchers can see what voice features relate to health.
LuxembourgAges 15 years+ - NCT04849806Recruiting
Testing whether heart nerve signals predict COPD symptoms
This study looks at “sympathetic nerve activity” (signals from the nervous system that affect the heart) in adults with chronic obstructive pulmonary disease (COPD). The goal is to see whether these measurements can help predict what happens to people with COPD.
AachenAges 18 years+ - NCT04850053Recruiting
Using brain-related “seeds” to help diagnose Alzheimer’s disease
This study looks for specific markers (“seeds”) that may help doctors diagnose Alzheimer’s disease and distinguish it from other memory or thinking conditions. If you are in the right age range and can complete memory testing and provide a sample, you may help validate a diagnostic approach.
Beijing, Beijing MunicipalityAges 55–75 - NCT04856501Recruiting
Parenting support for preterm toddlers’ brain and self-control
This study tests whether a responsive parenting program helps toddlers born early think, learn, and manage behavior more easily. It also checks whether families can complete toddler brain and behavior assessments (including brain scans).
Houston, TexasAges 1.3 years–2.5 years - NCT04858412Recruiting
Amino acid supplement to help people with COVID-19 and alcohol liver disease
This study tests whether an HMB-enriched amino acid supplement can improve outcomes in adults who have COVID-19 pneumonia, especially those with alcohol-related liver disease. The trial compares results in people with alcohol liver disease versus those without, to see if the supplement helps during recovery.
Cleveland, OhioAges 21 years+ - NCT04867408Recruiting
Using bowel scope images to improve inflammatory bowel disease training
This study uses pictures taken during routine bowel scope (endoscopy) to build and test a computer system for training and research in inflammatory bowel disease. It may help doctors and trainees interpret scope images more consistently over time.
Hull, East YorkshireAges 16–99 - NCT04886726RecruitingPhase 1
New medicine to prevent graft-versus-host disease after transplant
This Phase 1 study tests a new combination of medicines to prevent graft-versus-host disease (GVHD) after an allogeneic stem cell transplant. If it works well, it may lower the chance and severity of GVHD, which can affect skin, liver, and the gut.
Detroit, MichiganAges 18–70 - NCT04890483Recruiting
Brain stimulation to ease pain and fatigue after COVID
This study tests whether a noninvasive brain stimulation treatment can reduce fatigue and body pains after COVID in people with autoimmune diseases. It may help symptoms by changing brain activity without surgery.
São PauloAges 18–80 - NCT04896047Recruiting
Test whether FGF19 helps non-diabetic kidney disease
This study looks at FGF19 to see if it can improve chronic kidney disease in people who do not have diabetes. Participants may receive FGF19 (and may need extra testing such as muscle biopsies).
Pierre-BéniteAges 18–70 - NCT04897516RecruitingPhase 3
Test whether shorter benznidazole courses work for Chagas
This trial compares a shorter course of benznidazole (a medicine for Chagas disease) to the standard longer treatment. It aims to see if the shorter regimen works as well and is safe for people with confirmed Chagas infection.
Buenos AiresAges 18–60 - NCT04902703RecruitingPhase 2
GM-CSF drug trial for mild to moderate Alzheimer’s disease
This Phase 2 study tests whether sargramostim (a GM-CSF related medicine) is safe and can slow or improve Alzheimer’s symptoms. You might be a good fit if you have mild or moderate Alzheimer’s, positive amyloid testing, and can complete frequent visits with a close caregiver who knows you well.
Aurora, ColoradoAges 60–85 - NCT04903912Recruiting
Study of people with blocked blood vessels or aneurysms
This registry study follows people with peripheral artery disease (blocked leg arteries), certain carotid artery narrowing, or an abdominal aortic aneurysm. It may help doctors better understand these conditions and improve care over time.
NaplesAges 18–90 - NCT04912323Recruiting
Drug dissolving stent for blocked below-knee arteries
This trial studies a drug-eluting dissolving scaffold placed in blocked arteries below the knee to improve blood flow. It may help people whose leg circulation problems are severe enough to limit walking or threaten the limb, but only if their blockages fit specific imaging and procedure requirements.
GrazAges 18–90
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,802 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.