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
- NCT04440761Recruiting
Registry for people with MINOCA heart-related chest pain
This is a research registry that collects information from people diagnosed with MINOCA (a specific type of heart-related injury). It may help researchers better understand causes and outcomes for this condition.
LondonAges 16 years+ - NCT04442100Recruiting
Testing a new easy-change heart valve replacement system
This study tests a biological (tissue) heart valve replacement system designed to be easier to change later. It may help people who need valve surgery because their valve is narrowed or damaged.
Tomsk, Tomsk OblastAges 60 years+ - NCT04442334Recruiting
European registry for people with fatty liver
This registry collects health and lifestyle information from adults with suspected or confirmed fatty liver (NAFLD) to help researchers better understand the condition. You may be asked about diet, exercise, alcohol intake, and some liver-related tests.
AntwerpAges 18–100 - NCT04442646Recruiting
Asthma education program for better self-management
This study looks at an “Asthma School,” an education and support program, to help adults manage their asthma day to day. It may help you learn practical ways to control symptoms and know what to do when asthma flares.
Tradate, LombardyAges 18–85 - NCT04442724Recruiting
MRI and bladder marker planning to guide bladder chemoradiation
This trial uses special MRI scans and tiny markers placed in the bladder to better plan bladder chemoradiation. The goal is to help target treatment more accurately and improve how well it can be delivered.
Los Angeles, CaliforniaAges 18 years+ - NCT04443530Recruiting
Testing Ultimaster stents in everyday patient care
This trial looks at how safe and effective two specific stents are when doctors use them as part of routine care. You may be a candidate if you’re an adult receiving one of these Ultimaster stents and can follow the study check-in schedule.
ChuncheonAges 19 years+ - NCT04444349Recruiting
CoQ10 to reduce inflammation after heart surgery
This study tests whether CoQ10 (a natural nutrient) can lessen harmful inflammation and help protect organs after cardiovascular surgery. If you qualify, you may receive CoQ10 during the surgical period and be followed for how your body responds.
Beijing, Beijing MunicipalityAges 18–90 - NCT04451551Recruiting
PET/CT scan study for reduced blood flow in the heart
This study uses a special PET/CT scan that shows how well blood reaches your heart muscle. It may help doctors better assess suspected or known reduced blood flow (ischemic heart disease).
Aarhus, Aarhus NAges 18 years+ - NCT04454177Recruiting
Smartwatch help to discharge earlier after valve replacement
This study tests whether using a smartwatch can safely help people leave the hospital earlier after a transcatheter aortic valve replacement (TAVR). It checks comfort, safety, and follow-up at home.
Hangzhou, ZhejiangAges 18 years+ - NCT04455932Recruiting
Test shorter MRI versus ultrasound for liver cancer screening
This study compares a shorter, non-contrast MRI and ultrasound to monitor for liver cancer in people with cirrhosis whose ultrasound images aren’t clear enough. It aims to see which method works better and may help you get safer, more reliable follow-up.
Camperdown, New South WalesAges 20–85 - NCT04455906Recruiting
Study why some people with eczema get more severe
This study looks at why disease tends to be more severe in some people with atopic dermatitis (eczema), especially those with a specific genetic change in the IL-4 receptor (IL-4Ra). The results may help explain what drives flare-ups and could guide better treatments in the future.
Boston, MassachusettsAges 6–65 - NCT04461821Recruiting
Breath test to study disease in children
This study uses a special machine to analyze exhaled breath to learn about different illnesses in children and teens. It may help researchers find breathing “signals” that reflect conditions like breathing problems, nervous system issues, or new/worsening type 1 diabetes.
BaselAges Up to 22 years - NCT04466059Recruiting
AI tool for leukemia diagnosis using blood or marrow samples
This study tests whether an AI (computer system) can help improve leukemia and related blood cancer diagnoses. You may be able to help if your doctor is already evaluating you for a possible blood disorder and your sample is high enough quality for testing.
Munich, BavariaAges 18 years+ - NCT04467437Recruiting
Noninvasive brain and nerve stimulation with walking therapy
This study tests whether a noninvasive electrical stimulation applied to the outside of the body, paired with physical therapy, can improve movement and walking for people with neurologic conditions. You may be asked to complete regular therapy sessions and simple movement tasks while the team measures your progress.
Seattle, WashingtonAges 4–70 - NCT04467944Recruiting
Lumbar fusion outcomes with arthritis in nearby spine segments
This study looks at how well lumbar fusion surgery works long-term when the joint just above or below (adjacent segment) already shows wear-and-tear. It may help predict who benefits most and guide treatment planning.
Beijing, Beijing MunicipalityAges 18–80 - NCT04469387Recruiting
Reduce adjacent back pain after lumbar surgery
This trial looks at whether a limited decompression (a careful nerve-space “freeing” procedure) can help prevent future problems in the spinal level next to your planned surgery. It targets people with spinal canal narrowing next to the surgery level but who do not yet have symptoms there.
Beijing, Beijing MunicipalityAges 18–80 - NCT04471493Recruiting
Study of children’s common infections in a clinic program
This trial is for children under 16 who have one of several common infections seen in outpatient or clinic visits. It aims to better study and manage these illnesses using a specific clinical documentation software.
CréteilAges 1 day–16 years - NCT04472338Recruiting
Prostate cancer screening for people with higher genetic risk
This study looks at prostate cancer screening for people who may be at higher risk because of a specific inherited (genetic) change. It may help your care team find the best screening approach to catch aggressive prostate cancer earlier.
Duarte, CaliforniaAges 40 years+ - NCT04477785Recruiting
Study to track Parkinson’s signs using imaging, spinal fluid, and genes
This study is building a large, detailed group of people—some with Parkinson’s and some at higher risk—to understand early changes over time. It uses brain imaging (DaTscan SPECT), sometimes spinal fluid tests (lumbar puncture), and genetic information to help researchers better measure disease and develop future treatments.
Birmingham, AlabamaAges 30 years+ - NCT04477967Recruiting
Creating a liver transplant biobank for children
This trial sets up a long-term collection of medical information and samples from children who have had a liver transplant. It helps doctors study outcomes over time and improve care for future patients.
Chongqing, Chongqing MunicipalityAges 1 month–18 years - NCT04477863Recruiting
Follow-up study for people who had genetic testing in embryos
This trial follows up with people who chose to participate in research when getting preimplantation genetic testing (testing genes in embryos). It may help researchers understand outcomes and improve future genetic testing and counseling.
North Brunswick, New JerseyAges Any age - NCT04478305RecruitingPhase 1
Duavive trial for mood and anxiety in midlife women
This Phase 1 study tests Duavive’s effects on mood and anxiety symptoms in women going through perimenopause or early menopause. It may help clarify whether this treatment can reduce depression and/or anxiety symptoms in midlife.
Hamilton, OntarioAges 45–60 - NCT04483076RecruitingPhase 3
Chemo before stomach surgery with different cycles
This trial studies whether giving oxaliplatin plus S-1 (SOX) chemotherapy before stomach surgery works best when given for different cycle lengths. It may help shrink stage III gastric cancer before a standard D2 gastrectomy and improve outcomes.
Beijing, Beijing MunicipalityAges 18–70 - NCT04492345Recruiting
Back muscle training for posture problems in Parkinson’s
This trial tests a special way to strengthen the back muscles to improve posture problems in people with Parkinson’s (or similar conditions). It may help reduce postural deformities and improve movement comfort while your Parkinson’s treatment stays steady.
Le LamentinAges 18–85
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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.