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
- NCT04962295Recruiting
Brain MRI study for small blood vessel changes
This study builds a brain imaging biobank for people with “small blood vessel disease” seen on MRI. Your MRI results can help researchers better understand these changes and track new events over time.
BeijingAges 18 years+ - NCT04960826Recruiting
Study of an environmental risk factor in Crohn’s
This study looks at how an environmental factor may be linked to Crohn’s disease, especially around the time you need certain bowel surgery. Your experience may help researchers understand risk and how it relates to your gut health.
LilleAges 25–60 - NCT04962711Recruiting
Risk-guided plan to prevent heart failure after cancer treatment
This trial tests whether a personalized, risk-based heart care plan can help prevent heart failure in people who had certain cancer treatments. It focuses on monitoring and guiding treatment, using heart ultrasound results and other health factors.
Melbourne, VictoriaAges 40–85 - NCT04965545Recruiting
Tests for diagnosing Wilson disease using special lab findings
This trial is for people who already have a genetic diagnosis of Wilson disease. It looks at whether specific lab tests and a physical eye finding can help confirm and support the diagnosis.
Hangzhou, ZhejiangAges 6–65 - NCT04968288Recruiting
Study of the natural course of KSHV-related Castleman disease
This study looks at how KSHV-associated multicentric Castleman disease naturally progresses over time, without necessarily testing a new treatment. It may help doctors better understand the disease and what changes to watch for, which could guide future care.
Bethesda, MarylandAges 18 years+ - NCT04969926Recruiting
Study of parathyroid problems in children and adults
This is an observational study that follows people who have or may develop parathyroid-related conditions. The goal is to better understand how these problems change over time and what patterns show up, which can help improve future care.
Bethesda, MarylandAges 6 months–100 years - NCT04973423Recruiting
Testing extra check-ins for Crohn’s using stool tests and MRI
This study checks whether adding an extra, cross-body “transmural” evaluation (looking at inflammation throughout the bowel) improves care for adults with Crohn’s who are starting or receiving biologic (biotherapy) treatment. It uses close follow-up with stool calprotectin (a marker of gut inflammation) to see if this approach helps control inflammation.
AmiensAges 18 years+ - NCT04973579Recruiting
Stent plus heart surgery for high risk carotid patients
This trial looks at whether doing carotid artery stenting at the same time as heart surgery is safe and effective for people at high risk of stroke around the time of surgery. It targets people with significant carotid narrowing who also need heart surgery for specific heart problems.
KrakowAges 18 years+ - NCT04986332Recruiting
Program for COPD or heart failure in people with other illnesses
This trial studies a detailed, whole-body program to improve outcomes in people with COPD or heart failure, especially those who also have several other chronic conditions. It may help by improving activity and monitoring health markers over about 24 weeks.
PalermoAges 45–75 - NCT04993885RecruitingPhase 2
Avatrombopag for adults with immune low platelets
This trial studies avatrombopag to raise platelet counts in adults with immune thrombocytopenia (ITP) caused by autoimmune conditions. It may help reduce bleeding risk when platelet levels are very low.
Tianjin, Tianjin MunicipalityAges 18 years+ - NCT04997733RecruitingPhase 3
Stool transplant to maintain Crohn’s remission after stopping anti-TNF
This Phase 3 study tests whether transplanting stool bacteria can help people with Crohn’s stay in remission after they stop an anti-TNF medicine. It may help some patients who are currently doing well but need to come off anti-TNF treatment.
ParisAges 18–74 - NCT04998396RecruitingPhase 1/Phase 2
Gene therapy trial for Canavan disease in young children
This Phase 1/2 trial tests an AAV9 gene therapy to treat Canavan disease. It aims to improve disease-related findings in children whose genetic test confirms ASPA gene changes.
Oakland, CaliforniaAges Up to 2.5 years - NCT05002166Recruiting
Study of children with inflammatory bowel disease risks
This study looks at the typical features and risk factors in children diagnosed with inflammatory bowel disease (IBD). It may help families understand what affects IBD in kids, even if it is not testing a new treatment.
AsyutAges Up to 18 years - NCT05003986RecruitingPhase 2
Sparsentan for children with protein leaking kidney diseases
This Phase 2 study tests sparsentan in children with certain kidney diseases that cause high amounts of protein in the urine. It aims to see if the medicine can reduce kidney damage signals and protein leakage compared with standard care.
Los Angeles, CaliforniaAges 1–17 - NCT05006859Recruiting
Wheelchair positioning for people with neuromuscular conditions
This trial looks at improving wheelchair positioning for people with neuromuscular diseases. Better positioning may help comfort, safety, and support day-to-day movement in a wheelchair.
AincourtAges 8 years+ - NCT05012033Recruiting
Study how high-dose steroids move through the body
This study measures blood levels of high-dose steroid medicines (prednisolone or related steroids) to understand how the body processes them in different real-life situations. It may help improve how steroids are dosed and monitored for people needing short-term or longer-term anti-inflammatory treatment.
LondonAges 18–75 - NCT05017142Recruiting
Pediatric brain inflammation registry for Swiss patients
This study is a registry that collects health information from children and teens in Switzerland diagnosed with certain inflammatory brain and spinal cord conditions. It helps researchers understand these illnesses better over time and may guide future treatments.
Aarau, Canton of AargauAges Up to 36 years - NCT05020106Recruiting
Tests Alzheimer’s core blood/brain markers to set diagnostic cutoffs
This study checks Alzheimer’s “core biomarkers” to find the best cut-off values for diagnosing Alzheimer’s disease and related conditions. It may help doctors more accurately tell Alzheimer’s, mild cognitive changes, and other causes of memory problems apart.
Beijing, Beijing MunicipalityAges 55–75 - NCT05021601Recruiting
Ablation method comparison for rheumatic valve and ongoing AF
This study compares two heart procedures—targeting one or both upper heart chambers versus only the left upper chamber—to treat people with ongoing atrial fibrillation caused by rheumatic mitral valve disease. It aims to see which approach works better and is safer for restoring normal rhythm.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05020626Recruiting
Uses brain MRI data to study Alzheimer’s disease diagnosis
This study uses brain MRI images to better understand how a protein called tau spreads in Alzheimer’s disease and related conditions. If you’re 55 or older and had an MRI close to your diagnosis, you may be eligible.
Hong Kong, ShatinAges 55 years+ - NCT05025254Recruiting
Online thinking tests for people with Parkinson’s disease
This study tests online “thinking” (cognitive) abilities in people with Parkinson’s disease. It may help researchers better understand how thinking changes over time and how tests can be done from home.
Montreal, QuebecAges 45–90 - NCT05025774Recruiting
Exercise program study for young heart, leukemia, and lung survivors
This study looks at how an exercise program affects fitness and lung function in young people who are survivors of certain conditions (heart transplant, leukemia, or lung disease from prematurity). The goal is to see whether exercise can improve breathing and overall physical function safely.
Minneapolis, MinnesotaAges 8–25 - NCT05026138Recruiting
Study of severe HPV disease and why it keeps coming back
This study follows people with severe or hard-to-treat HPV-related conditions (and some closely related partners/household contacts) to learn how the virus causes illness and how the immune system responds. It may help doctors better predict who will develop severe disease and guide future treatments.
Bethesda, MarylandAges 3–100 - NCT05039411RecruitingPhase 1
Cord stem cell treatment for Crohn’s perianal fistulas
This Phase 1 study tests whether donor umbilical cord stem cells are safe for treating fistulas (abnormal tunnels) near the anus in people with Crohn’s disease. It’s mainly looking at safety, and it may help some people’s symptoms if the approach is workable.
Kuala LumpurAges 18 years+
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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.