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
- NCT04436081RecruitingPhase 2
CBD oil without THC for agitation in Alzheimer’s dementia
This trial studies whether a THC-free CBD oil softgel can reduce agitation in people with Alzheimer’s-related dementia. It compares CBD to a control to see if it improves difficult behaviors and is safe over the study period.
Norfolk, VirginiaAges 50–90 - NCT04440254Recruiting
Long ECG monitoring for Fabry disease heart rhythm
This study checks how your heart’s electrical rhythm looks over a longer period using an ECG (a heart rhythm recording) in people with Fabry disease. It may help doctors understand heart rhythm changes better so future care can be more tailored and safer.
Paris, ParisAges 18 years+ - NCT04442789Recruiting
Study of lasting effects after COVID-19 hospitalization
This study looks at what health problems remain after a person was hospitalized for COVID-19. It may help doctors understand these long-lasting effects and how to care for people afterward.
GiessenAges 18 years+ - NCT04443439Recruiting
MRI study to assess stroke risk from carotid narrowing
This study looks at how dangerous carotid artery narrowing (blood vessels in the neck that supply the brain) might be, using CT and MRI information. It may help doctors better judge stroke risk for people with mild, moderate, or severe narrowing.
Xi'anAges Any age - NCT04467671RecruitingPhase 2
Tested new blood vessel graft for a heart surgery
This trial studies whether a newer “tissue-engineered” blood vessel graft is safe and works well in children who need a specific heart surgery connection outside the heart. It may help by offering a new type of graft, but your team will screen for size and medical factors first.
Columbus, OhioAges Any age - NCT04478734RecruitingPhase 2
Thiamine plus biotin for Huntington’s disease symptoms
This Phase 2 study tests whether taking thiamine and biotin together can improve symptoms in people with Huntington’s disease. It looks especially at people with confirmed genetic Huntington’s disease and certain types of movement and/or mood symptoms.
San Sebastián, San SebastianAges 18 years+ - NCT04490720Recruiting
Buckwheat husk extract for heart risk factors
This trial studies whether buckwheat husk extract can improve certain heart-related measurements in people with mildly high blood pressure. It may help lower cardiovascular risk factors by affecting things like blood pressure.
TaipeiAges 20–65 - NCT04496973Recruiting
Parkinson’s disease research registry for adults
This registry asks people with Parkinson’s disease to join a research program at the University of Delaware. Being in the registry may help you get invited to investigator-led studies that could improve understanding or treatment of Parkinson’s.
Newark, DelawareAges 21–100 - NCT04504136Recruiting
Study how gut lining heals in inflammatory bowel disease
This study looks at how the lining of the colon heals in people with inflammatory bowel disease (ulcerative colitis or Crohn’s disease). It may help researchers understand whether anti-TNF treatment improves healing, especially when people have limited prior response or are starting biologic therapy.
Lexington, KentuckyAges 18–90 - NCT04528446Recruiting
Study bone strength in people with kidney filtering disorders
This study looks at how kidney filtering problems (glomerular disorders) may affect bone quality and strength. It may help researchers understand who is at higher risk for weak bones and fractures and why.
New York, New YorkAges 5–55 - NCT04528082RecruitingPhase 3
Apremilast for children with frequent mouth ulcers from Behçet’s disease
This study tests apremilast to help reduce active, recurring mouth (oral) ulcers in children with Behçet’s disease. It may help if your child has had repeated mouth ulcers despite at least one non-biologic treatment.
BronAges 2–17 - NCT04532346RecruitingEarly Phase 1
Hydroxychloroquine for genetic lung disease in children
This early-phase trial studies whether hydroxychloroquine can help children with certain genetic causes of interstitial lung disease (lung scarring/inflammation). It is designed for kids who are currently stable and have not recently taken hydroxychloroquine.
Shanghai, Shanghai MunicipalityAges 1 month–18 years - NCT04544527Recruiting
Study risks for heart disease in older people with diabetes
This study follows older adults with diabetes to understand what factors may raise the risk of heart disease. It may help doctors spot risks earlier in people like you.
Suzhou, JiangsuAges 65–100 - NCT04556188Recruiting
Study to improve cardiac surgery services for rheumatic heart disease
This study looks at whether building a better, sustainable cardiac surgery service can reduce the burden of rheumatic heart disease. It focuses on patients who need cardiac surgery at a specific hospital during a training and research program.
Addis AbabaAges 14 years+ - NCT04567030Recruiting
AI tool to help improve gum treatment outcomes
This trial tests whether an artificial intelligence (AI) system can help plan and improve results of gum (periodontal) treatment. You may be a good match if you have diagnosed periodontal disease and enough healthy teeth.
Kaohsiung CityAges 35–65 - NCT04567121Recruiting
Online lifestyle program to lower common health risk factors
This trial tests an internet-based coaching program to help people with lifestyle-related risk factors (like high blood pressure, diabetes risk, smoking, or fatty liver) improve their health. It may help you better manage risk factors that can lead to heart and other long-term diseases.
Beijing, Beijing MunicipalityAges 25 years+ - NCT04570085RecruitingPhase 3
Caffeine treatment to improve thinking in Alzheimer’s disease
This trial tests whether changing caffeine intake can improve thinking and brain function in people with Alzheimer’s disease. You may qualify if you can follow a low-caffeine diet and have stable Alzheimer’s treatment and sleep/heart conditions.
AmiensAges 50 years+ - NCT04573062Recruiting
Study how people recover from COVID over time
This study follows adults who recently recovered from COVID-19 to better understand what happens during recovery and afterward. It may help researchers identify who is at risk for longer-lasting symptoms (often called “PASC”) and what changes over time.
Bethesda, MarylandAges 18–100 - NCT04571658Recruiting
NEPTUNE Match study linking you to possible kidney research trials
This study is an add-on process that uses information from the NEPTUNE kidney study to see whether you might be able to join other kidney research trials. It may help connect eligible people with appropriate new treatment studies when they become available.
Atlanta, GeorgiaAges 1–80 - NCT04573283Recruiting
Study of fatty liver in adults in China
This study follows adults with fatty liver to learn more about how it progresses and what patterns are common. It may help improve future ways of identifying and monitoring fatty liver.
Guangzhou, GuangdongAges 18–80 - NCT04575337Recruiting
Biomarker study to help detect Alzheimer’s early
This study looks for brain/biological “signals” (biomarkers) that may identify Alzheimer’s disease earlier, including stages before clear symptoms. You may be followed for about 5 years, with repeated memory and thinking testing to see how these signs relate to future diagnosis.
Beijing, Beijing MunicipalityAges 18 years+ - NCT04575883Recruiting
Bike interval training for teens with repaired heart defects
This study tests a structured “interval” bike exercise program to see if it’s safe and helpful for teens with certain repaired congenital heart conditions. It may help improve fitness while closely monitoring heart symptoms during training.
Edmonton, AlbertaAges 10–18 - NCT04576130Recruiting
ICD study after cardiac arrest from an abnormal heart rhythm
This study looks at an implantable defibrillator (ICD) strategy in people who survived a cardiac arrest caused by an abnormal rhythm (ventricular fibrillation or ventricular tachycardia). It aims to reduce the risk of another dangerous rhythm after the blocked heart arteries are fully treated.
CopenhagenAges 18 years+ - NCT04580225Recruiting
Tested partial wrist fusion with or without bone removal
This study compares two surgical options for certain types of advanced wrist arthritis—one with partial wrist fusion alone, and one with partial wrist fusion plus removal of a small wrist bone. It may help find which approach works better for pain and function after surgery.
Calgary, AlbertaAges 18–75
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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.