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
- NCT04528979Recruiting
Tests a bioceramic filling material for root-canal treatment outcomes
This study looks at how well a bioceramic sealing material works for tooth root-canal treatment, including cases where previous treatment did not work. If you have certain types of tooth nerve inflammation or infection, you may be eligible to help compare outcomes and improve care.
Sant Cugat del Vallès, BarcelonaAges 18–75 - NCT04531696Recruiting
Post-death breast tissue donation study for cancer research
This trial invites adults with certain breast cancer conditions to donate tissue after death. Researchers hope the donated samples will help better understand cancer and improve future treatments.
LeuvenAges 18 years+ - NCT04536220Recruiting
Blood-based tests to help diagnose pancreatic cancer
This study uses blood taken from a vein to build and check diagnostic models for pancreatic cancer. It may help doctors identify pancreatic cancer more accurately in people who have a suspected mass on imaging.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT04543461Recruiting
Lung health study for young adults in the U.S.
This study follows young adults to learn about lung health and risk factors. It may help researchers better understand how breathing symptoms and exposures affect future lung outcomes.
Birmingham, AlabamaAges 25–35 - NCT04547673Recruiting
Test an endoscopy camera tool to help diagnose throat cancer
This study checks an “intelligent” camera used during a nose-and-throat exam to improve how nasopharyngeal cancer is diagnosed. If you are eligible, your care team will compare how well the tool identifies the condition.
Guangzhou, GuangdongAges 18 years+ - NCT04552275RecruitingPhase 1
Biomarker study during valve replacement for older adults
This Phase 1 study looks at changes in the body’s “biomarkers” (measurable signs in blood/medical tests) in older people who are getting a specific type of valve replacement. Results may help doctors better monitor or understand outcomes after this valve procedure.
Boston, MassachusettsAges 65 years+ - NCT04551482RecruitingPhase 2
Oxytocin to help teens lose weight
This study tests whether the hormone oxytocin can help adolescents with obesity lose weight. You may be asked to stay on your usual diet and routines during the 18-week study to see how well the treatment works.
Boston, MassachusettsAges 10–18 - NCT04560322RecruitingPhase 2
Test of venetoclax and obinutuzumab with or without acalabrutinib
This Phase 2 study tests venetoclax plus obinutuzumab, and whether adding acalabrutinib (or not) improves outcomes for people with relapsed or refractory CLL/SLL. It aims to see which combination works best and is safe for patients whose leukemia has returned or not responded.
Boston, MassachusettsAges 18 years+ - NCT04560803Recruiting
Skin grafts to help radiation wounds heal faster
This study tests a small skin graft approach to help wounds caused by prior radiation heal better. If you have a radiation-related skin wound that usually heals slowly on its own, this may speed healing and improve comfort.
Boston, MassachusettsAges 18–80 - NCT04565795Recruiting
Temporary dissolvable ureter stent after uncomplicated ureteroscopy
This trial studies a temporary stent that is designed to dissolve in the ureter after a straightforward ureteroscopy to remove a kidney/ureter stone. The goal is to check safety and how well the device performs, and whether it can replace longer-lasting stents for some people.
Phoenix, ArizonaAges 21–80 - NCT04569591Recruiting
Using DDAVP with PET scans to find pituitary tumor source
This study tests whether giving DDAVP before a PET scan can help doctors better locate the pituitary problem in people with Cushing disease. It may help confirm where the ACTH-producing tumor is so surgery can be planned more accurately.
Bethesda, MarylandAges 8–99 - NCT04579120Recruiting
Brain scan study in healthy aging or early Alzheimer’s
This study uses brain imaging to understand changes in the brain during normal aging and early Alzheimer’s disease (AD). It may help researchers spot early brain changes and evaluate how well imaging measures those changes.
St Louis, MissouriAges 18 years+ - NCT04578301Recruiting
Predicting who develops serious liver worsening after surgery
This study looks at your liver health before and after surgery to predict the risk of “acute-on-chronic liver failure,” which means a sudden worsening of liver function on top of an existing liver condition. If you qualify, your doctors may use study data to better identify who needs closer monitoring after surgery.
BonnAges 18 years+ - NCT04580420RecruitingPhase 2
Study of an oxalate-lowering medicine for PH1 and kidney failure
This Phase 2 study tests a medicine called DCR-PHXC to lower body oxalate levels in people with PH1 who have advanced kidney failure. By lowering oxalate, the treatment may reduce harm from oxalate buildup and help researchers understand safety and effectiveness.
San Francisco, CaliforniaAges Any age - NCT04582903Recruiting
Send-in sample collection study for immune response to respiratory viruses
This study collects sent-in samples to better understand how your immune system responds during a COVID-19–like illness and after you recover. It may help researchers learn why some people get sick and others stay uninfected, and how immune protection works over time.
Rockville, MarylandAges 1 day–99 years - NCT04587856Recruiting
Study why blood cancer returns after donor stem cell transplant
This study looks at why a bone marrow disorder (MDS) can come back after a donor stem cell transplant. It may help researchers understand relapse, which could improve future care for people getting transplants.
BariAges 18 years+ - NCT04588077RecruitingPhase 4
Two-dose vs three-dose hepatitis B vaccine for cirrhosis
This study compares giving the hepatitis B vaccine in 2 doses versus 3 doses for people with cirrhosis who do not yet have protection against hepatitis B. It may help your care team choose the schedule most likely to build lasting immunity.
Baltimore, MarylandAges 18 years+ - NCT04592640RecruitingEarly Phase 1
Amniotic stem cell treatment for calciphylaxis
This early-phase study tests a stem cell therapy made from amniotic (placenta) tissue for people with calciphylaxis. If you qualify, the goal is to see whether this treatment is safe and potentially helpful for this rare, painful condition.
Nanjing, JiangsuAges 18–75 - NCT04599621Recruiting
Testing treatment for heart pain with anxiety or depression
This trial looks at people who have coronary artery disease and unstable or certain stable chest-pain symptoms, especially when anxiety or depressive symptoms are also present. The goal is to see how the study approach helps heart symptoms when mental health symptoms occur at the same time.
SamarkandAges Any age - NCT04602325Recruiting
Blood and brain injury biomarker study for inherited metabolic disorders
This trial studies blood and other measurable signs (biomarkers) that may reflect brain injury after certain inherited metabolic conditions. Results may help doctors better detect and understand brain effects from these illnesses, especially episodes that affect the brain.
Washington D.C., District of ColumbiaAges 7–18 - NCT04604522Recruiting
Study airway brushing in people with bronchiolitis obliterans
This study collects tiny airway samples during a planned bronchoscopy to better understand bronchiolitis obliterans (a long-term lung complication after transplant). Your samples may help researchers learn how the disease starts and changes over time.
Houston, TexasAges Any age - NCT04604782RecruitingPhase 1/Phase 2
Regadenoson study in children to test safety and dosing
This trial tests how safe regadenoson is in children and how the body handles it after dosing. It also uses a heart “stress test” with MRI (CMR) when doctors feel it’s needed.
ParisAges 4 weeks–18 years - NCT04606459Recruiting
Device trial for hard-to-treat heart chest pain from small vessels
This trial tests whether a small pressure-reducing device placed in a heart vein (the coronary sinus) can reduce symptoms in people with ongoing chest pain from tiny blood vessel problems. It is for angina that has not improved despite standard heart medicines, and only if special heart tests show reversible reduced blood flow.
Mainz, Rhineland-PalatinateAges 18–85 - NCT04606732Recruiting
Tracking heart risk changes after COVID-19 hospitalization
This study looks at how COVID-19 affects heart health over time in people who were hospitalized. Your results may help doctors predict prognosis and understand who is at higher heart risk after recovery.
BolognaAges 18 years+
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,808 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.