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 10,548 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03568630Recruiting
Blood tests to study early pancreatic cancer risk
This study looks at blood “markers” to find early signs or higher risk for pancreatic cancer. You may join if you have certain risk factors (like new diabetes, pancreatic cysts/pancreatitis, or a strong family history) and can come to Omaha for blood draws twice a year.
Omaha, NebraskaAges 19 years+ - NCT03692455Enrolling by invitation
Compare two weight-loss surgeries for reflux over 8 years
This study follows people for up to 8 years to see how two different weight-loss surgeries affect ongoing heartburn and acid reflux. You would join only if you were already enrolled in an earlier related study and can complete required follow-up visits and tests.
Passo Fundo, Rio Grande do SulAges 18–78 - NCT03635541Recruiting
Liver health changes in fatty liver disease
This study tracks how liver scarring (fibrosis) and fat buildup (steatosis) change over time in people with nonalcoholic fatty liver disease (NAFLD). It helps doctors understand risk factors so they can better predict and manage the disease.
Beijing, Beijing MunicipalityAges 18–70 - NCT03663777Recruiting
Hand strength training for women with poor leg blood flow
This trial tests whether guided handgrip (hand strength) exercises can improve health in post-menopausal women who have reduced blood flow to the legs. It may help your circulation and overall function, as long as you can safely do the training and keep your current medications during the study.
São Paulo, São PauloAges 45 years+ - NCT03587272RecruitingPhase 2
Sibling bone marrow transplant to reduce treatment side effects
This study tests a way to do a bone marrow (stem cell) transplant from an HLA-matched sibling in children with sickle cell disease, aiming to lower the risk of serious side effects. You may be considered if you have certain past sickle complications and your body can safely handle the transplant plan.
Washington D.C., District of ColumbiaAges 2–25 - NCT03653156Recruiting
Aging and brain study for mild memory loss and dementia
This study checks how age affects memory and thinking, and compares people with mild memory problems, Alzheimer’s disease types, vascular dementia, and healthy controls. You may help researchers understand brain changes using thinking tests, MRI scans, and blood or spinal fluid tests.
Hefei, AnhuiAges 18 years+ - NCT00710112Recruiting
Genetic risk study in very low birth-weight babies
This study looks at genetic differences to understand why some very low birth-weight babies develop certain health problems. It may help doctors predict risk and tailor care for these babies.
Milwaukee, WisconsinAges Any age - NCT03394365RecruitingPhase 3
Tabelecleucel for EBV-related lymphoma after transplant treatment failure
This trial tests tabelecleucel, an immune therapy, for people whose EBV-associated post-transplant lymphoproliferative disease (PTLD) did not respond to rituximab and/or chemotherapy. It may help your immune system better control EBV-driven lymphoma after a transplant.
Duarte, CaliforniaAges Any age - NCT03319446Enrolling by invitation
Sharing anonymous samples for a diagnostic test
This trial collects and stores anonymous samples from consenting adults. It helps researchers evaluate or improve diagnostic testing without using your personal identity.
Salt Lake City, UtahAges 18–99 - NCT03300830Recruiting
Testing tumors linked to viruses, HIV, and immune disorders
This study collects and analyzes tumor tissue to learn what drives certain cancers and growths linked to viruses, HIV, and immune system problems. Results may help researchers understand disease causes and point to better future treatments.
Bethesda, MarylandAges 18 years+ - NCT03429036Recruiting
Collecting head and neck tissue samples for research
This study collects tissue and fluid samples from people with head and neck disorders to help researchers learn more about these conditions. By donating leftover samples from your regular medical care, you can help advance research without extra procedures.
Washington D.C., District of ColumbiaAges 3–120 - NCT03395509Enrolling by invitation
Free screening program for diabetes and heart risks
This study looks at how well and how cost-effective a combined health screening is for diabetes and cardiovascular (heart and blood vessel) risks. You may be invited to attend screening around your 67th birthday.
ViborgAges 67–67 - NCT03478826Recruiting
Donate blood samples for a lung disease research biobank
This study builds a “biobank,” a storage of blood and related samples, from people with lung interstitial lung diseases or other lung scarring diseases. Your samples help researchers study these conditions and improve future care.
Rochester, MinnesotaAges 18 years+ - NCT03457493RecruitingPhase 1/Phase 2
TSPO brain scan study in Parkinson’s disease
This trial looks at brain inflammation in people with Parkinson’s using a special PET scan. The goal is to understand how brain immune activity may relate to Parkinson’s, and how the scan results change over time.
Birmingham, AlabamaAges 30 years+ - NCT03450603Recruiting
Predicting COPD flare-up risk in adults
This study looks at factors that can predict when chronic obstructive pulmonary disease (COPD) will flare up. It may help doctors identify people at higher risk sooner and tailor care to prevent flare-ups.
ShanghaiAges 40 years+ - NCT03353584Recruiting
Virtual reality for pain relief during sickle cell pain crises
This trial tests whether a virtual reality (VR) experience can help reduce pain during a sickle cell “vaso-occlusive crisis,” which is an episode of sudden, severe pain. It’s offered alongside the care team’s usual pain management to see if VR makes pain feel better.
Memphis, TennesseeAges 6–25 - NCT03297775Recruiting
Studying rheumatoid arthritis treatment risks for lung scarring
This trial is for people with rheumatoid arthritis (RA) who are at risk for developing interstitial lung disease, which is scarring in the lungs. It aims to better understand why this happens and how to help prevent or manage it.
Aurora, ColoradoAges 45–90 - NCT03399175Recruiting
Early immune-suppressing treatment for VKH eye disease
This trial studies giving immune-suppressing treatment early in Vogt-Koyanagi-Harada (VKH) disease to see if it improves outcomes. It may help people reduce ongoing eye inflammation if they qualify and can be followed for a longer time.
São Paulo, São PauloAges 10–70 - NCT03376165Recruiting
Study heart rhythm problems after heart surgery
This trial looks at heart rhythm issues (especially atrial fibrillation) that can happen after certain heart procedures. It may help doctors better predict, prevent, or manage these rhythm problems after surgery.
LilleAges 18 years+ - NCT03388476Enrolling by invitation
Breathing carbon dioxide measurement to detect lung high blood pressure
This trial tests whether measuring carbon dioxide you breathe out can help detect pulmonary hypertension earlier. It may help doctors spot this lung blood vessel condition sooner, especially around the time you get a heart test.
Giessen, HesseAges 18 years+ - NCT03378102RecruitingEarly Phase 1
AdV-targeted T cells for adenovirus after bone marrow transplant
This trial tests a custom immune cell treatment (T cells made to recognize adenovirus) for people whose adenovirus infection is not improving or who cannot tolerate standard antiviral medicines after a bone marrow transplant. It aims to help your body control the virus and prevent organ complications.
Cleveland, OhioAges 3 months+ - NCT03458195Recruiting
Crohn’s surgery follow-up for ileocecal resection patients
This study follows adults with Crohn’s disease who need surgery to remove the ileocecal area. It aims to better understand post-operative outcomes and what to expect after the operation.
LiègeAges 18–100 - NCT03334292Recruiting
Study of the natural course of Wilson disease
This study follows people who already have Wilson disease to understand how the condition changes over time. It may help researchers better predict future symptoms and improve care.
New Haven, ConnecticutAges Any age - NCT03503331RecruitingPhase 2
Alzheimer’s imaging add-on for research center patients
This study adds special brain scans (MRI and a PET scan) for people already enrolled in the UAB Alzheimer’s Disease Center research program. The scans are used to learn more about brain changes in Alzheimer’s, which may help researchers find better ways to measure and understand the disease.
Birmingham, AlabamaAges 50 years+
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,548 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.