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 10,546 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05339048Enrolling by invitation
Study of adults from Colombia’s Caribbean coast
This study follows adults who were born or are from Colombia’s Caribbean coast. The goal is to learn about health patterns in this community, but you would not be able to join if you meet certain medical or disability-related criteria.
Cartagena, Departamento de BolívarAges 18–80 - NCT05295446Enrolling by invitation
GI symptom registry for adults with functional bowel issues
This study is a registry (a way to collect health information) for adults with certain long-term “functional” gastrointestinal (GI) problems. It may help doctors better understand these conditions and improve future treatments.
Boston, MassachusettsAges 18 years+ - NCT05139706Recruiting
Study immune side effects after cancer immunotherapy
This study looks at how immune-related side effects happen in people treated with certain cancer immunotherapies. It also includes some healthy volunteers and people who already have similar autoimmune conditions, to better understand and compare these reactions.
Montreal, QuebecAges 18–100 - NCT05048680Recruiting
Breathing low-oxygen training to support brain blood flow in seniors
This study tests whether brief “low-oxygen” conditioning can improve blood flow to the brain and overall cerebrovascular (brain blood vessel) health in older adults. It may help people who are generally less active, as long as they have no major medical or safety barriers for the training.
La Tronche, Auvergne-Rhône-AlpesAges 60–80 - NCT05048966Recruiting
Comparing two wellness support groups for brain injury and dementia
This study compares two group wellness programs for people with brain injuries or dementia and their caregivers. It aims to see which program helps improve well-being and quality of life for both the person with the condition and their support person.
East Hanover, New JerseyAges 18 years+ - NCT05011071Enrolling by invitation
Alberta BLOOM study for very premature newborns
This study follows babies born very early and their parents to learn about early health and development. It may help doctors better understand what babies need after a premature birth.
Calgary, AlbertaAges birth+ - NCT04444128Recruiting
Testing heart risk assessment using MRI T1 mapping
This study checks whether an MRI heart scan measure called “T1 mapping” can improve how doctors estimate heart disease risk in everyday people. You may join if you’re an adult and can have a contrast-enhanced heart MRI safely.
Frankfurt am Main, HesseAges 18 years+ - NCT04778761Recruiting
Video program to help with end-of-life care planning
This trial tests a video-based program that helps people with a life-limiting illness plan their future healthcare wishes. If you may benefit, it may make conversations about advance care planning easier and more structured.
Jersey City, New JerseyAges 21 years+ - NCT04735172Recruiting
Brain scan to compare Parkinson chemical signals in early patients
This study uses a special 7‑Tesla MRI brain scan to measure tiny chemical (metabolite) differences in specific deep brain areas. It compares newly diagnosed, early-stage Parkinson’s patients who are not on Parkinson medication with healthy volunteers.
Clermont-FerrandAges 18–75 - NCT04722835Recruiting
Study lung immune cells in people at risk for COPD
This study looks at different lung immune cell patterns and how they work in smokers who are not yet diagnosed with COPD or asthma. It may help researchers understand why some people are more likely to develop COPD, which could guide future prevention or early treatments.
San Francisco, CaliforniaAges 40–75 - NCT04505865Recruiting
Mindfulness program to reduce inflammation in heart disease
This trial studies whether a mindfulness (stress-reducing) program can lower “vascular inflammation” (inflammation in blood vessel walls) in people with stable coronary disease. It may help by improving stress and related inflammation markers while you stay on your usual heart medicines.
Boston, MassachusettsAges 45–65 - NCT04565704Enrolling by invitation
Imaging checks on biopsy samples during routine scopes
This study uses special optical imaging during routine upper or lower endoscopy to look at biopsy tissue and compare what the images show with standard lab microscope results. It may help improve how doctors spot abnormal tissue during procedures.
Boston, MassachusettsAges 18 years+ - NCT04441151Recruiting
Pulmonary rehab for adults on high-flow oxygen therapy
This trial tests whether pulmonary rehabilitation (supervised breathing and activity training) improves outcomes for adults who need high-flow oxygen. You may be eligible if your breathing and heart/vital signs are stable and your oxygen level is above a certain threshold.
Beijing, Beijing MunicipalityAges 18–100 - NCT04286308Recruiting
Testing brain-speech recordings during DBS for movement disorders
This study looks at how brain and speech networks work while people with Parkinson’s disease, essential tremor, or dystonia are getting deep brain stimulation (DBS). It may help doctors better understand and possibly improve speech outcomes for people receiving DBS.
Boston, MassachusettsAges 18–85 - NCT04119024RecruitingPhase 1
Gene-edited immune cells for advanced melanoma or solid tumors
This Phase 1 study tests a gene-modified immune cell treatment for advanced cancers that don’t have standard curative options. It may help by attacking cancer cells that show a specific marker called IL13Rα2 after patients receive “conditioning” chemotherapy to prepare the immune system.
Duarte, CaliforniaAges 18–75 - NCT03835767RecruitingPhase 2
Predicting food allergy from blood IgE levels in eczema patients
This study looks for blood test patterns that may predict whether a child with eczema (atopic dermatitis) is likely to have a food allergy. If you join, you may do supervised oral food challenges with a placebo and the suspected foods to see what triggers symptoms.
Bethesda, MarylandAges 3–21 - NCT03773159Recruiting
Testing a blood clot test using whole blood flow
This trial tests a new lab device that measures how well your body forms primary blood clots while blood is kept in flowing conditions. It may help doctors better assess bleeding or clotting tendencies and guide future care.
BesançonAges 18 years+ - NCT03617237Recruiting
Radiation patient registry for cancer and non-cancer cases
This study keeps records to understand outcomes for people who had radiation treatment (or were evaluated for it) since 2000. It may help doctors compare results for different conditions and treatment approaches, including cancer and non-cancer problems.
Dallas, TexasAges 18–99 - NCT03689595Enrolling by invitation
PROMISE study: Predicting myeloma risk in high-risk groups
This study uses a blood test to find early signs of myeloma in people at higher risk, such as those with a family history or African ancestry. It aims to predict who might develop myeloma before symptoms appear.
Boston, MassachusettsAges 30 years+ - NCT03425526RecruitingPhase 1
Donor T-cell treatment for adenovirus illness in immune-weakened people
This early-phase study tests donor immune cells (T cells) to treat people who have adenovirus infection or adenovirus-related disease but have a weakened immune system. It may help your body fight the virus, especially in cases where other treatments may not be enough.
Houston, TexasAges Any age - NCT03326921RecruitingPhase 1
T cell treatment for leukemia after a bone marrow transplant
This early-phase trial tests an immune “T cell” therapy made to recognize a specific leukemia target. It is for people whose acute leukemia has come back (relapsed) or did not fully respond after receiving a donor stem cell transplant.
Seattle, WashingtonAges Up to 80 years - NCT03308773Enrolling by invitation
Prevention program for people at risk of type 2 diabetes
This trial looks at a personalized prevention approach for people who are at risk of developing type 2 diabetes. It may help by targeting your specific health factors before diabetes starts.
Ages 18–100 - NCT03128996RecruitingPhase 1/Phase 2
Bone marrow transplant with lighter chemo for non-cancer illnesses
This early-phase study tests a safer “lighter” conditioning chemo plan before a bone marrow transplant for people with non-cancer blood and immune disorders. It aims to reduce transplant risk while using donor marrow that does not match perfectly in the HLA type.
New Haven, ConnecticutAges 1 day–21 years - NCT02743845Recruiting
Find genetic answers for rare, possibly inherited conditions
This trial looks for gene changes that may explain rare conditions, even when the diagnosis is not fully understood. It may help families who have a rare condition or who are related to someone with one.
Boston, MassachusettsAges Any age
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,546 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.