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
- NCT02015013RecruitingPhase 2
Blood cell collection study for immune system disorders
This study collects blood-forming cells from people with low CD4 counts and healthy volunteers to learn how the immune system works. It may help researchers better understand and treat conditions like idiopathic CD4 lymphocytopenia.
Bethesda, MarylandAges 18–65 - NCT02119611Recruiting
Deep brain stimulation for Parkinson’s, dystonia, or tremor
This study tests deep brain stimulation (DBS), a therapy that sends electrical signals to the brain, for movement problems like Parkinson’s disease, dystonia, and essential tremor. It may help people whose symptoms are not controlled enough with medications, or who already have a DBS device and need ongoing management.
Bethesda, MarylandAges 18–100 - NCT01306019RecruitingPhase 1/Phase 2
Gene therapy for children with severe immune deficiency (XSCID)
This trial tests a one-time gene therapy approach to help children with X-linked SCID (a serious inherited immune disorder) make better immune cells. It’s for people who don’t have a fully matched sibling donor and need long-term follow-up after treatment.
Bethesda, MarylandAges 2–50 - NCT02147405Recruiting
PET scans and lymph node checks for HIV immune rebound
This study looks at people with HIV who either have not started HIV medicines yet or who recently started/changed them and may develop immune rebound (IRIS). It uses blood tests and optional PET/CT scans and lymph node biopsies to understand what’s happening in the body and to guide care.
Bethesda, MarylandAges 18–100 - NCT02154035Recruiting
Measuring HIV reservoir in Ugandans with suppressed virus
This study in Uganda looks at the HIV 'reservoir' (where the virus hides in the body) in people whose HIV is already well-controlled with medications. It involves blood draws and genetic testing to learn more about the virus.
KalisizoAges 18–49 - NCT01730092Recruiting
Study of blood and imaging biomarkers in pulmonary artery hypertension
This study tracks natural changes in “biomarkers” (measurable signals in blood) and imaging findings in people with pulmonary arterial hypertension (PAH) or suspected PAH. It also includes healthy people for comparison, helping researchers understand what these signals mean over time.
Bethesda, MarylandAges 18–100 - NCT01621594Recruiting
Testing new radiation methods for heart CT images
This trial studies newer ways to take heart and blood vessel CT scans while using radiation more carefully. It may help improve image quality for people needing coronary CT angiography.
Bethesda, MarylandAges 18–100 - NCT01581580Recruiting
Deep brain stimulation surgery for movement disorders
This study looks at whether deep brain stimulation surgery can help people with certain movement problems, chosen by a specialized team. You may be considered if medicines (or other treatments) aren’t controlling your symptoms well enough or if the condition causes major disability.
Bethesda, MarylandAges 18–99 - NCT01780168Recruiting
Study of metabolism, infection, and immunity in mitochondrial disease
This study looks at how metabolism, infections, and the immune system work together in people with mitochondrial disease. It aims to learn more about the condition and may help guide future treatments.
Bethesda, MarylandAges 4 weeks–115 years - NCT01520844Recruiting
HIV cohort study comparing people on and off treatment
This study follows adults with HIV over time to compare different groups based on how stable their virus levels are. It may help researchers understand who can safely interrupt treatment and who should stay on it, and how immune health changes.
Le Kremlin-BicêtreAges 18–85 - NCT02071134Recruiting
Registry study for Vercise deep brain stimulation patients
This study keeps a record of people who receive the Vercise deep brain stimulation system. It helps doctors learn how the treatment is used in real-world care and how patients do over time.
Aliso Viejo, CaliforniaAges 18 years+ - NCT01524276Recruiting
Registry to track outcomes of Medtronic medical devices
This is a follow-up registry that collects information from people who have (or will receive) an eligible Medtronic device. It helps the company and doctors better understand how the device works in real-world use.
Birmingham, AlabamaAges Any age - NCT01644903Recruiting
Checking biomarkers after a liver transplant
This study follows people who are getting a liver transplant (including repeat transplants) to monitor changes in their body using test results. It may help doctors understand how patients are doing after transplant and improve care over time.
Chicago, IllinoisAges 18 years+ - NCT01366404Recruiting
FFR-guided heart procedure study for coronary artery narrowing
This study follows people who have narrowed heart arteries and have a pressure test (FFR) to guide treatment. It may help doctors understand the course of disease when using FFR and choosing a minimally invasive approach.
AnyangAges 35 years+ - NCT02026388Recruiting
Kidney stone DNA and tissue sample biobank study
This study collects and stores donated samples (like blood, urine, and tissue) from people with certain rare inherited kidney stone conditions. The goal is to build a resource for future research that could help improve diagnosis and treatment.
Rochester, MinnesotaAges Any age - NCT01453127Enrolling by invitationPhase 4
DaTscan scan for aging and movement brain conditions
This trial uses a special brain scan called DaTscan to study how certain brain conditions change with aging and over time. It may help researchers better understand movement and other neurodegenerative conditions and who may benefit from future treatments.
Rochester, MinnesotaAges 40–90 - NCT02132741Recruiting
Eye imaging study in people with kidney disease
This study uses a painless eye scan to learn more about how kidney disease may be linked to eye changes. It may help improve understanding and future care for people with chronic kidney disease and/or high blood pressure.
Edinburgh, MidlothianAges 18–80 - NCT01696721Recruiting
Pediatric radiation therapy registry for children under 22
This study is a registry that collects information from children and teens who receive radiation therapy at participating hospitals. It helps researchers learn how radiation is used in pediatrics and may improve future care.
Palo Alto, CaliforniaAges Up to 21 years - NCT01354002Recruiting
Tissue banking for research at St. Jude
This study collects, stores, and shares human tissue samples for future research at St. Jude. You or your family may be eligible if your institution has approved this process through their ethics board (IRB) and you (or a study leader) gave consent for tissue banking.
Huntsville, AlabamaAges Any age - NCT01668186Recruiting
Study of how peroxisome disorders change over time
This study follows people with peroxisome biogenesis disorders (PBD) or closely related enzyme/protein defects to learn how symptoms and health changes over time. It may help researchers better understand the condition and plan future treatments.
Montreal, QuebecAges Any age - NCT01517425Enrolling by invitation
Using blood stem cells to study heart disease traits
This study uses your blood to create special lab cells (induced pluripotent stem cells) to better understand heart-related differences between people with coronary artery disease and generally healthy older adults. It may help researchers learn what biological traits are linked to heart risk and how those traits work.
La Jolla, CaliforniaAges 18 years+ - NCT02013284Enrolling by invitation
Stool test to see if gut microbes predict heart risk
This study looks at your gut bacteria (from a stool sample) to see whether they can help predict heart risk in people being checked for blocked heart arteries. Your results may help researchers understand who is at higher risk and why.
Rochester, MinnesotaAges 18 years+ - NCT01659203RecruitingPhase 1/Phase 2
Proton or photon radiation for retroperitoneal sarcoma
This trial tests two types of external beam radiation—protons or photons—in people with retroperitoneal (in the back of the abdomen) soft tissue sarcoma. It’s an early-phase study meant to see how well the radiation can control measurable tumors while tracking safety.
Chicago, IllinoisAges 18 years+ - NCT02098863Recruiting
Research program for people with sickle cell disease on hydroxyurea
This trial program studies sickle cell disease and how treatment works, especially for people who are already taking hydroxyurea at a stable, maximum tolerated dose. It may help researchers better understand treatment effects and side effects in real patients.
Peoria, IllinoisAges Any age
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,548 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.