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 10,813 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT01905826Recruiting
Study of GATA2 deficiency causes and health outcomes
This natural history study looks at how GATA2 deficiency (a genetic condition) affects health over time. It may help doctors better understand complications and plan future care, and it includes genetic testing and stored samples.
Bethesda, MarylandAges 2–100 - NCT00243776Recruiting
Study of heart tissue changes during certain heart surgeries
This study collects and analyzes small samples of heart tissue during specific heart operations in babies or children. The goal is to better understand how the heart develops after birth, which could improve future care.
Atlanta, GeorgiaAges Up to 20 years - NCT01011712Recruiting
Study immune causes of severe viral infections
This study looks at why some people have severe or unusual viral infections, even when they do not have a known immune problem. It collects blood and tissue samples to better understand possible inherited immune issues and may help future diagnosis and treatment.
Bethesda, MarylandAges 2–100 - NCT00081523Recruiting
Understanding How Sickle Cell Disease Develops Over Time
This research study follows people with sickle cell disease to learn how the condition affects their health over many years. By studying patients regularly, researchers hope to better understand the disease and improve care.
Washington D.C., District of ColumbiaAges 2–90 - NCT00001532Recruiting
How Genes Affect Lung Disease Development
This research study examines how genetic factors contribute to various lung diseases, including alpha-1 antitrypsin deficiency, cystic fibrosis, and chronic obstructive pulmonary disease. Researchers want to understand why some people develop lung disease and how genetics plays a role, which may help improve treatment in the future.
Bethesda, MarylandAges 2–90 - NCT00900419Recruiting
Check biomarkers during bronchoscopy in breathing and throat pre-cancer
This study looks at “biomarkers” (measurable signals in samples) taken during bronchoscopy or related procedures in people with severe airway pre-cancer or certain lung/throat cancers, and in healthy volunteers. The goal is to better understand what these biomarkers mean and how they might help with diagnosis, staging, or monitoring.
Aurora, ColoradoAges 21–90 - NCT01804686RecruitingPhase 3
Long-term ibrutinib follow-up with or without nivolumab
This study looks at how safe and effective ibrutinib is over the long term, either alone or together with nivolumab. You may join if you are already in an earlier ibrutinib study and your care team feels staying on ibrutinib is worth the risk.
Duarte, CaliforniaAges 18 years+ - NCT00026650Recruiting
Understanding Long-Term Effects After Radiation Therapy
This study follows patients who have received radiation therapy to learn about long-term health effects and how the disease progresses over time. By tracking your health over the years, researchers hope to better understand and help future patients manage side effects.
Bethesda, MarylandAges 18–120 - NCT00898235Recruiting
Collecting samples and health data for amyloidosis
This study collects blood and other samples, along with health information, from people who have—or might have—amyloidosis. It aims to improve understanding of the disease and support future treatments.
Boston, MassachusettsAges 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 - NCT01521741Recruiting
Breast cancer lymphedema screening to detect early swelling
This trial looks at whether scheduled measurements can spot early swelling (lymphedema) in people with breast cancer. It may help find problems sooner so treatment or prevention steps can start earlier.
Boston, MassachusettsAges 18 years+ - NCT00655096Recruiting
Eye disease study screening for participants and family controls
This trial is a general screening step for people who may have an eye (ocular) condition, or for family members of someone with an eye condition. The goal is to help match you to an eye research study by confirming your situation and whether you can safely participate.
Bethesda, MarylandAges 2–100 - NCT00039689Recruiting
Blood collection study for newly diagnosed HIV research
This research study collects blood cells from people recently diagnosed with HIV who haven't started HIV medicines yet. Researchers use these samples to understand how HIV affects the immune system and develop better treatments.
Bethesda, MarylandAges 18–120 - NCT00307281Recruiting
Emphysema and COPD patient registry with sample storage
This study enrolls people who have emphysema/COPD into a research registry and collects health information and biological samples. It may help researchers understand the disease better and improve future treatments.
Pittsburgh, PennsylvaniaAges 21 years+ - NCT00082108Recruiting
Muscle Disease and Family Health Registry
This is a registry study that collects health information from people with myotonic dystrophy (a genetic muscle disease that causes weakness and stiffness) or facioscapulohumeral muscular dystrophy (a genetic condition affecting shoulder and face muscles), as well as their unaffected family members. The information helps researchers better understand these conditions and track how they progress over time.
Rochester, New YorkAges Any age - NCT01137825Recruiting
Older patient cancer registry for a health check
This study is a registry that collects information from older adults who may be dealing with cancer. It includes a short health and function check to help doctors understand needs and guide care, even for people who turn out not to have cancer.
Boone, North CarolinaAges 65 years+ - NCT01532791Recruiting
Study of mitochondrial mutation m.3243A>G in families
This study looks at the natural course of a specific inherited mitochondrial DNA change (m.3243A>G) over time. It may help doctors better understand how this mutation affects health and outcomes, even if no treatment is given.
New York, New YorkAges 4 years+ - NCT01425892Recruiting
Study of how Sjogren’s disease starts and changes over time
This study follows people with Sjogren’s disease to understand how it develops and how symptoms naturally change over time. The goal is to improve understanding and future care rather than provide a new immediate treatment.
Bethesda, MarylandAges 16–100 - NCT01650311Recruiting
Study how serotonin signals work in inflammatory bowel disease
This study looks at how the body’s serotonin system behaves in people with Crohn’s disease or ulcerative colitis, compared with healthy people. It may help researchers understand disease biology and why symptoms can differ from person to person.
Hamilton, OntarioAges 19–85 - NCT00345930Recruiting
Study of liver injury after medicines or supplements
This study looks at people (including children over age 2) who develop liver injury that may be caused by a drug or a complementary/alternative medicine (CAM) product. It helps doctors better understand what causes the injury and how to evaluate it.
Los Angeles, CaliforniaAges 2 years+ - NCT01838148Recruiting
Tests heart signals to detect reduced blood flow during exercise
This study looks at specific blood-flow and heart-rhythm signals during an exercise test to find signs of reduced blood flow to the heart. It may help doctors spot heart problems sooner and decide who needs more care.
BaselAges 18 years+ - NCT02061787Recruiting
Exercise testing to assess outcomes in pulmonary hypertension
This trial studies how well a treadmill/breathing exercise test can measure health outcomes in people with certain types of pulmonary hypertension. It may help your care team judge your status and track changes over time.
BeijingAges 5–100 - NCT01375530Recruiting
Volunteers needed for future medical research testing
This trial is looking for adult volunteers who agree to have blood and/or tissue samples collected and stored for later studies. It may help researchers better understand the immune system and future treatments, although it is mainly a sample-storage study rather than a specific drug treatment.
Atlanta, GeorgiaAges 18–60 - NCT01258231Recruiting
Genetic test to predict risks after heart surgery
This study looks for genetic (DNA) clues that may help predict side effects or complications after heart surgery. If you join, your genome information may be used to understand who is at higher risk and why.
Boston, MassachusettsAges 20–90
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,813 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.