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
- NCT02040714Enrolling by invitation
Study of current treatments for Perthes hip disease
This study follows children (and teens) with Legg-Calvé-Perthes disease to learn about how today’s treatments work in real life. It may help doctors choose the best next steps for your child’s hip health.
Birmingham, AlabamaAges 1–18 - NCT00567073Recruiting
Register pregnant people with Pompe disease for pregnancy data
This study keeps a special record of pregnancies in people with Pompe disease to learn more about pregnancy outcomes and newborn information. It does not test a drug by itself—it collects health information to improve future care.
Phoenix, ArizonaAges Any age - NCT00196742Recruiting
Fabry disease registry and pregnancy follow-up
This study collects health information from people with Fabry disease and specifically from pregnant people with Fabry disease. It helps researchers better understand the condition and how pregnancy affects health, using information you already experience in routine care.
Birmingham, AlabamaAges Any age - NCT01192048Recruiting
Study genetics in congenital heart disease
This study looks at how genes may contribute to congenital heart disease. It may help researchers better understand causes and risk in families like yours.
Columbus, OhioAges Any age - NCT00272883Recruiting
Study genes in congenital muscle weakness
This research study looks at genes and molecules to better understand congenital myopathies (birth-related muscle weakness). It may help explain the cause of symptoms and improve future diagnoses for you and your family.
Boston, MassachusettsAges Any age - NCT01171872Enrolling by invitation
Study blood and tissue gene signals in bowel inflammation
This study looks at gene activity (what your body’s genes are “doing”) in people with bowel inflammation during endoscopy or bowel surgery. It may help researchers understand inflammatory bowel disease and improve future diagnosis or treatments.
Baltimore, MarylandAges 7 years+ - NCT00904878Recruiting
Study of pregnancy outcomes for people with inflammatory bowel disease
This study looks at how pregnancy and newborn outcomes turn out for people with inflammatory bowel disease (IBD) who are pregnant and taking immune-suppressing medicines or biologic therapies. It may help doctors better understand risks and care for mothers and babies in similar situations.
San Francisco, CaliforniaAges 18–45 - NCT00327860Recruiting
Kidney disease in children study that follows patients over time
This is a long-term study that watches children and young adults with chronic kidney disease to understand how the illness changes and to improve care. You may be asked to complete regular visits and questionnaires, and your kidney function will be tracked over time.
Kansas City, MissouriAges 6 months–22 years - NCT00842283Recruiting
Study of how new blood vessels affect skin diseases
This study looks at how new blood vessel growth may be involved in skin conditions. It may help researchers learn whether blocking this process could become a future treatment, and you may contribute by having a skin biopsy.
Irvine, CaliforniaAges 16 years+ - NCT00983463Enrolling by invitation
Study of liver fats and proteins in fatty liver disease
This study measures different fats and proteins in the liver of people with fatty liver disease (often called NAFLD) who are having planned abdominal or weight-loss surgery. It may help doctors better understand what’s happening in the liver and improve future care.
Nashville, TennesseeAges 18–65 - NCT00260585Recruiting
Esophageal risk and tissue registry study
This study collects information and, if you already need blood tests or procedures, may take extra small tissue samples (biopsies) to better understand esophageal-related conditions. It may help researchers learn about risk and future management for people with certain esophagus or reflux-related diagnoses.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT00470327Recruiting
Study of how interstitial lung disease naturally changes
This study looks at how interstitial lung disease (lung scarring) typically progresses over time. It may help researchers understand what to expect and what changes to watch for.
Chicago, IllinoisAges 18 years+ - NCT00628199Enrolling by invitation
Skin sample study to create future cell therapies
This study collects skin cells from people with certain long-term conditions (or specific genetic disorders). Researchers use the cells to try to build new treatments for human disease and disability in the future.
Stanford, CaliforniaAges 1–75 - NCT01102556Recruiting
Pancreas disease registry for people at risk or with pancreatic cancer
This study collects health information and stored samples (biospecimens) to learn more about pancreatic diseases, including cancer and early warning changes. It may help researchers understand who is at higher risk and improve future testing and care.
New York, New YorkAges 18–85 - NCT00001281Recruiting
Understanding how HIV affects blood cells and body fluids
This research study examines how HIV works in the blood and body fluids of people with and without HIV. By studying blood samples, researchers hope to better understand HIV infection and develop better treatments.
Washington D.C., District of ColumbiaAges 18–120 - NCT00557726Recruiting
Evaluation and care for inflammatory or infectious illnesses
This trial helps doctors evaluate possible infection or inflammation and decide on the best management plan. You may be able to receive specialized care at the NIH if the study team thinks your situation fits.
Bethesda, MarylandAges 3–100 - NCT00001465Recruiting
Study of lymphangioleiomyomatosis (LAM) disease process
This study looks at the natural history and disease process of lymphangioleiomyomatosis (LAM), a rare lung disease that mostly affects women. It may help understand how LAM progresses and how it affects daily life, and may include exercise testing and other evaluations.
Bethesda, MarylandAges 16–100 - NCT00246857Recruiting
Screening study for inherited immune system conditions
This study screens people who may have an inherited immune system condition (like problems with immune cell growth or death) and their blood relatives. The goal is to understand the condition better by collecting blood samples for testing.
Bethesda, MarylandAges 1 month–100 years - NCT00047996Enrolling by invitation
Blood Donation Study for Blood Vessel Research
This study collects blood and urine samples from adults to help researchers understand diseases affecting blood vessels. Your donation helps scientists develop better treatments.
Bethesda, MarylandAges 18–100 - NCT00001215Enrolling by invitation
Understanding Genetic Lysosomal Storage Disorders
This study aims to understand genetic factors in lysosomal storage disorders—rare conditions where the body cannot break down certain substances. Researchers will collect information from patients with these disorders, their family members, and healthy volunteers to learn how these diseases develop and affect people over time.
Bethesda, MarylandAges 1 week–110 years - NCT00009243Recruiting
Understanding How Strokes Develop: A Research Study
This study follows people who have had or are at risk for stroke to understand what causes strokes and how they develop over time. By participating, you help researchers learn more about stroke prevention and treatment.
Washington D.C., District of ColumbiaAges 18–120 - NCT01200953Recruiting
Study care after contact with serious infectious germs
This study helps doctors manage people who may have been exposed to, infected with, or are recovering from dangerous infectious germs (including emerging outbreaks). It may help by setting safe evaluation and care steps after these high-risk exposures.
Bethesda, MarylandAges 3–99 - NCT00004847RecruitingPhase 1
Understanding and Diagnosing Pheochromocytoma and Paraganglioma
This study helps doctors better understand and diagnose pheochromocytoma and paraganglioma—rare tumors that release stress hormones and cause high blood pressure and other symptoms. Researchers will study your medical history, blood and urine tests, imaging scans, and genetic information to improve how these conditions are found and understood.
Bethesda, MarylandAges 3–120 - NCT00001159Recruiting
Thyroid disorder natural history study
This study observes people with various thyroid conditions, including overactive or underactive thyroid, to learn more about how these disorders develop and progress over time. It may help improve future diagnosis and treatment.
Bethesda, MarylandAges 6 months–98 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.