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 10,559 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT01776398Recruiting
Donating breath, blood, and urine samples for lung research
This study collects airway samples (usually during a bronchoscopy), plus blood and/or urine, to help researchers study lung conditions. It may help advance understanding of lung disease and related biology, but it is not a treatment trial.
New York, New YorkAges 18 years+ - NCT06027333Recruiting
Self-care and outlook in lung scarring
This study looks at how confident and positive people with fibrotic interstitial lung disease feel about managing their condition. It aims to improve support during rehabilitation.
Bern, Canton of BernAges 18 years+ - NCT06004349Recruiting
Genetic study of autoinflammatory diseases
This study looks for genes linked to autoinflammatory diseases like VEXAS syndrome. You or your family member can join by mailing in a blood or saliva sample to help researchers better understand these conditions.
New York, New YorkAges 1 month+ - NCT06023030Recruiting
Observing how upadacitinib works for Crohn's disease in Japan
This study is for people with moderate to severe Crohn's disease who are starting a medication called upadacitinib. Researchers will watch how the disease changes over time and check for any side effects. It's an observational study, meaning you'll keep getting your regular treatment.
Anjo-shi, Aichi-kenAges 15 years+ - NCT05995353RecruitingPhase 3
Risankizumab for children with moderate to severe Crohn's
This study tests a new medicine called risankizumab for children with moderate to severe Crohn's disease. It is given as an IV infusion or a shot under the skin to see if it can reduce inflammation and improve symptoms.
Phoenix, ArizonaAges 2–17 - NCT06001450Recruiting
Plastics and toxins in pregnant women and families
This study looks at how plastics and toxins in the environment might affect inflammation in the gut, especially in pregnant women with Crohn's disease and their families. It will help doctors understand if these chemicals play a role in bowel inflammation during pregnancy.
New York, New YorkAges 18 years+ - NCT05979870Enrolling by invitation
AI-enhanced heart MRI for valve disease
This study uses artificial intelligence to improve MRI scans for people with aortic or pulmonary valve disease who are scheduled for valve surgery or a non-surgical valve procedure. It aims to help doctors better assess heart function before treatment.
Gothenburg, GothenburgAges 1 week–18 years - NCT05992532Recruiting
Study of rare enzyme disorders in monoclonal gammopathy or myeloma
This study looks for two rare inherited disorders—Gaucher disease and acid sphingomyelinase deficiency (ASMD)—in people who already have a blood condition like monoclonal gammopathy (abnormal protein) or multiple myeloma. If you have an enlarged spleen or low platelets, you may be eligible to help researchers understand if these rare diseases are more common in this group.
Vitoria-Gasteiz, AlavaAges 18–99 - NCT03717844Recruiting
Registry for adults with plasma cell disorders
This study is a registry that collects information about adults with plasma cell disorders (conditions involving abnormal antibody-producing cells). It may help researchers understand these diseases better and improve future care by tracking patients over time.
Chapel Hill, North CarolinaAges 18 years+ - NCT05835973Recruiting
Study of sleep changes in people with inflammatory bowel disease
This study looks at how sleep patterns change in adults with inflammatory bowel disease (IBD) who are currently in remission. It may help researchers understand sleep issues in IBD and identify ways to improve care during symptom-free periods.
Clermont-FerrandAges 18–65 - NCT05927454Recruiting
RaDiCo Acostill study for inflammatory fevers and arthritis
This is a long-term study that collects health information and lab samples from people who have certain diagnoses of recurring (coming and going) inflammatory fevers and related joint or immune conditions. It may help researchers better understand these diseases and how they work over time.
Paris, Île-de-France RegionAges Any age - NCT05932615Enrolling by invitation
Testing a new transcatheter valve for aortic valve narrowing
This trial studies how safe and effective the NAVITOR valve is for treating narrowed aortic valves placed through a catheter (no open-heart surgery). It may be an option if you’re at intermediate-to-low surgical risk and meet heart ultrasound/CT measurements.
Birmingham, AlabamaAges 18 years+ - NCT05934188Recruiting
Study how gut signals relate to brain aging and diseases
This study looks at how the gut may influence the brain in normal aging and conditions like Alzheimer’s, Parkinson’s, and multiple sclerosis. It may help researchers understand new ways to measure or treat these brain changes over time.
Venice-Lido, VeniceAges 20–90 - NCT05935605Recruiting
Study pulmonary hypertension in heart failure and valve disease
This study looks at pulmonary hypertension—high blood pressure in the lung arteries—in people with certain heart conditions (heart failure with preserved or reduced pumping function, or significant valve disease). It may help doctors better understand how lung blood pressure changes in these heart problems and guide care.
Rochester, MinnesotaAges 18 years+ - NCT05881447Recruiting
Study kidney disease patterns in people in Tanzania
This study looks at how common chronic kidney disease is, how it develops over time, and what risk factors are linked to it. It may help improve how kidney disease is recognized and managed in your community.
Bagamoyo, Coast RegionAges 18–99 - NCT05882344Enrolling by invitation
Deep brain stimulation for early Alzheimer’s memory problems
This trial tests whether a targeted deep brain stimulation treatment can help people with early Alzheimer’s disease symptoms and memory loss. It also involves brain imaging and a surgery/anesthesia procedure to place the stimulator.
Nashville, TennesseeAges 60–80 - NCT05854563Recruiting
Study using collected cough samples to learn about lung disease
This trial looks at “cough capture” samples to better understand what is happening in the lungs. You might be eligible if you’re having a bronchoscopy for medical reasons and don’t already have lung cancer.
The Bronx, New YorkAges 21 years+ - NCT05870007Enrolling by invitationPhase 2
Atorvastatin and alkalizing treatment for autosomal dominant PKD
This Phase 2 study tests whether atorvastatin plus an “alkalizing” treatment (sodium bicarbonate) can slow or improve disease effects in people with autosomal dominant polycystic kidney disease (ADPKD). It specifically targets metabolic acidosis (when the body becomes “too acidic”), which may worsen kidney health.
New Taipei CityAges 18 years+ - NCT05819385Recruiting
Study of lung scarring in immune diseases
This is an observational (non-treatment) study that collects information about how interstitial lung disease (lung scarring) happens in people with certain autoimmune or immune-related conditions. It uses patient interviews or existing medical records to better understand the pattern and causes, which may help future care.
Mexico CityAges 18 years+ - NCT05829889Recruiting
FFR test versus angiogram to guide left main heart treatment
This trial compares two ways to decide how to treat a narrowed “left main” coronary artery: a pressure-based test (FFR) versus standard X-ray imaging (angiography). It aims to see which approach better helps choose safe, appropriate treatment using a stent when appropriate.
Hong KongAges 20 years+ - NCT04735458Recruiting
Brain network study for Parkinson’s or essential tremor
This study looks at how “inhibitory control” brain networks work in people with Parkinson’s disease or essential tremor. If you are eligible for surgery and can do the study tasks, your results may help researchers better understand movement disorders and guide future treatments.
Birmingham, AlabamaAges 18 years+ - NCT05811364Recruiting
Stent versus bare-metal treatment for blocked leg arteries
This study compares a new balloon-expandable stent to standard bare-metal stenting to treat complex blockages in the iliac arteries (main blood vessels to the legs). It may help people with symptoms like leg pain with walking, pain at rest, or minor tissue injury by improving blood flow and reducing repeat procedures.
Little Rock, ArkansasAges 18 years+ - NCT05775354Enrolling by invitation
Early heart disease check-in in adults age 50–80
This study aims to improve early detection of heart and blood vessel problems by adding further research after routine care. It may help you by making sure your heart risk is monitored more closely, if you’re eligible and agree to the additional steps.
UtrechtAges 50–80 - NCT05746039RecruitingPhase 1/Phase 2
Testing semaglutide for advanced lung disease
This study checks whether semaglutide is safe and feasible for people with advanced lung diseases and higher body weight. It may help by testing a structured treatment approach, but it includes several health and safety limits.
Philadelphia, PennsylvaniaAges 18–80
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,559 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.