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
- NCT05947071RecruitingPhase 2
Higher-dose flu vaccine versus standard dose in child transplant patients
This trial compares a higher-dose flu vaccine to the standard dose in children who recently received a kidney, heart, and/or liver transplant. It aims to see which dose better protects children against influenza while checking for safety.
Stanford, CaliforniaAges 3–17 - NCT05957913Enrolling by invitationPhase 2
Testing antiviral drugs to control Epstein-Barr virus in MS
This Phase 2 study tests whether certain antiviral medicines can reduce Epstein-Barr virus (EBV) activity. If you have multiple sclerosis and evidence of EBV infection, the results may help clarify new ways to target EBV-related disease activity.
Boston, MassachusettsAges 18 years+ - NCT05972772RecruitingPhase 2/Phase 3
Test study drugs to clear rickettsia infections
This study tests antibiotics to help your body clear rickettsia-related illnesses like murine typhus or scrub typhus. It may help reduce symptoms and shorten how long you feel sick, based on how well the infection clears.
Vientiane, VientaineAges 18 years+ - NCT05943834Recruiting
Voice testing to detect early memory and mood changes
This trial studies whether automated analysis of your voice and speech can help detect early signs of Alzheimer’s disease and mood (affective) problems. It may help identify changes sooner, using voice and questionnaire information from people who are cognitively healthy to very mildly affected.
NiceAges 50–100 - NCT05948904Recruiting
Cryogenic catheters tested in donated lung tissue
This study tests a technique using a special cold (cryogenic) catheter to collect samples (biopsy) and destroy abnormal lung tissue (ablation) in lungs outside the body. It’s aimed at improving how pulmonary (lung) lesions could be diagnosed and treated in the future.
Montreal, QuebecAges 18 years+ - NCT05973539Recruiting
Study on how different foods change blood lipids
This study tests how your blood fat levels respond to changes in the types of nutrients you eat (carbohydrates, fats, and proteins). It may help researchers understand what dietary patterns best affect heart and metabolism-related blood measures.
OxfordAges 18–65 - NCT05953233Recruiting
Air study in inner-city schools using home nasal swabs
This study looks at air in inner-city schools and how it may affect children’s health. You may be asked to collect nasal swab samples at home and answer questions, especially if your child’s classroom is part of the study.
Boston, MassachusettsAges 6–90 - NCT05958706Recruiting
Testing how heart cells use fuel in heart failure
This study looks at how the heart uses energy fuel in people with heart failure, including those with type 2 diabetes. It may help researchers understand what’s going on inside the heart and how it could be treated in the future.
DüsseldorfAges 20–85 - NCT05970562RecruitingEarly Phase 1
Voice therapy plus biofeedback for vocal overuse problems
This early-phase study tests a mix of voice therapy and “biofeedback” (real-time feedback to help you change how you use your voice) for people with vocal overuse symptoms. It may help improve voice quality by targeting muscle tension and strain that happen when the voice is overworked.
Boston, MassachusettsAges 18–65 - NCT05949047Recruiting
Phone-based training for family caregivers of Alzheimer’s patients
This study tests a smartphone program that teaches skills to better manage emotions for people who provide unpaid care for someone with Alzheimer’s disease. It may help caregivers feel less overwhelmed and cope more effectively during daily stress.
Houston, TexasAges 18 years+ - NCT05963217RecruitingPhase 1
Study of a patient’s own CAR T cells for CD19 cancers
This Phase 1 study tests a personalized form of CAR T cell treatment made from your own immune cells to fight certain CD19-positive blood cancers that have returned or not responded to prior treatment. It mainly looks at safety and how well the treatment can work.
Toronto, OntarioAges 18 years+ - NCT05956379Enrolling by invitation
Exercise and monitoring study for chronic hepatitis B with fatty liver
This study follows adults with chronic hepatitis B who also have fatty liver and tests an exercise approach to see how it affects liver health. You may be followed over time and helped with an exercise plan if you qualify.
Taipei, Zhongzheng Dist.Ages 18–70 - NCT05954130Enrolling by invitation
Sexual health education for early pregnancy
This study tests whether a web-based course about sexual health during pregnancy can improve your sexual wellbeing. It focuses on people who are in their first trimester and have not already received similar sexual health education.
AdanaAges 18–35 - NCT05967390Enrolling by invitation
Personalized brain-mapping test using a scalp-to-brain scan
This trial looks at whether a personalized brain “map” using imaging and scalp measurements can be measured and evaluated in people who can safely attend the testing. It may help researchers better understand how brain structure relates to performance, using scan-based measurements and related procedures.
Hong KongAges 60–95 - NCT05943002Recruiting
Track symptoms and life effects using a phone survey
This study uses patient-reported questionnaires and health/economics/psychosocial questions for people with Friedreich ataxia. It aims to better understand how the condition affects daily life and what outcomes matter most, which can help future care and research.
InnsbruckAges 12 years+ - NCT05949567Recruiting
Testing whether body position changes bladder overactivity diagnosis
This study checks whether where you are positioned during a bladder test (urodynamic assessment) changes how bladder overactivity is diagnosed. It may help improve how doctors confirm the cause of overactive bladder symptoms in people with multiple sclerosis or Parkinson’s disease.
Paris, FranceAges 18 years+ - NCT05943535RecruitingPhase 3
Breathing treprostinil to slow progressive lung scarring
This Phase 3 trial tests whether inhaled treprostinil can slow progression of lung fibrosis (scarring) that keeps getting worse despite standard care. It also looks at safety, because inhaled medicine can cause side effects and needs careful monitoring.
Birmingham, AlabamaAges 18 years+ - NCT04679740Recruiting
Magnesium stent used in routine care registry study
This is a registry study that follows people who receive a resorbable magnesium scaffold (a temporary artery support used during procedures). The goal is to learn how the device performs and how patients do over time in real-world use.
CairnsAges 18 years+ - NCT05137665Recruiting
Study tracks ALS and health markers over time at home
This study follows people with ALS and healthy volunteers to measure how specific body fluids, symptoms, and at-home tracking change over time. It may help researchers find early signs of disease changes and better ways to measure treatment effects.
Phoenix, ArizonaAges 18 years+ - NCT05917522RecruitingPhase 2
Biomarker-guided changes to anti-rejection medicines after kidney transplant
This Phase 2 study looks at whether blood test “biomarkers” can guide safely changing anti-rejection medicines after an ABO-compatible kidney transplant. It may help some people reduce certain medicines while keeping the new kidney protected from rejection.
Birmingham, AlabamaAges 18–70 - NCT05937854RecruitingPhase 2
Tadalafil to help breathing in COPD with pulmonary hypertension
This Phase 2 study tests whether tadalafil can improve breathlessness in people with COPD and pulmonary hypertension (high blood pressure in the lungs). It may help you breathe more easily if your symptoms are driven by this specific lung circulation problem.
Aurora, ColoradoAges 35–89 - NCT05919511Recruiting
Questionnaire study for people at risk after stem cell transplant
This observational study follows people who had a stem cell transplant a few months ago to better understand risk for chronic graft-versus-host disease. You won’t get a study treatment; instead, you’ll complete questionnaires over time, and the study team looks at your symptoms and experiences.
Birmingham, AlabamaAges 18 years+ - NCT05918861RecruitingPhase 3
Tested heart-risk drug for people with recent heart-attack genetics
This trial studies whether dalcetrapib can lower future heart and blood-vessel risk in people who recently had an ACS (acute coronary syndrome, often a heart attack or unstable chest pain) and have a specific genetic marker. It may help people like you by targeting a risk pathway related to that genetic background.
Alexander City, AlabamaAges 45 years+ - NCT05916950Recruiting
Study of a new treatment for blocked leg arteries
This trial studies a device-based treatment approach for people with blocked (narrowed or fully blocked) arteries in the thigh or behind the knee that reduce blood flow to the leg. It may help improve blood flow and walking ability, but you must meet specific artery and imaging requirements.
St. Helena, CaliforniaAges 18 years+
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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.