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
- NCT04584632Recruiting
Stent-like device for blocked leg arteries in the thigh or knee
This trial studies a new stent-like vascular scaffold to improve blood flow in people with symptomatic blockage in the thigh/knee artery. It may help reduce symptoms from narrowed or blocked arteries, but you must meet several artery and health requirements.
Sydney, New South WalesAges Any age - NCT04624490RecruitingPhase 1
Lung function MRI using a special gas in volunteers
This Phase 1 study tests a lung scan that uses a special gas and MRI to measure how well your lungs work. It includes healthy volunteers and people with lung disease to see how well the scan works and how safe it is.
Kansas City, KansasAges 3 years+ - NCT04645199Recruiting
Long-term follow-up study for blood and bone marrow diseases
This study is collecting long-term follow-up information from people diagnosed with certain blood and bone marrow conditions. It may help doctors understand what happens over time and improve future care, but you’re mainly contributing data rather than receiving a new treatment.
Tianjin, Tianjin MunicipalityAges Any age - NCT04663204RecruitingPhase 2
Sparsentan study for IgA kidney disease in adults
This Phase 2 trial studies whether sparsentan is safe and can slow down kidney damage in adults with IgA nephropathy (IgAN). Participants may receive sparsentan to improve kidney-related measures such as protein in the urine.
Cambridge, EnglandAges 18 years+ - NCT04666402Recruiting
Testing better ways to diagnose early liver disease
This study looks at integrated diagnostic tests to find early liver problems sooner. It may help you (if referred to the community liver clinic) get more timely information about what’s going on.
Manchester, Greater ManchesterAges 18 years+ - NCT04671771Recruiting
Testing a new graft for hemodialysis access in kidney failure
This study tests whether an “AV graft” implant works safely and well for people with end-stage kidney disease who need hemodialysis. It may help your dialysis access last and work better, compared with current expectations for AV grafts.
Phoenix, ArizonaAges 18–90 - NCT04690972Recruiting
Collection of blood and tissue samples for liver disease research
This study builds a research library of biological samples (like tissue and blood) from people with chronic liver disease. It aims to create better lab and preclinical models of tumors and long-term liver problems, which may help future treatments.
StrasbourgAges 18 years+ - NCT04715399Recruiting
Research study collecting data for neurodegenerative diseases
This study collects health information from people with neurodegenerative diseases, some family members, and healthy controls to help researchers better understand these conditions. It may help future diagnosis and research, and participation may include noninvasive checks and other procedures depending on your situation.
Philadelphia, PennsylvaniaAges 18 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+ - NCT04777656RecruitingPhase 3
Crohn’s exclusion diet plus usual care for kids
This study tests whether a specific “exclusion diet” (removing certain foods) added to standard treatment can better control unstable Crohn’s disease in children. It may help reduce inflammation and flare-ups when symptoms are not controlled by usual medicines.
BronAges 6–17 - NCT04804618Recruiting
Study uses blood protein changes in memory loss and Alzheimer’s
This trial studies blood “protein fingerprints” in people with mild memory problems or Alzheimer’s disease to better understand what’s happening. It may help researchers find ways to measure the condition and improve care over time.
Guangzhou, GuangdongAges 55 years+ - NCT04813159Recruiting
Remote heart preconditioning for people with blocked-heart-attack
This study tests whether a remote, arm-based treatment done around the time of a heart attack can improve outcomes in people with STEMI (a serious heart-attack type). Some participants receive the real treatment and some receive a sham version, while others may be followed observationally depending on how long ago symptoms started.
Mombasa, Mombasa CountyAges 18 years+ - NCT04844606RecruitingPhase 3
Mirikizumab for kids with ulcerative colitis or Crohn’s
This study checks whether continuing mirikizumab (a medicine that calms gut inflammation) helps children with ulcerative colitis or Crohn’s disease after prior study treatment. It aims to see if staying on the medicine is beneficial and safe over time.
San Francisco, CaliforniaAges 2–19 - NCT04864886Recruiting
Study how immune-related conditions affect metabolism
This study collects blood and other samples to see how the immune system changes “metabolism” (how your body uses energy) in people with immune-related conditions. Your samples may also be stored for future research and could help researchers better understand immune health.
Bethesda, MarylandAges 18–75 - NCT04902807Recruiting
Tool to help decide diagnosis and treatment in immune disorders
This trial tests a tool (a way of collecting health information) to help doctors make better diagnosis, prognosis, and treatment decisions for children with certain immune problems. It also includes healthy children (like relatives) as comparison groups, to see how well the tool works.
ParisAges 1–18 - NCT00028080Recruiting
Evaluation and treatment for active Lyme disease
This study evaluates and treats people who currently have active Lyme disease, as defined by CDC criteria. It aims to provide expert care and follow-up while studying the disease.
Bethesda, MarylandAges 2–99 - NCT04941326Recruiting
Spinal mobilization for breathing in Parkinson’s disease
This study tests whether a hands-on therapy to the spine can improve breathing measures in people with Parkinson’s disease. If you qualify, you would receive spinal mobilization and have your breathing assessed to see if it helps.
BoluAges 50–85 - NCT04946448Recruiting
Test a Crohn’s diet and biologic medicine combination
This study tests whether combining a specific diet with biologic medicines can reduce active inflammation and symptoms of Crohn’s disease. It may help people who still have active disease in the bowel despite prior care.
LeuvenAges 18–80 - NCT04970446RecruitingPhase 1/Phase 2
Fecal transplant to restore gut microbes in Crohn’s
This Phase 1/2 study tests whether a fecal microbiome transplant (FMT) can reduce active inflammation in people with Crohn’s disease. It’s designed for people who currently have signs of active bowel inflammation and can attend regular procedure visits.
Melbourne, VictoriaAges 18–70 - NCT04988685Recruiting
Heart artery balloon treatment registry study for adults
This study follows adults with blocked heart arteries who are treated using a special type of balloon (drug-coated balloon) during a procedure. It aims to track real-world outcomes to better understand how well this treatment works for people with new blockages or previously treated vessel narrowing.
Lucerne, Canton of LucerneAges 18 years+ - NCT05007340Recruiting
ILD and autoimmune conditions registry and sample storage
This study collects health information and may store blood or other samples to learn more about interstitial lung disease (ILD) and autoimmune-related conditions. Joining could help researchers understand different causes of ILD and improve future care.
Montreal, QuebecAges 18 years+ - NCT05007990Recruiting
Interview study of caregiving networks over a person’s life
This study uses interviews and questionnaires to better understand who makes up a caregiver’s support network when caring for someone with a long-term health condition. Your answers may help researchers understand how caregiving changes over time and across different health situations.
Bethesda, MarylandAges 18–100 - NCT05010603Recruiting
Studies families to understand late-onset Alzheimer’s
This study focuses on people with late-onset Alzheimer’s (and some similar memory diseases) and uses a close family “informant” to share what they’ve noticed. It may help researchers learn more about these conditions and how they progress in families.
Washington D.C., District of ColumbiaAges 55 years+ - NCT05036707RecruitingPhase 1/Phase 2
Study how tick bites change immune responses
This study looks at how a person’s immune system responds after exposure to Ixodes (black-legged) tick bites. It aims to better understand the body’s early immune reaction after tick exposure, using blood tests and small skin samples.
Bethesda, MarylandAges 18–99
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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.