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
- NCT04416178Recruiting
Survey and interviews for families affected by sickle cell disease
This study collects feedback through surveys, interviews, and focus groups from people affected by sickle cell disease. Your input helps the research team improve how genomic and gene-therapy information and needs are understood for patients and caregivers.
Memphis, TennesseeAges 13 years+ - NCT04427826RecruitingPhase 1/Phase 2
Morphine to prevent early NIV failure in COPD flare-ups
This trial studies whether morphine can help people with a COPD flare-up avoid “non-invasive ventilation” (breathing support through a mask) failing early. The goal is to reduce how often people need escalation of care soon after starting NIV.
Grenoble, Isère, Auvergne-Rhône-AlpesAges 18 years+ - NCT04380740RecruitingPhase 2
Longer vs shorter abatacept doses to prevent graft-versus-host disease
This trial tests whether giving abatacept for a longer or shorter time can better prevent graft-versus-host disease (a common complication after a stem cell transplant). If you’re having a planned unrelated donor transplant, the results may help reduce the risk or severity of transplant-related immune problems.
Duarte, CaliforniaAges 2 years+ - NCT04427163Recruiting
Study of health differences using blood and data profiles
This study looks at how people’s health and disease risk show up in multiple types of information collected together (like blood-related measures and other data). It may help researchers understand what patterns are linked to health versus future disease.
OlomoucAges 18–68 - NCT04388969Recruiting
Ambroxol study for Gaucher disease and Parkinson symptoms
This trial looks at ambroxol, a medicine, for people who have Gaucher disease and Parkinson disease that is linked to Gaucher. If you fit the condition group, the study may help doctors learn whether ambroxol can improve Parkinson-related symptoms in this specific situation.
Jerusalem, Please Select...Ages Up to 100 years - NCT04451044Enrolling by invitation
Guided heart stent planning using an inside pressure sensor
This study tests whether using a tiny pressure sensor in heart arteries during a procedure can better guide where to place a stent. It may help doctors choose the safest and most effective stent plan by more accurately measuring artery narrowing.
Birmingham, AlabamaAges 18 years+ - NCT02714764Recruiting
Testing how best to measure outcomes in Alexander disease
This study is looking at which measurements best capture changes over time in people with Alexander disease. It may help researchers and doctors track the disease more accurately in future care and studies.
Philadelphia, PennsylvaniaAges Any age - NCT04372108Recruiting
Long-term safety study for ustekinumab vs other biologics
This study follows adults with Crohn’s disease or ulcerative colitis to compare the long-term safety of ustekinumab against other biologic medicines. It may help show how safe these treatments are over time, using medical records.
Houston, TexasAges 18 years+ - NCT04259580Recruiting
Patient registry for ERCP procedures and related studies
This trial is a registry that collects information about adults who are having an ERCP procedure at the study site. It may help researchers better understand outcomes and improve care by tracking real-world results and possibly running smaller future studies.
Calgary, AlbertaAges 18 years+ - NCT04299945Recruiting
Beetroot juice to boost exercise in fibrotic lung disease
This trial tests whether drinking beetroot juice can improve exercise performance in people with fibrotic interstitial lung disease (scarring in the lungs). It may help your body use oxygen better during activity if you meet the study’s safety and lung-function requirements.
Vancouver, British ColumbiaAges 19 years+ - NCT04294771Recruiting
Heart problems linked to cancer immunotherapy drugs
This study looks at reports from large health databases to find out if certain cancer drugs (checkpoint inhibitors) cause heart problems. It aims to understand which patients have a higher risk, which may help doctors watch for heart issues in the future.
ParisAges Any age - NCT04302870RecruitingPhase 2/Phase 3
Test medicines for motor neurone disease using adaptive trial design
This study tests treatments for motor neurone disease (MND) and assigns people to different treatment arms in an adaptive way. It may help doctors find out which medicine works best and for whom.
Portadown, County ArmaghAges 18 years+ - NCT04344769Recruiting
Studying how a kidney-protecting pathway works in ADPKD
This study looks at how the body’s “Nrf2 response” works in people with autosomal dominant polycystic kidney disease (ADPKD). It may help researchers better understand disease biology and future treatments by comparing kidney-related signals in ADPKD patients and healthy volunteers.
Rochester, MinnesotaAges 18–30 - NCT04343417Enrolling by invitation
Kidney biopsy study that stores samples for research
This study collects and stores kidney biopsy samples (and related information) to help researchers understand kidney diseases. You may be able to join if you are already scheduled for a kidney biopsy and can consent.
New Haven, ConnecticutAges 18–99 - NCT04334031Recruiting
Hospital follow-up study for immune-related disease
This is a study that follows people with an immune-related illness at Lille University Hospital to better understand their care needs over time. By collecting information regularly, the study may help improve how future patients are monitored and treated.
LilleAges 18 years+ - NCT04263831RecruitingPhase 1/Phase 2
Low-dose IL-2 to treat Crohn’s disease flare-ups
This trial tests a low dose of IL-2 to reduce inflammation and help control Crohn’s disease symptoms. It’s for people whose Crohn’s disease hasn’t responded to at least one standard treatment or who need steroids to stay under control.
Boston, MassachusettsAges 12–80 - NCT04335994Recruiting
Home sleep testing for people with memory trouble
This study looks at how well home sleep apnea testing works for people with cognitive impairment (memory/thinking problems) to help improve outcomes. You may be asked to do a home sleep test (and possibly an in-lab test) and will involve a caregiver if needed.
Toronto, OntarioAges Any age - NCT04334707Recruiting
Study kidney damage in people with long-term diabetes
This study is looking at different kidney health patterns in people with diabetes, especially diabetic kidney disease and people who have not developed kidney damage despite long-term diabetes. It may help researchers understand why kidney problems happen—and what protective factors might prevent them.
Tucson, ArizonaAges 18 years+ - NCT04337515Recruiting
Study of a new method to prepare stem cell transplants
This feasibility study tests a technique called CLINIMACS to reduce certain immune cells (alpha/beta T-cells) before a stem cell transplant. It may help make the transplant safer and better controlled, but this is an early-stage feasibility test.
San Francisco, CaliforniaAges Up to 30 years - NCT04339270RecruitingPhase 4
Testing azithromycin in chronic lung disease with frequent flare-ups
This Phase 4 study tests whether a long course of azithromycin can reduce flare-ups in people with chronic obstructive pulmonary disease (COPD) who have had recent exacerbations. It also looks at mucus properties and how flare-ups happen.
BordeauxAges 40–85 - NCT04193475Recruiting
Uses computer learning to improve stress heart ultrasound
This study uses computer technology (“machine learning”) with stress echocardiogram images (a heart ultrasound done during stress) to improve how heart function is measured. If you are able to have a stress echocardiogram, you may be able to help test a better way to interpret the results.
CottinghamAges 20–89 - NCT04150198Recruiting
PET-MR brain scan study of resilience in Alzheimer’s
This study uses a combined PET and MRI brain scan to understand why some people with Alzheimer’s (and related “focal” types) may cope better than expected. It may help researchers find brain patterns linked to resilience and to different Alzheimer’s subtypes.
OrsayAges 40–80 - NCT04190758Enrolling by invitation
Early arthritis study for RA, psoriatic arthritis, and psoriasis
This study looks at people with early arthritis related to rheumatoid arthritis, psoriatic arthritis, or psoriasis. Researchers want to understand how these early conditions behave and may help guide better treatment decisions.
GothenburgAges 18–80 - NCT04185038RecruitingPhase 1
CAR T therapy through a catheter for pediatric brain tumors
This Phase 1 trial tests a personalized immune-cell treatment (CAR T) delivered directly in the brain-area space using a catheter. It may help children and young adults with hard-to-treat (recurrent or refractory) diffuse midline brain tumors like DIPG/DMG when standard options aren’t working.
Seattle, WashingtonAges 1–26
Hear when a new General Population (no Specific Condition or Disease) trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.