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
- NCT04061135Recruiting
Study brain and movement patterns in Parkinson’s or tremor
This study looks at brain signals, thinking, and movement behaviors in people who have Parkinson’s disease or essential tremor and are being considered for deep brain stimulation (DBS) surgery. It may help researchers better understand how DBS affects the brain and day-to-day function.
Birmingham, AlabamaAges 18 years+ - NCT04140734Recruiting
Study of spacer grafts after lower eyelid surgery
This study looks at outcomes after lower eyelid retraction repair done with a spacer graft. It may help doctors understand how well this method works and what results to expect months after surgery.
The Bronx, New YorkAges 18 years+ - NCT04040452RecruitingPhase 4
Continuous versus intermittent ketorolac for kids’ heart surgery pain
This study compares two ways of giving ketorolac (a pain medicine) to young children after heart surgery—continuous drip versus doses at set times. It aims to find which approach controls pain better with fewer side effects.
Phoenix, ArizonaAges 3 months–4.9 years - NCT04111692Recruiting
Watching foam treatment for cysts in autosomal polycystic disease
This study follows adults with inherited kidney and/or liver cysts that are causing symptoms to see how a foam sclerotherapy procedure may help and what outcomes happen over about a year. You may be eligible if you have a few sizable, specific-type cysts and can safely attend follow-up visits.
Rochester, MinnesotaAges 18–100 - NCT04086329RecruitingPhase 1
Testing an oxygen sensor during exercise in muscle disease
This early (Phase 1) study checks whether a tiny oxygen-sensing device works reliably while people with mitochondrial muscle disease (and some healthy volunteers) ride a stationary bike. The goal is to see if the sensor can measure oxygen use during exercise and help future monitoring or research.
Philadelphia, PennsylvaniaAges 18–65 - NCT04066608Enrolling by invitation
Screening for advanced liver scarring in people with HIV
This study looks at how common advanced liver scarring (advanced fibrosis) is in people living with HIV. It may help doctors better understand liver risk in everyday care and guide future prevention.
MainzAges 18 years+ - NCT04039061Recruiting
Study registry for people with ADPKD
This trial is a patient registry that collects information from people who have—or might have—autosomal dominant polycystic kidney disease (ADPKD). It may help researchers better understand the condition and improve future studies.
Kansas City, MissouriAges Any age - NCT01499394Recruiting
Biorepository study for adults who can consent
This study collects and stores samples (such as tissue or other biological materials) for future research. It mainly seeks adults who can agree to participate after understanding what it involves.
Mobile, AlabamaAges 18 years+ - NCT03995238Recruiting
Gait training for veterans with leg amputations
This study tests a walking rehabilitation plan to improve how you walk after a lower-leg amputation. It may help if your walking steps are uneven and you have diabetes and/or circulation problems in your legs.
Aurora, ColoradoAges 40–89 - NCT03952637RecruitingPhase 1/Phase 2
Gene therapy for GM1 disease with IV delivery
This early-stage study tests an IV gene therapy that delivers a working copy of an enzyme gene to help the body make beta-galactosidase in GM1 gangliosidosis. It may help slow or improve disease symptoms and looks closely at safety and how well the treatment works.
Bethesda, MarylandAges 6 months–12 years - NCT03949855RecruitingPhase 2
Belimumab plus rituximab for primary membranous nephropathy
This study tests whether adding belimumab to rituximab helps people with primary membranous nephropathy (a kidney disease) that has the right blood test marker and specific protein levels. The goal is to improve kidney outcomes and reduce disease activity while keeping treatment safe.
Birmingham, AlabamaAges 18–75 - NCT04008368RecruitingPhase 1/Phase 2
Second stem cell transplant for sickle cell with declining donor cells
This Phase 1/2 study tests whether repeating a stem cell transplant can help people with sickle cell disease (SCD) whose donor cells are no longer holding strong. It may help restore healthier blood cell production and reduce symptoms such as pain crises and severe anemia.
Bethesda, MarylandAges 2–80 - NCT04003272Enrolling by invitation
Reverse shoulder implant study for severely damaged rotator cuff
This trial studies a specialized reverse shoulder implant system for people whose rotator cuff is badly damaged or who had a prior shoulder replacement that failed. It aims to reduce pain and improve function by improving how your shoulder works, especially when the rotator cuff can’t do its job.
Louisville, KentuckyAges 18 years+ - NCT04003311Enrolling by invitation
Follow-up for specific shoulder implant types and surgery
This study checks outcomes in people who already received certain Zimmer Biomet shoulder implant components using the correct surgical technique. It may help improve how these specific implants are used and monitored after surgery.
Boise, IdahoAges 18 years+ - NCT03994471RecruitingPhase 3
Testing a new peritoneal dialysis fluid for kidney failure
This Phase 3 trial studies how well a new peritoneal dialysis solution works and whether it is safe. It’s meant for adults with kidney failure who already do a specific type of at-home dialysis.
AalborgAges 18 years+ - NCT03970096RecruitingPhase 2
Reduce graft-versus-host disease after stem cell transplant
This Phase 2 study tests ways to lower the risk of graft-versus-host disease (GVHD), a serious complication after an allogeneic stem cell transplant from a matched donor. It is for people with acute leukemia or MDS who are going to receive intensive conditioning therapy, aiming to improve safety while keeping the transplant effective.
Tampa, FloridaAges 1–60 - NCT03954899Recruiting
Melatonin test for brain health in older adults
This study tests whether taking 5 mg of melatonin can improve thinking and brain health over time in older adults with early, mild symptoms. You may help researchers learn which brain changes and measures improve with melatonin.
Iowa City, IowaAges 56–85 - NCT03983603Recruiting
Plant stanols and asthma symptoms prevention
This trial tests whether eating plant stanols (a natural substance found in some foods) can help prevent asthma symptoms in people with stable allergic asthma. You would need to take a daily chew and avoid certain cholesterol-lowering products during the study.
Maastricht, LimburgAges 18–70 - NCT03976622Enrolling by invitation
Inflammation study in vitiligo and other skin conditions
This study looks at inflammation in people with vitiligo, psoriasis, atopic dermatitis, or alopecia areata. It aims to understand how these conditions compare, which may lead to better treatments.
Bordeaux, BordeauxAges 18–75 - NCT04024761RecruitingPhase 1
NK cell therapy for leukemia relapse after transplant
This Phase 1 study tests whether an infusion of special immune cells (NK cells) from a donor can help control leukemia or related blood cancers that come back or do not fully go away after a stem cell transplant. It also uses short chemotherapy to “make space” for the NK cells to work, and IL-2 to help them function.
Boston, MassachusettsAges 12 years+ - NCT03997552Recruiting
Gum surgery options to help regenerate damaged gum bone
This trial compares two dental gum surgery approaches to see which better helps the gum and bone heal in people with periodontitis. It may help by improving the depth of gum pockets and supporting regrowth of damaged areas around teeth.
MurciaAges 18 years+ - NCT04014803RecruitingPhase 4
Aspirin plus one blood thinner versus aspirin plus clopidogrel
This trial compares two common “blood thinner” combinations to prevent problems after a PCI procedure for complex blocked heart arteries. It may help your care team find which combination works better for people with higher-risk artery patterns.
SeoulAges 19–75 - NCT03965234RecruitingPhase 1/Phase 2
Lung infusion for colorectal cancer that has spread to the lungs
This trial tests a procedure where chemotherapy is delivered directly into the lungs during surgery to remove or destroy lung tumors. It aims to reduce the chance of cancer returning after surgery for people with colorectal cancer that has spread to the lungs.
Buffalo, New YorkAges 18 years+ - NCT03979534Recruiting
Protecting Kidneys With a Low-Protein Diet
This study tests whether a step-by-step low-protein diet can help protect your kidneys if you have advanced chronic kidney disease (stages 4 or 5) or stage 3 that is getting worse quickly. The goal is to see if this diet approach can slow down kidney damage.
La FlècheAges 18 years+
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,548 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.