Clinical trials
Control clinical trials
Below are recruiting control clinical trials, each written for real people, not researchers. We’re tracking 2,964 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04840017Enrolling by invitation
Rehab program for balance and walking in flexible flatfeet
This trial tests whether a rehabilitation exercise program can improve balance and walking in children who have flexible flatfeet. The goal is to see if targeted rehab improves posture, stability, and gait (how your child walks).
GdanskAges 7–12 - NCT04788524Recruiting
Brain and stress study in depressed teens with control feelings
This study uses brain scans and short real-life mood/stress check-ins to understand how stress and perceived control work in teens with depression. It may help researchers better pinpoint brain patterns linked to depression and how teens experience control during stressful moments.
Belmont, MassachusettsAges 14–18 - NCT04831060Recruiting
Study of inflammation in gum and implant disease
This trial studies people with advanced gum disease (periodontitis) or gum inflammation around dental implants (peri-implantitis), and compares them with people who have healthy gums. The goal is to understand inflammation and how it relates to these dental conditions.
Ivry-sur-SeineAges 18 years+ - NCT04785443RecruitingPhase 3
Check whether dye-guided imaging helps find parathyroid glands
This study tests whether using a special camera with a fluorescent dye (called ICG angiography) during total thyroid surgery can help doctors find the parathyroid glands more reliably. It aims to lower the risk of “low parathyroid hormone,” which can lead to low calcium after surgery.
BrestAges 18 years+ - NCT04804332Recruiting
Hysteroscopy to remove leftover tissue after miscarriage
This trial studies the best way to remove leftover pregnancy tissue after a first-trimester miscarriage. It compares approaches guided by a camera procedure in the uterus to see which helps most, especially for people who want to get pregnant again soon.
GhentAges 18–39 - NCT04697823Recruiting
Hyaluronan added to IVF fluid to help ongoing pregnancy rates
This study tests whether adding hyaluronan (a substance found naturally in the body) to IVF lab fluid can help more people achieve a pregnancy that is still ongoing after treatment. It is focused on people having a second or third egg retrieval after not becoming pregnant previously.
LeuvenAges 18–40 - NCT04735172Recruiting
Brain scan to compare Parkinson chemical signals in early patients
This study uses a special 7‑Tesla MRI brain scan to measure tiny chemical (metabolite) differences in specific deep brain areas. It compares newly diagnosed, early-stage Parkinson’s patients who are not on Parkinson medication with healthy volunteers.
Clermont-FerrandAges 18–75 - NCT04697966Recruiting
Smartphone mindfulness program for teens and what predicts improvement
This study tests an app-based mindfulness training program for adolescents ages 13–18 and looks at what helps predict which teens improve. It may be helpful if you’re looking for a structured mindfulness practice and want to understand what changes in your thinking and feelings over time.
Belmont, MassachusettsAges 13–18 - NCT04699747RecruitingPhase 1
MRI and PET scan study for multiple sclerosis brain changes
This Phase 1 study tests a special tracer used during MRI and PET scans to look at brain changes in people with multiple sclerosis. It’s mainly aimed at improving how these scans can detect disease-related changes and confirming the tracer works safely.
Boston, MassachusettsAges 18–65 - NCT04719026Recruiting
Teeth and heart attack link in people with or without heart attacks
This study compares dental health in people who were recently admitted for a heart attack with similar people who have not had a heart attack. It aims to see whether gum and dental health might be related to heart attack risk.
AberdeenAges 20–90 - NCT04700527RecruitingPhase 1/Phase 2
Nutritional supplement for reducing side effects from radiation to the belly or pelvis
This trial is studying whether a nutritional supplement (a type of short-chain fatty acid) can help reduce the side effects of radiation therapy for cancers in the abdomen or pelvis. It aims to improve quality of life during treatment.
Chapel Hill, North CarolinaAges 18 years+ - NCT04765514RecruitingPhase 2
Chemo with radiation versus chemo alone for older brain tumor patients
This trial compares two standard treatments for newly diagnosed glioblastoma (a serious brain cancer) in older and frail patients: chemo plus radiation versus chemo alone. It may help determine which approach works best and is safest for people in your age and health group.
Calgary, AlbertaAges 65 years+ - NCT03799991Recruiting
Balance therapy for people with early-to-moderate Alzheimer’s
This trial tests whether an 8-week balance and movement program can help people with early-to-moderate Alzheimer’s who also have inner-ear (vestibular) balance loss. You and a caregiver may learn exercises and attend weekly visits, while researchers compare the results to an active control program.
Baltimore, MarylandAges 60 years+ - NCT04662905Recruiting
Testing a closed-loop spinal cord stimulator for chronic pain
This study tests a new way to deliver spinal cord stimulation for chronic pain using a system that adjusts automatically based on what your body is doing. You may be able to join if you’re using the Evoke system as part of the approved treatment plan.
Garran, Australian Capital TerritoryAges 18 years+ - NCT04678752Enrolling by invitation
Weight management program through primary care visits
This study tests a practical weight-management approach delivered in regular primary care clinics. You may be offered support to help with weight if you’re an adult with a higher-than-normal BMI.
Arvada, ColoradoAges 18–89 - NCT04607096Recruiting
Intermittent fasting to improve insulin in prediabetes or early type 2
This study tests whether intermittent fasting can improve how your body releases and uses insulin if you have prediabetes or early type 2 diabetes. It may help your blood sugar control without using insulin.
BerlinAges 18–70 - NCT04653064Recruiting
Brain imaging study of how people feel heat and pain
This study uses MRI scans to understand how your brain responds to different feelings, including mild heat pain. It may help researchers learn more about pain and brain processing by comparing your responses during the tests.
Hanover, New HampshireAges 18 years+ - NCT04604509RecruitingPhase 4
Smoking quit plan using counseling and nicotine-free medicines
This trial tests whether a quit program that combines counseling with medicines (nicotine replacement, varenicline, or bupropion) helps people stop or cut down smoking. It’s also delivered through telehealth, with repeated check-ins to see how well the plan works and whether it’s safe for you.
Houston, TexasAges 18 years+ - NCT04641039Recruiting
Study of scar differences after lumbar disc replacement
This study compares how postoperative scars look and behave after certain lumbar disc replacement surgery. It may help doctors choose approaches that reduce excessive scar-related problems after surgery.
Valencia, ValenciaAges 18–50 - NCT04664686Recruiting
Compare two heart-rhythm strategies after CRT for atrial fibrillation
This study looks at whether a “rate control” or “rhythm control” approach works better for people with CRT devices who still have atrial fibrillation. It aims to improve heart failure symptoms and help the heart pace more effectively.
LondonAges 18–85 - NCT04592445Recruiting
Nerve ablation for right-sided symptoms in HFpEF heart failure
This trial tests a procedure to “turn off” the right greater splanchnic nerve to improve symptoms in people with HFpEF (heart failure with preserved pumping function). If successful, it may reduce shortness of breath and fluid congestion in daily life.
Birmingham, AlabamaAges 40 years+ - NCT04533295Recruiting
Acupuncture to support pregnancy in women with failed IVF
This trial studies whether adding acupuncture during embryo transfer and hormone treatment can improve pregnancy outcomes for women who have had repeat IVF implantation failures with no known cause. It may help your chance of clinical pregnancy when you transfer good-quality frozen embryos.
Wuhan, HubeiAges 25–40 - NCT04529031Recruiting
Study of reminder-based positive thinking for teens with PTSD
This study looks at whether a “reminder-focused positive thinking” approach can help teens with PTSD. It may benefit you by testing how certain cues and supportive thoughts affect PTSD symptoms and related wellbeing.
Los Angeles, CaliforniaAges 11–15 - NCT04583514Recruiting
Overfeeding study to see how body fat can expand
This trial studies how your body’s fat tissue changes when you eat extra food for 8 weeks. It may help researchers understand why some people gain more weight than others.
Baton Rouge, LouisianaAges 18–42
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Common questions
- Are there clinical trials for control?
- Yes. Clin2 currently lists 2,964 recruiting control 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 control 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 control 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.