Clinical trials
Adult clinical trials
Below are recruiting adult clinical trials, each written for real people, not researchers. We’re tracking 3,743 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06395415Recruiting
Mobile health program for young adult e-cigarette users
This study tests a mobile health program to help young adults ages 18–26 who use e-cigarettes regularly to reduce or quit. It uses text messages to support you, and you'll need to be interested in changing your vaping habits.
Chicago, IllinoisAges 18–26 - NCT06319885Recruiting
Text messaging to reduce high-risk alcohol use in older adults
This study uses text messages to help adults aged 55–80 who drink above recommended limits to reduce their alcohol intake. If you want to cut back but not necessarily quit completely, this program may be a good fit for you.
Odense, Southern DenmarkAges 55–80 - NCT06380426Recruiting
Semaglutide for teens and adults with genetic obesity
This study looks at how semaglutide works in real life for people with obesity caused by a single gene change. If you or your teenager have this type of obesity and are taking or about to start semaglutide, you may be able to join.
ParisAges 12 years+ - NCT07641426RecruitingPhase 1/Phase 2
CID-103 Treatment for Kidney Transplant Rejection
This study tests an experimental drug called CID-103 to treat antibody-mediated rejection (ABMR), a type of immune response that damages transplanted kidneys. The drug targets immune cells that attack the transplant, and researchers hope it may help preserve kidney function and prevent transplant failure.
Beijing, Beijing MunicipalityAges 18 years+ - NCT00900471Recruiting
Store tissue samples from surgery for suspected solid tumors
This study collects and stores small tissue samples from people who have surgery or a biopsy for a suspected solid (non-blood) tumor. It helps researchers study these cancers for future testing and research.
Winston-Salem, North CarolinaAges 18–120 - NCT06822426RecruitingPhase 3
Preventing infections in central lines for people on IV nutrition
This trial tests a new catheter lock solution (DefenCath) to prevent infections in people who need long-term IV nutrition through a central line. It compares the study drug to a standard heparin lock, and you'll be randomly assigned to one group.
Los Angeles, CaliforniaAges 18 years+ - NCT06345443Enrolling by invitation
Nicotinamide riboside for blood vessel health
This trial tests a nutritional supplement (nicotinamide riboside) to see how it affects blood flow in healthy adults. It may help understand how to support vascular health as we age.
Rochester, MinnesotaAges 35–70 - NCT06430957Recruiting
Sleep apnea risk after dental surgery under general anesthesia
This study checks dental patients for the risk of sleep apnea before surgery and looks at whether that risk is linked to problems after general anesthesia. It may help you understand your own risk and improve safety.
KayseriAges 18–80 - NCT07419633Recruiting
Study on supplements to improve strength and thinking in older adults
This trial tests if two supplements, HMB and 2-HOBA, taken alone or together, can help improve muscle strength and mental function in healthy adults over 65. The goal is to see if these supplements can improve overall quality of life.
Montreal, QuebecAges 65 years+ - NCT02701036Recruiting
Natural history study for adult-onset progressive ataxia
This study follows people with progressive balance and coordination problems that started after age 40. The goal is to better understand what happens over time, which can help future treatments be developed for similar conditions.
InnsbruckAges 40 years+ - NCT06743464Recruiting
Rifaximin before liver transplant for better early liver function
This trial tests whether taking the antibiotic rifaximin just before and after a living-donor liver transplant can help prevent early problems with the new liver. It may be an option for adults having this surgery at the study hospital.
New Delhi, National Capital Territory of DelhiAges 18 years+ - NCT06734351RecruitingPhase 3
Comparing two gels for cheek fullness
This study tests a new injectable gel (NOA VOLUME) for restoring fullness in the cheeks, comparing it to an already-approved gel (JUVÉDERM VOLUMA XC). It's for adults with moderate to severe cheek hollowing who want a safe, effective option.
Birmingham, AlabamaAges 22 years+ - NCT07102914Enrolling by invitation
Education program health survey study
This study looks at how a short program at adult education centers might help students and staff. It aims to understand what kind of support could be most useful for people working on their high school diploma or GED.
New Haven, ConnecticutAges 17 years+ - NCT07417189RecruitingPhase 1/Phase 2
Study of ABSK141 for advanced solid tumors with KRAS G12D mutation
This study tests a new drug called ABSK141 for people with advanced solid tumors that have a specific mutation called KRAS G12D. It aims to see if the drug can shrink or control the cancer, and it has different phases for different groups of patients.
ShanghaiAges 18 years+ - NCT06805175Recruiting
Balance implant study for adults with dizziness
This study tests a new device that may help restore balance for people with long-term dizziness from inner ear problems. The implant is placed surgically to stimulate the balance nerve.
Antwerp, WilrijkAges 18 years+ - NCT03789383Recruiting
Living donor liver transplant and biliary complication outcomes study
This study looks at what factors lead to “biliary complications” (problems involving the bile ducts that help move bile from the liver) after an adult living-donor liver transplant. It’s aimed at people who had this specific type of transplant at the study hospital in Egypt.
AsyutAges 18–65 - NCT06727708Recruiting
Comparing two exercise programs for fitness in adults 30-65
This study is testing two different 12-week exercise programs to see which one better improves physical fitness and body composition. It might be a good fit if you're a healthy adult aged 30-65 who is new to strength training.
Leibnitz, Styria, StyriaAges 30–65 - NCT07612813RecruitingPhase 1
Safety study of AZD7760 in healthy Japanese adults
This is a Phase 1 safety study of a new investigational drug called AZD7760 in healthy Japanese volunteers. The trial will test how the body handles the drug and monitor for any side effects.
Sumida-kuAges 18–55 - NCT07280858RecruitingPhase 1/Phase 2
Testing a new sarbecovirus vaccine in healthy adults
This study tests a new vaccine called GBP511, designed to protect against several types of sarbecoviruses (including COVID-19). It is for healthy adults who have already received a primary COVID-19 vaccine series plus at least one booster, at least 24 weeks before joining.
Sydney, Kent StreetAges 18 years+ - NCT07284342Recruiting
Study on sleep and advanced Parkinson's with foslevodopa/foscarbidopa
This study looks at how a Parkinson's drug delivered under the skin (foslevodopa/foscarbidopa) affects sleep problems in people with advanced Parkinson's. It is a real-world study that follows your usual treatment, no new experimental drug is being tested.
Málaga, AndalusiaAges 18 years+ - NCT06259565RecruitingPhase 3
Breathing mask sedation trial for agitated adults
This trial tests whether adding a sedative called dexmedetomidine to non-invasive ventilation (a breathing mask) helps adults who are agitated or uncomfortable while on the mask. It aims to improve comfort and avoid the need for a breathing tube.
Surrey, British ColumbiaAges 18 years+ - NCT06292845Recruiting
Using fluorescent dye to see tumors during surgery
This trial tests whether a fluorescent dye applied to tissue during surgery helps doctors see tumors and check if the tumor removal is complete. If you have a solid tumor and are scheduled for surgery, this study may improve the precision of your operation.
Rotterdam, South HollandAges 18 years+ - NCT07390955RecruitingPhase 1
Safety study of three anti-HIV antibodies in healthy adults
This study is testing three experimental antibodies (ePGT121v1-LS, PGDM1400LS, and VRC07-523LS) that may help prevent HIV. It’s looking at their safety and how long they stay in the body. Healthy volunteers without HIV can join.
Birmingham, AlabamaAges 18–55 - NCT06657989Recruiting
Balance training for older adults to prevent falls
This study tests different intensities of balance training that helps older adults react quickly to trips or slips. It aims to find the most effective training to improve balance and reduce fall risk.
Toronto, OntarioAges 65–80
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Common questions
- Are there clinical trials for adult?
- Yes. Clin2 currently lists 3,743 recruiting adult 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 adult 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 adult 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.