Clinical trials
Humans clinical trials
Below are recruiting humans clinical trials, each written for real people, not researchers. We’re tracking 1,243 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT02450851Recruiting
Find answers for undiagnosed medical conditions using genetic testing
This study helps look for causes of health problems when no one has been able to give a diagnosis. It tests and shares medical and genetic information (with privacy protections) so researchers can better match findings to possible causes.
Birmingham, AlabamaAges 1 month–100 years - NCT02543996Recruiting
Providing blood or tissue samples to study disease
This study collects and stores biological samples (like blood and cord blood) to help researchers understand what causes disease. You may be asked to provide samples during pregnancy, delivery, or from an affected person, depending on eligibility.
Bethesda, MarylandAges 1 month–100 years - NCT02820233Recruiting
Study of a heart-signal drug during bypass surgery
This study looks at a treatment that affects signals between heart cells in people with severe coronary artery disease who are scheduled for bypass surgery. The goal is to see if changing these heart-cell signals can improve heart outcomes around the time of surgery.
Portland, MaineAges 18 years+ - NCT02479698RecruitingPhase 2
T Cell treatment for cancers and BK/JC virus illness
This trial studies an infusion of “cytotoxic T lymphocytes” (immune cells) to treat people with certain cancers or illnesses caused by BK and/or JC viruses. It may help your immune system fight the virus and related organ complications when standard treatments have not worked well enough.
Houston, TexasAges Any age - NCT02781519RecruitingPhase 1
Study how THC affects men and women who have used cannabis before
This Phase 1 study tests how delta-9 THC (the main active ingredient in cannabis) affects healthy adults, and whether the effects differ by gender. It may help researchers understand risks and responses to THC, which could guide safer use and future treatments.
West Haven, ConnecticutAges 18–55 - NCT02573753Recruiting
Study how sleep affects gut bacteria and health
This study looks at how different sleep patterns change the microorganisms in your gut (gut bacteria) and what that may mean for health. It’s mainly for people who can take part in other approved research studies at the same time.
Rochester, MinnesotaAges 18 years+ - NCT02861781Recruiting
Collecting body tissue samples during bariatric surgery
This study collects small tissue samples during planned weight-loss surgery to better understand metabolism and how insulin works in people with and without type 2 diabetes. You may help researchers by allowing their team to take these samples while you are already having surgery.
MontpellierAges 18–65 - NCT02811510RecruitingPhase 1
Study of THC effects on people with past cannabis use
This Phase 1 study tests how THC (the main active ingredient in cannabis) affects healthy adults, and whether effects differ by gender. It’s designed to learn about short-term body and brain responses to THC.
West Haven, ConnecticutAges 18–55 - NCT02431507Recruiting
First test of an implant device to prevent sleep apnea pauses
This trial is testing whether a new implanted device is safe and feasible for people with moderate to severe obstructive sleep apnea. It may help if you cannot tolerate CPAP (a common breathing device) and your apnea is caused by airflow blockage at the back of the tongue area.
San Francisco, CaliforniaAges 21–70 - NCT02864108Recruiting
Study of Trisomy in people with and without Down syndrome
This study includes people of many ages to help researchers learn more about Trisomy (an extra chromosome condition) in those with and without Down syndrome. It may help improve understanding and future care for people affected by chromosome differences.
Denver, ColoradoAges 6 months–89 years - NCT02769975Recruiting
Check children and teens with hormone and metabolism problems
This study evaluates children (and sometimes relatives) who may have hormone (endocrine) or metabolism-related conditions. It helps doctors better understand these problems by doing a clinical evaluation.
Bethesda, MarylandAges 3 months–100 years - NCT02863757Recruiting
Follow-up study for chronic hepatitis B with fatty liver
This study follows people who have chronic hepatitis B and also have fat buildup in the liver (nonalcoholic fatty liver disease). It’s looking at how these conditions behave over time and what may help, using information collected during follow-up visits.
Hong Kong, Hong KongAges Any age - NCT02390765Recruiting
Study of growth, weight, and behavior in children
This study looks at how children’s growth and weight relate to thinking, mood, and behavior. It may help researchers understand what patterns affect health and development so they can guide better support for families.
Bethesda, MarylandAges 8–100 - NCT02639299Recruiting
Screening healthy adults for malaria vaccines and drug studies
This study screens healthy adults to see who can join future malaria vaccine or investigational malaria drug studies, including a controlled malaria exposure. It may help researchers test safer vaccines/drugs, but participation requires good health and strict medical eligibility.
Bethesda, MarylandAges 18–50 - NCT02846571RecruitingPhase 1/Phase 2
Diabetes cell transplant placed in the eye to restore insulin
This Phase 1/2 study tests whether transplanting insulin-producing cells into the front part of the eye can help people with diabetes. It focuses on people who already have severe, non-usable vision in one eye, to limit risk while the treatment is studied.
Miami, FloridaAges 18–75 - NCT03357536Recruiting
Study genes that may make people more prone to listeria
This study looks at whether certain inherited genetic differences may increase the risk of getting listeria infection (listeriosis) or developing more severe or unusual forms. Results may help researchers better understand who is at higher risk and why.
ParisAges Any age - NCT03307304Recruiting
Studying different forms of childhood brain-wasting disease
This study looks at people with CLN3 and other related forms of NCL (a childhood brain-wasting illness) to better describe symptoms and disease changes over time. You may be followed with regular check-ins, medical records, and sometimes NIH visits or sample collection.
Bethesda, MarylandAges 1 week–100 years - NCT03366168Recruiting
Using tongue tissue to grow stem cells in adults
This study takes a small sample from the front of your tongue to grow stem cells from your taste-bud tissue. It aims to understand whether this approach can be safely done in healthy adults and explore how the cells might be used in the future.
Baltimore, MarylandAges 18–120 - NCT07677137Recruiting
Testing a nerve stimulator for hard-to-treat chronic cluster headache
This trial tests a device that uses mild electrical pulses to the nerves at the back of the head to prevent cluster headaches. It is designed for people whose headaches have not responded to multiple standard treatments.
Sint-NiklaasAges 22–70 - NCT06813339RecruitingEarly Phase 1
Testing a new drug in healthy people and those with heart condition
This trial tests a new medicine called UDP-003 in two groups: healthy volunteers and people who had a heart event (acute coronary syndrome) at least a year ago. The goal is to see if the drug is safe and how the body handles it, which could lead to better treatments for heart disease.
Adelaide, South AustraliaAges 18–79 - NCT07464314RecruitingPhase 1
Testing a combined flu and COVID-19 mRNA vaccine in older adults
This trial is testing whether a new mRNA vaccine that targets both seasonal flu and COVID-19 is safe and creates a strong immune response. It may offer an easier way to protect against two illnesses with one shot.
Anniston, AlabamaAges 65–85 - NCT07483515Recruiting
Bonding before birth: an app for first-time parents
This trial tests a mobile health app for first-time expectant couples to strengthen bonding during pregnancy. It may help reduce stress and improve emotional connection.
SingaporeAges 21–75 - NCT07513389RecruitingPhase 2
HPV throat cancer trial skipping radiation with blood tests
This study tests whether patients with a specific type of HPV-positive throat cancer can safely skip radiation after surgery by using blood tests to monitor for cancer recurrence. The goal is to reduce side effects while keeping patients cancer-free.
Charleston, South CarolinaAges 18 years+ - NCT07546461Enrolling by invitation
Testing Moon and Mars habitat systems through simulations
This study simulates working and living in lunar habitats, spacecraft during transit, and Mars surface environments. Researchers are testing how equipment, living spaces, and work routines function in these extreme conditions by having participants work through realistic scenarios in controlled settings.
New York, New YorkAges 18–65
Hear when a new Humans 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 humans?
- Yes. Clin2 currently lists 1,243 recruiting humans 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 humans 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 humans 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.