Clinical trials
Humans clinical trials
Below are recruiting humans clinical trials, each written for real people, not researchers. We’re tracking 1,228 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05604534Recruiting
MRI tests to improve brain scan measurements
This study uses MRI scans to check and improve how medical teams measure brain changes. If you’re eligible, you’ll complete MRI safety screening and imaging while the team studies which scan measurements work best.
Bethesda, MarylandAges 18–100 - NCT05600842Recruiting
Lower-dose radiation for HPV-positive throat cancer
This trial tests whether using a de-escalated (lower/intensity-reduced) radiation approach can treat HPV-positive oropharyngeal squamous cell carcinoma. It may help reduce side effects while still keeping the cancer under control.
Orange, CaliforniaAges 18 years+ - NCT05586802RecruitingPhase 3
Balancing sex hormones to improve metabolism and fertility in Klinefelter
This study tests whether adjusting sex-hormone levels can improve body metabolism and reproductive hormone balance in people with Klinefelter syndrome. Depending on the design, you may be looking at fertility preservation and/or metabolic health.
LausanneAges 16–65 - NCT05584670RecruitingPhase 1/Phase 2
Testing a new cancer drug for advanced solid tumors
This is an early (Phase 1/2) study of SAR445877, a new drug, in adults with advanced or metastatic solid cancers. It aims to find the safest dose and learn whether it can shrink tumors or help control disease when standard treatments aren’t available or no longer work.
Newark, DelawareAges 18 years+ - NCT05548322Recruiting
Testing touch feedback for prosthetic limbs in healthy people
This study tests how well a prosthetic touch system can give realistic sensory feedback. It aims to improve how prosthetic users feel touch and movement, based on controlled testing in volunteers.
MarseilleAges 20–70 - NCT05518188RecruitingPhase 1/Phase 2
Gene therapy trial for a childhood AP4M1 brain disorder
This trial studies a one-time gene therapy meant to help children with SPG50 disease caused by changes in the AP4M1 gene. Researchers will give the treatment and closely monitor safety and early signs of benefit.
Dallas, TexasAges 4 months–10 years - NCT05537935RecruitingPhase 4
Low-dose naltrexone for nerve pain in people with HIV
This trial studies whether a low dose of naltrexone can reduce long-lasting nerve-related pain in adults living with HIV. It may help if your pain has been ongoing and you have stable HIV control.
Atlanta, GeorgiaAges 18–75 - NCT05514223Recruiting
Testing sperm samples to understand lifestyle, gut, and sperm quality
This study measures “free radicals” in sperm to see how lifestyle and the microbiota (gut/community of microbes) may relate to sperm health. You may be asked to provide a semen sample as part of standard fertility testing, unless certain health factors apply.
Groningen, Provincie GroningenAges 18–55 - NCT05541016RecruitingPhase 2
Personalized lower-dose radiation for HPV-related throat cancer
This Phase 2 study tests whether giving a less intense (de-escalated) radiation plan can work for certain people with HPV-related oropharyngeal throat cancer. It uses HPV blood testing and scans to help guide treatment, aiming to keep cancer control while reducing treatment side effects.
Scottsdale, ArizonaAges 18 years+ - NCT05529264Recruiting
EEG study in adults with epilepsy and brain recordings
This study uses brain recordings to better understand epilepsy signals. It may help people who need EEG monitoring for clinical care, and it may also use healthy adults as comparison participants.
Lebanon, New HampshireAges 18 years+ - NCT05539638Recruiting
Testing blood DNA for head and neck squamous cancer
This study looks at how tumor DNA found in a blood sample (a “DNA signal”) relates to head and neck cancer in the oropharynx. It may help doctors understand disease status and improve how they monitor treatment, for both HPV-positive and HPV-negative cancers.
Dundee, DD2 1SGAges 18 years+ - NCT05505513Recruiting
Test micro-electrode nerve implants for hand signal feedback
This study looks at whether tiny implanted sensors in a nerve can record brain/nerve signals and use them to provide feedback for people with a transradial arm amputation. If it works, it could help improve control or awareness with a prosthetic hand or related devices.
Salt Lake City, UtahAges 18–65 - NCT05491512RecruitingPhase 2
Reduced radiation with chemo for HPV throat cancer
This trial tests whether giving less radiation (while using standard chemotherapy) can treat HPV-related throat cancer effectively. It may help reduce radiation exposure while still controlling the cancer.
Basking Ridge, New JerseyAges 18 years+ - NCT05492565Enrolling by invitation
Follow-up study for people on HIV prevention pills
This study follows adults who are at high risk of getting HIV while they take HIV prevention pills (PrEP). It aims to learn how well PrEP fits real-life use in people at risk and who may need extra care.
Seville, AndalusiaAges 18 years+ - NCT05480449RecruitingPhase 1/Phase 2
Personalized CAR-T for children with high-risk B-ALL
This trial studies a personalized type of immune therapy (CAR-T) made from your own cells to treat pediatric B-ALL that has returned or not responded to prior treatment. It aims to see how well this manufactured CAR-T works and how safely it can be given.
Philadelphia, PennsylvaniaAges birth–29 years - NCT05500573Recruiting
Using sperm selection to help choose your baby’s sex
This study looks at whether selecting sperm can increase the chance of having a baby of a specific sex. It is meant for couples using fertility treatments, and it may be helpful if you are trying to conceive and want to understand sperm selection options.
New York, New YorkAges 18–89 - NCT05440617Recruiting
Biobank for people having testicle-protecting cancer treatment
This study collects and stores biological samples from people who are planning to undergo OTC, a treatment used to help protect fertility during cancer therapy that can harm reproductive cells. It may help future research by providing researchers with tissue/blood samples linked to this treatment.
Bethesda, MarylandAges 4–35 - NCT05458219RecruitingPhase 1
Testing an antibody-drug treatment for solid tumors
This Phase 1 trial studies a new cancer medicine (IBI343) that targets certain tumor cells to see how safe it is and how well it may work. You may be eligible if you have advanced, hard-to-remove cancers and your tumor has a specific marker called CLDN18.2.
Austin, TexasAges 18 years+ - NCT05418868RecruitingPhase 1
Long-acting cabotegravir injection safety in healthy adults
This Phase 1 study tests how the body handles a long-acting (slow-release) cabotegravir injection combined with a drug called hyaluronidase. It also checks safety and side effects in healthy adults to help future HIV-prevention or treatment plans.
Orlando, FloridaAges 18–55 - NCT05452564RecruitingPhase 2
Baricitinib to help reduce HIV in the brain
This Phase 2 study tests baricitinib to see if it can lower HIV activity in the brain (CNS) for people already on stable HIV treatment. If you have well-controlled HIV in your blood, this trial looks for additional benefit inside the nervous system.
Atlanta, GeorgiaAges 18–65 - NCT05437198Recruiting
Breath sample study comparing lung bacteria in and out of COPD
This study looks at the germs in exhaled (breathed-out) air to compare people with COPD to people without COPD. It may help researchers better understand lung differences and what could drive COPD.
CréteilAges 18–70 - NCT05456009Recruiting
Breath analysis test for adults
This study tests how analyzing your breath can help researchers detect or understand health conditions. If you’re an adult and can safely participate, you may be able to take part and have your exhaled breath measured.
Zurich, Canton of ZurichAges 18 years+ - NCT05366361Recruiting
Study of persistent atrial fibrillation during heart procedures
This study looks at what happens in the heart in people with persistent atrial fibrillation when they undergo an ablation or Maze surgery. It may help doctors better understand the condition and improve future care for people needing these procedures.
Stanford, CaliforniaAges 22–80 - NCT05368987Recruiting
TMS for PTSD fear learning and safety memory
This study tests a brain-stimulation treatment called TMS to see if it improves how people with PTSD unlearn fear and form safer memories. It may help reduce fear responses by targeting specific fear-circuit areas in the brain.
Houston, TexasAges 18–70
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Common questions
- Are there clinical trials for humans?
- Yes. Clin2 currently lists 1,228 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.