Clinical trials
High Risk clinical trials
Below are recruiting high risk clinical trials, each written for real people, not researchers. We’re tracking 923 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT02437981Enrolling by invitation
PrEP for HIV prevention in high-risk adults in Thailand
This trial checks how well PrEP pills (TDF/FTC) prevent HIV in people who are at high risk and are HIV-negative. It may help you understand whether PrEP is a good prevention option for your situation.
Bangkok, PathumwanAges 18 years+ - NCT00796146Recruiting
Study people newly infected with HIV to learn early changes
This study enrolls adults with a very recent (“acute”) HIV infection to follow them over time and better understand what happens early after infection. Your participation may help researchers improve how acute HIV is detected and managed.
Bangkok, BangkokAges 18 years+ - NCT04428671RecruitingPhase 1
Cemiplimab before and after surgery for high-risk skin cancer
This Phase 1 trial tests the drug cemiplimab given before and after surgery to reduce the chance that high-risk cutaneous squamous cell cancer comes back. You may be a candidate if your cancer is high-risk on pathology or imaging and is planned for surgical removal.
Atlanta, GeorgiaAges 18 years+ - NCT04661020RecruitingPhase 2
CD19 CAR-T for newly diagnosed high-risk large B-cell lymphoma
This study tests a customized cancer treatment called CD19 CAR-T for people newly diagnosed with certain high-risk large B-cell lymphoma. It aims to see whether this treatment can help control the lymphoma, especially in higher-risk cases.
Hangzhou, ZhejiangAges 18 years+ - NCT03849443RecruitingEarly Phase 1
Testing tranexamic acid to reduce bleeding after spine fusion
This trial studies whether a single dose or multiple doses of tranexamic acid (TXA) can reduce the chance you need a blood transfusion after spine fusion surgery. It also compares two different ways TXA may be given (by mouth and through a vein) to see which approach works best and is safe.
Chicago, IllinoisAges 18 years+ - NCT04266574Recruiting
Blood pressure–guided care for older or frail surgical patients
This study tests a goal-based blood pressure treatment approach during major surgery for people at higher risk (often older or frail with high blood pressure). The goal is to see if this BRAIN-targeted strategy can improve how patients do after surgery.
Rozzano, MilanAges 18 years+ - NCT06812039RecruitingPhase 2
Perioperative treatment for high-risk liver cancer using HAIC, donafenib, and sintilimab
This trial tests a combination of treatments—chemotherapy delivered through the liver artery (HAIC), a targeted drug (donafenib), and an immunotherapy (sintilimab)—given before and after surgery for liver cancer that has a high chance of coming back. The goal is to see if this approach can lower the risk of recurrence.
Fuzhou, FujianAges 18–75 - NCT06798558RecruitingPhase 2
Lu-PSMA before prostate surgery for high-risk cancer
This trial tests a treatment called Lu-177-PSMA-617 given before surgery for high-risk prostate cancer that has spread only to nearby lymph nodes. It aims to see if this approach helps control the cancer before the prostate is removed.
Washington D.C., District of ColumbiaAges 18 years+ - NCT06044857RecruitingPhase 1
PSMA PET-guided radiation for high-risk prostate cancer
This trial tests a new way to plan radiation for high-risk prostate cancer. Doctors will use a special PET scan (PSMA PET) to find the main tumor inside the prostate and give it a stronger dose of radiation, along with standard hormone therapy. This approach might improve outcomes for patients with aggressive disease.
Dallas, TexasAges 18–99 - NCT04469530RecruitingPhase 2
Sirolimus plus low-dose chemotherapy for high-risk childhood tumors
This Phase 2 study tests whether sirolimus combined with low-dose (“metronomic”) chemotherapy can help children and young adults with certain high-risk solid tumors stay in remission or reduce recurrence risk. It is designed for people whose cancer has responded well to initial treatment, with only minimal or no visible disease on scans.
Atlanta, GeorgiaAges 1–30 - NCT05852223RecruitingPhase 2
Pembrolizumab for high-risk thyroid cancer that cannot be fully removed
This study tests pembrolizumab (an immune therapy) in people with high-risk thyroid cancer that is hard to treat with surgery alone. It looks at whether this drug can reduce persistent or recurrent cancer after your planned treatment.
Pavia, LombardyAges 18 years+ - NCT06156943Recruiting
Fluid monitoring during lung surgery for high-risk patients
This study tests a new way to monitor your body's fluid levels during lung surgery, especially for patients who are at higher risk for complications. The goal is to improve recovery and reduce problems after surgery.
BronAges 18–80 - NCT06079671RecruitingPhase 3
Volrustomig for high-risk locally advanced cervical cancer
This trial tests a new medicine called volrustomig for women with locally advanced cervical cancer that has not spread. It is given along with standard chemoradiation and aims to improve outcomes.
Birmingham, AlabamaAges 15 years+ - 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 - NCT06348264RecruitingPhase 2
Rezvilutamide with hormone therapy for high-risk salivary duct cancer
This trial tests a new drug, Rezvilutamide, combined with standard hormone therapy for people with a rare and aggressive type of salivary gland cancer that has a high risk of coming back. The treatment aims to reduce the chance of cancer returning after surgery.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06120387Recruiting
Radiation after kidney-sparing surgery for high-risk ureteral cancer
This trial tests whether adding radiation therapy after surgery that removes only part of the ureter or the entire kidney and ureter helps prevent cancer from coming back in patients who have high-risk features like aggressive cell type or deep tumor invasion.
BeijingAges 18 years+ - NCT06210490RecruitingPhase 2
Antibody-drug combo with radiation for HER2+ UTUC after surgery
This trial tests a combination of an antibody-drug conjugate (Disitamab Vedotin) plus radiation therapy after surgery to prevent upper tract urothelial cancer from coming back. It is for patients with HER2-positive tumors and high-risk features who cannot receive cisplatin chemo.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06833827Recruiting
Clot removal vs clot-busting drugs for severe lung clots
This study compares two ways to treat a large blood clot in the lungs that is causing life-threatening symptoms. One method uses a device to remove the clot, the other uses medicine to dissolve it.
Leiden, South HollandAges 18 years+ - NCT06335420Recruiting
Can carrot juice prevent colon polyps from coming back?
This study tests whether drinking carrot juice every day can lower the chance that large colon polyps or early colon cancers will come back. Researchers want to see if the nutrients in carrot juice help protect the lining of the colon.
OdenseAges 18 years+ - NCT06221670RecruitingPhase 2
Toripalimab after surgery for high-risk early lung cancer
This trial tests whether giving a drug called Toripalimab after surgery can help prevent early-stage non-squamous non-small cell lung cancer from coming back. It is for people whose tumors have high-risk features and PD-L1 levels of at least 1%.
Tianjin, Tianjin MunicipalityAges 18 years+ - NCT02446431RecruitingEarly Phase 1
Low-dose cancer medicine for children with sarcoma at high risk
This early-phase study tests a continuous, low-dose (“metronomic”) cancer medicine to help delay cancer coming back in children and young adults with certain sarcomas. You must have finished first-line treatment and currently be in remission, starting the study soon after treatment ends.
Long Beach, CaliforniaAges 1–31 - NCT07543380RecruitingPhase 3
RSV vaccine safety and immune response in high-risk adults
This study tests a new RSV vaccine designed to protect adults with chronic health conditions from severe RSV disease (a respiratory infection). Researchers will monitor how safe the vaccine is and how well your immune system responds to it.
Tsuchiura, IbarakiAges 18–59 - NCT06499870RecruitingPhase 2
Study of two drugs with radiation for high-risk prostate cancer
This trial tests whether combining two hormone therapy drugs, relugolix and enzalutamide, with radiation therapy can help treat very high-risk prostate cancer. The goal is to see if this combination is safe and effective for men whose cancer has a high chance of coming back.
Chicago, IllinoisAges 18 years+ - NCT07552805Recruiting
Home monitoring device after major digestive surgery
This study tests a wearable patch called Multisense that monitors your health at home after major gastrointestinal surgery. It's designed to catch problems early so you can stay safe and avoid returning to the hospital.
Nice, Alpes-MaritimesAges 18 years+
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Common questions
- Are there clinical trials for high risk?
- Yes. Clin2 currently lists 923 recruiting high risk 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 high risk 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 high risk 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.