Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 839 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07769892Recruiting
Blood and stool test for digestive tract cancer screening
This study is testing a new way to screen for cancers of the digestive tract using a simple blood and stool test. It is for people who are already scheduled to have a digestive tract endoscopy, and it may help find cancers earlier without extra invasive procedures.
Zhaoqing, GuangdongAges 45–74 - NCT07764562Recruiting
Ultrasound risk score for jugular vein catheter placement
This study creates a simple score to predict how easy or hard it will be to place a central line in your neck using ultrasound. The goal is to help doctors plan safer and more successful procedures.
AntalyaAges 18 years+ - NCT06192563Recruiting
Dupilumab for severe eczema with limited skin rash
This study looks at how well dupilumab works for children and teens with severe eczema (atopic dermatitis) even when the rash is not widespread. It aims to see if the treatment helps with itching, quality of life, and rashes in visible or sensitive areas.
BolognaAges 6 months–17 years - NCT07481526Recruiting
Chronic kidney disease registry study
This study is collecting information from people with chronic kidney disease (CKD) to understand how the disease progresses over time. It does not test any new treatments, so you keep your usual care.
Anning, Yunnan - South RegionAges Any age - NCT06431347Recruiting
Study on social factors in transplant care
This study looks at how social and financial challenges affect people getting a transplant or cell therapy at MD Anderson. Researchers want to talk to patients and their caregivers to better understand these challenges and improve care.
Houston, TexasAges 18 years+ - NCT05903261Recruiting
Study of targeted radiation for rare cancers with limited spread
This observational study follows people with rare solid tumors and a limited number of metastases treated with a focused radiation technique (SBRT). Doctors want to see outcomes after using a strong, curative-intent radiation dose to all active spots.
Rozzano, MilanAges 18 years+ - NCT04220905Recruiting
Watching outcomes after removing large colon and duodenal polyps
This observational study follows people who have large polyps in the colon or duodenum that are removed during endoscopy. It aims to understand how safe and effective this approach is, and what outcomes patients have afterward.
White River Junction, VermontAges 18 years+ - NCT06521229Recruiting
Study of uncontrolled mild to moderate asthma in Russia
This study is for adults with mild to moderate asthma that is not well controlled. Researchers will look at medical records to understand what treatments people are using and what their health is like over time.
AstrakhanAges Any age - NCT05820776Recruiting
Tele-rehabilitation for stable breathing problems
This observational study looks at how tele-rehabilitation affects people with stable chronic breathing problems, especially if breathing limits their activity. It may help your care team understand what kinds of support work best when symptoms are steady.
Toronto, OntarioAges 18 years+ - NCT06839547Recruiting
Testing a new drug with radiation for advanced breast cancer brain tumors
This study looks at how well a new anti-tumor drug works when given along with radiation therapy for people whose advanced breast cancer has spread to the brain. It may help the radiation work better and control the cancer longer.
BeijingAges 18 years+ - NCT06776861Recruiting
Radiation plus immunotherapy for advanced breast cancer
This study looks at combining radiation therapy with immunotherapy for advanced breast cancer that has spread or cannot be surgically removed. The goal is to see if adding radiation after treatment helps improve outcomes.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05539105Recruiting
Watching recovery after surgery for upper stomach cancer
This study keeps track of how people recover after surgery to remove the upper part of the stomach and nearby lymph nodes. It mainly helps doctors understand which surgical reconstruction methods work best and how patients do over time.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT06512571Recruiting
Heart changes in Fabry disease: an observational study
This study looks at people with Fabry disease, a genetic condition that can cause the heart muscle to thicken. Researchers want to understand how the heart's blood vessels change over time, which may help improve care for Fabry disease.
BeijingAges 18 years+ - NCT06498947Recruiting
Understanding Natural Farsightedness in Kids
This study looks at natural changes in children's eyes that cause mild farsightedness (called "physiological hyperopia") in 6- to 9-year-olds. It aims to understand why some children have this harmless vision difference, which may help with future eye care.
Beijing, Beijing MunicipalityAges 6–9 - NCT07729319Recruiting
Heat and moisture during lung surgery: a study
This study looks at whether a special device that adds heat and moisture to the air you breathe during surgery can help people who have lung surgery through small incisions (VATS). If you are having planned lung surgery that requires one-lung ventilation, you may be able to join.
Istanbul, IstanbulAges 18–75 - NCT07585097Recruiting
Long-term Safety Study of Odevixibat for Alagille Syndrome
This study follows patients with Alagille syndrome who are taking odevixibat to see how safe the medicine is over time. Alagille syndrome is a rare liver disease that affects bile flow, and odevixibat is a treatment that may help reduce itching and improve liver function.
BronAges 6 months+ - NCT07734363Recruiting
How Cravings Affect Addiction Severity Over Time
This trial is a longitudinal study that tracks how cravings (strong urges to use) affect a person's addiction over time. It may help researchers understand how cravings lead to more severe addiction, which could improve future treatments.
BordeauxAges 18 years+ - NCT07330258Recruiting
Observing Parkinson's over time in people still having movement symptoms
This study follows people with Parkinson's disease who still have movement symptoms despite taking medication. It aims to understand how the disease changes over time, which could help improve future treatments.
Phoenix, ArizonaAges 45–75 - NCT07711951Recruiting
Bypass surgery times and ICU stay length
This study looks at how long people stay in the intensive care unit after planned coronary artery bypass surgery. It checks if the time spent on the heart-lung machine or with the aorta clamped affects recovery.
Diyarbakır, Outside of the USAges 18 years+ - NCT06564974Recruiting
Long-term safety study of Agamree for Duchenne muscular dystrophy
This study watches boys with Duchenne muscular dystrophy who are already taking Agamree (vamorolone) to see how safe it is over a long period. It helps doctors understand the medicine's effects over time.
Phoenix, ArizonaAges 2 years+ - NCT07288515Recruiting
Acalabrutinib for CLL in routine care
This study follows people with CLL who are starting acalabrutinib (a targeted pill) for the first time, either as their first treatment or after previous therapies. The goal is to see how well it works in everyday medical practice.
GrodnoAges 18 years+ - NCT07299981Recruiting
Brain water changes after clot-busting drug for stroke
This study looks at how much water builds up in brain tissue after a stroke is treated with a clot-busting drug. It may help doctors understand who will recover better.
ViennaAges 18 years+ - NCT04114578Recruiting
Study of babies and children with diaphragm hernia
This is an observational study that follows babies and children with congenital diaphragm hernia (CDH) to learn more about their health and care over time. It may help doctors better understand which factors affect outcomes.
Montreal, QuebecAges Up to 17 years - NCT04424992Recruiting
Observing hospitalized adults with COVID-19 lung infection
This study follows adults who are hospitalized with COVID-19 in the lungs. The goal is to better understand how COVID-19 behaves in the hospital over time.
MonzaAges 18 years+
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Common questions
- Are there clinical trials for observational study?
- Yes. Clin2 currently lists 839 recruiting observational study 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 observational study 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 observational study 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.