Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 824 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06486779Recruiting
Study of Kesimpta in Greek MS Patients
This study watches how well Kesimpta (ofatumumab) works for people with relapsing multiple sclerosis over time. It collects information from routine doctor visits and scans to see if the treatment is controlling the disease.
Athens, AtticaAges 18–55 - NCT06492538Recruiting
Eye changes after glaucoma angle surgery
This study looks at how your eye's drainage angle changes after glaucoma surgery. It helps doctors understand what happens to the front part of your eye after procedures like laser or surgery to open the drainage area.
Guangzhou, GuangdongAges 30–85 - NCT06449742Recruiting
AI to find spine fractures on CT scans
This study is testing whether an artificial intelligence program can find broken bones in the spine (vertebral fractures) by looking at CT scans of the chest or abdomen. The goal is to see if AI can help doctors spot these fractures more easily, which could lead to earlier treatment.
Milan, ItalyAges 50 years+ - NCT06429280Recruiting
Lazy Eye Treatment Registry for Luminopia Users
This registry collects information from people with lazy eye who have used Luminopia treatment for at least 12 weeks. It helps researchers learn more about how the treatment works in real life.
San Ramon, CaliforniaAges Any age - NCT06435000Recruiting
A study tracking Stargardt disease progression
This study follows people with Stargardt disease (a genetic eye condition that causes vision loss) over time. It aims to learn more about how the disease progresses and does not test any treatment.
San Diego, CaliforniaAges 12–65 - NCT06422871Recruiting
Observing HeRO Graft and Super HeRO in dialysis patients
This study is tracking how well the HeRO Graft and Super HeRO work for people on dialysis. If you already have one of these devices, joining helps doctors see how it performs over time.
Washington D.C., District of ColumbiaAges 18 years+ - NCT06021483Recruiting
Observing safety and effectiveness of Zepzelca for lung cancer
This study tracks how safe and effective the drug Zepzelca (a chemotherapy) is for people with advanced small cell lung cancer that has not responded to earlier platinum-based chemo. It allows patients to receive the drug as part of their normal care while researchers collect data.
SeoulAges 19 years+ - NCT06398626Recruiting
Observational study of etrasimod for ulcerative colitis
This study watches how well etrasimod works for adults with moderate to severe ulcerative colitis (UC). You must already be prescribed etrasimod by your doctor, and the study collects information through a web-based tool.
Mesa, ArizonaAges 18–64 - NCT06376760Recruiting
Anesthetic dose changes for insomnia patients during endoscopy
This study looks at how insomnia affects the amount of anesthesia needed during a digestive endoscopy. It compares people with insomnia to those with normal sleep to see if dosage adjustments are needed.
Beijing, Beijing MunicipalityAges 18–64 - NCT06017518Recruiting
Watching local relapse after high-grade osteosarcoma treatment
This study is watching people whose high-grade osteosarcoma came back in the same bone area (local relapse) after treatment. It helps doctors understand how local relapse happens, so they can improve future care.
Bologna, BOAges Any age - NCT06334120Recruiting
Darolutamide safety study for men with prostate cancer in Korea
This study tracks the safety of the drug darolutamide in Korean men with a type of prostate cancer that has not spread (non-metastatic) or has spread (metastatic) and is still responding to hormone therapy. It aims to see how well patients tolerate the drug in real-world settings.
Multiple LocationsAges 19 years+ - NCT05332288Recruiting
Observing treatment outcomes for a knee cartilage defect
This observational study follows people with a specific knee cartilage injury from osteochondritis dissecans (OCD) to see how they do after standard care and rehab. It may help doctors understand which patients benefit most and what changes happen over follow-up.
BolognaAges 15–40 - NCT06315556Recruiting
Study of Eylea for preterm babies with retinopathy of prematurity in the UK
This study collects information on how the medicine Eylea is given to preterm babies with retinopathy of prematurity (an eye problem in premature infants) using a special dosing device. The goal is to see how the treatment works in everyday hospital care.
Multiple LocationsAges Up to 1 year - NCT06308055Recruiting
Impella heart pump study in ICU
This study is for people in the intensive care unit who are using a heart pump called Impella. It will collect information about how well the heart pumps blood during treatment to help doctors learn more.
Aachen, North Rhine-WestphaliaAges 18 years+ - NCT06280755Recruiting
AI-assisted MS care study
This study looks at how artificial intelligence (AI) can help doctors care for people with multiple sclerosis (MS) and other similar conditions. It uses existing medical data to see if AI can improve treatment decisions.
Prague, Praha 2Ages 18 years+ - NCT06278207Recruiting
Finerenone in real-world diabetes and kidney disease
This study looks at how the medication finerenone works in everyday medical practice for people with type 2 diabetes and certain stages of chronic kidney disease. It aims to see how safe and effective the treatment is outside of a clinical trial setting.
Multiple Locations, New JerseyAges 18 years+ - NCT06282718Recruiting
Observational study of respiratory infections in primary care
This study tracks how patients with respiratory infections (like bronchitis, sore throats, or COVID-19) are treated in family doctor offices across Europe. The goal is to learn more about these infections and improve care. You may be able to join if you have a cough, sore throat, or other symptoms that suggest a respiratory infection, and you go to a participating clinic.
AntwerpAges Any age - NCT06034509Recruiting
Thinking and blood vessel health after head injury
This study looks at how a past traumatic brain injury (TBI) might affect your thinking skills and blood vessel health over time. You may be eligible if you had a TBI at least 3 years ago and have already completed an earlier evaluation at the National Intrepid Center of Excellence (NICoE).
Bethesda, MarylandAges 18–74 - NCT05943652Recruiting
Study of how functional overlay affects movement disorders
This study looks at movement disorders that are functional (not caused by damage to the nervous system) or non-functional, and how a “functional overlay” may change symptoms. It is observational, meaning it does not test a new treatment, but it may help researchers better understand these differences and improve care.
Graz, StyriaAges 18–18 - NCT06271330Recruiting
Switching older injections to faricimab for wet AMD
This study looks at people with wet AMD who have been getting regular eye injections of either aflibercept or ranibizumab for over a year. The goal is to see what happens when they switch to a newer injection called faricimab.
Nantes, NantesAges 18 years+ - NCT06270719Enrolling by invitation
Comparing ELEVIDYS to standard care for Duchenne muscular dystrophy
This study compares the gene therapy ELEVIDYS (delandistrogene moxeparvovec) to usual treatments for people with Duchenne muscular dystrophy (DMD). It helps researchers understand how well ELEVIDYS works over time in real-world settings.
Little Rock, ArkansasAges 4 years+ - NCT06241729Recruiting
Observation of first-time DLBCL treatment at Charleroi hospital
This study is watching how people with newly diagnosed diffuse large B cell lymphoma (a blood cancer) are treated for the first time at Grand Hôpital de Charleroi. It collects information to help doctors learn more about the disease and its care.
Charleroi, HainautAges 18 years+ - NCT06206135Recruiting
Nephoxil capsule safety study for kidney dialysis patients
This study follows kidney dialysis patients who are starting a new medicine called Nephoxil to lower high phosphorus levels in the blood. The study will check how safe and effective the medicine is over 48 weeks.
JeonjuAges 19 years+ - NCT06189092Recruiting
Electrosclerotherapy for low-flow venous malformations
This study is testing a treatment called electrosclerotherapy for low-flow venous malformations. It uses a medicine (bleomycin) injected into the abnormal blood vessels to shrink them. The goal is to see how well it works and how safe it is.
Bologna, Emilia-RomagnaAges 16 years+
Hear when a new Observational Study 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 observational study?
- Yes. Clin2 currently lists 824 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.