Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 820 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07523971Recruiting
Pitavastatin/Ezetimibe for High Cholesterol and Metabolic Syndrome
This study watches how well a combination cholesterol medication (pitavastatin and ezetimibe) works in people who have high cholesterol and metabolic syndrome (a cluster of health issues including high blood pressure, blood sugar, and cholesterol). You'll be monitored over time to see if the medication helps and is safe for you.
DaejeonAges 19 years+ - NCT07522762Recruiting
Long-term life after advanced GIST on targeted drug therapy
This study follows people who have been taking targeted cancer drugs (called TKIs) for advanced GIST for at least 2 years to understand how these long-term treatments affect quality of life, side effects, and daily living. Researchers want to learn what challenges patients face and how to better support them.
Amsterdam, North HollandAges 18 years+ - NCT06758921Recruiting
Testing a catheter for leg artery blockages
This study tests a special catheter to open blocked arteries in the thigh, knee, or lower leg. It may help improve blood flow and reduce symptoms like leg pain or wounds.
GrazAges 18 years+ - NCT06758648Recruiting
Eye blood vessels in Fabry disease
This study looks at the tiny blood vessels in the eyes of people with Fabry disease using a special camera. It may help doctors understand how the disease affects the eyes over time.
München, BavariaAges 18 years+ - NCT07515599Recruiting
Study of blood pressure medicine for nighttime control
This study watches how well Olmetec (a blood pressure medicine) controls your blood pressure, especially at night. Researchers will use a special monitor you wear for 24 hours to measure your blood pressure patterns and see if the medicine is working.
SeoulAges 19 years+ - NCT06375239Recruiting
Study of tests for tracking vision in retinal disease
This study will check if certain vision tests work well in people with retinal diseases like retinitis pigmentosa or Stargardt. Results will help design future trials.
Irvine, CaliforniaAges 18 years+ - NCT07499024Recruiting
TWIST score for testicular torsion in adults with scrotal pain
This study checks how well a scoring tool (TWIST) can tell if testicular torsion is likely in adults with sudden scrotal pain. If you have sudden pain in your scrotum, you may be eligible to help test this tool in the emergency room.
Linköping, Östergötland CountyAges 18–40 - NCT07499401Recruiting
Fluid response test in ICU patients with vein congestion
This study looks at how tiny blood vessels respond to extra fluids in ICU patients who have vein congestion. It helps doctors understand if giving more fluid is helpful or harmful for you.
Ancona, ItalyAges 18 years+ - NCT07499388Recruiting
Study on blood flow during fluid therapy in ICU
This study looks at how giving fluids to critically ill patients in the ICU affects blood flow back to the heart. It helps doctors understand if giving fluids improves circulation.
AnconaAges 18 years+ - NCT07503665Recruiting
AI-assisted fall prevention study for hospital staff, patients, and families
This study explores how AI-assisted fall prevention tools work in hospitals. Researchers will interview staff, managers, patients, and family members, observe staff work, and review medical records to understand the implementation and impact.
GothenburgAges 18 years+ - NCT07506382Recruiting
Comparing two self-expanding aortic valves in TAVR
This study compares two types of self-expanding aortic valves used during a minimally invasive procedure called TAVR. It aims to see which type works better in everyday practice.
Montpellier, OccitanieAges 18 years+ - NCT07491939Recruiting
Living Well with Arthritis: A Palliative Care Study
This study explores how palliative and supportive care can help people with arthritis feel better and live well. You can join even if you are not currently receiving palliative care.
Bath, WiltshireAges 18 years+ - NCT07495735Recruiting
Predicting response to liver cancer treatment
This study is looking at how well a combination of two drugs (atezolizumab and bevacizumab) works for people with liver cancer that can't be removed by surgery. The goal is to learn how to predict the best response using lab tests and CT scans.
Wenzhou, ZhejiangAges 18 years+ - NCT07494344Recruiting
Joint replacement surgery study for bleeding disorders
This study looks at how people with inherited bleeding disorders, like hemophilia, do after joint replacement surgery. Researchers want to learn what works best for managing bleeding during and after surgery to improve recovery.
Pavia, LombardyAges 18 years+ - NCT06774690Recruiting
Arterial treatments for primary liver cancer
This study is watching how treatments that deliver medicine or tiny beads directly into the liver's blood supply work for people with liver cancer. If you have liver cancer and are getting or have gotten one of these treatments, this study wants to learn from your experience.
BolognaAges 18 years+ - NCT06775106Recruiting
Breath test to find lung infections faster
This study tests a new breath analysis method to quickly diagnose respiratory infections in ICU patients on breathing machines. If successful, it could lead to faster treatment for serious lung conditions.
Portland, OregonAges 18–120 - NCT07482124Recruiting
Registry study for patients with subarachnoid hemorrhage
This study collects information on people who have had a subarachnoid hemorrhage (a type of brain bleed) from certain causes. It helps doctors better understand the condition and improve care.
Nijmegen, GelderlandAges Any age - NCT06776874Recruiting
Predicting risks after an ERCP procedure
This observational study looks at patients who need an ERCP (a scope procedure for the bile ducts, liver, or pancreas). The goal is to create a score that can predict side effects after the procedure, which may help doctors better manage care.
BolognaAges 18 years+ - NCT06781437Recruiting
Lymphoma medical record review study
This study looks back at the medical records of people with lymphoma to learn more about the disease. It does not involve any new treatments or tests—just reviewing what happened in the past.
Bologna, BolognaAges 18 years+ - NCT07479472Recruiting
A study of digestive tract cancers in young adults
This study observes people aged 18-49 with a new gastrointestinal cancer (colorectal, stomach/esophageal, or pancreatic) to learn how their lifestyle habits and tumor characteristics affect their health. By participating, you help researchers understand why these cancers occur in younger adults.
Bologna, BOAges 18–49 - NCT05759299Recruiting
Airway management study during anesthesia with intubation
This study observes how breathing tube placement (intubation) and other airway care are done during general anesthesia in the operating room and in other anesthesia settings. It may help improve airway management practices in different clinical environments, but you would typically not receive a new treatment as part of an experimental trial.
Dallas, TexasAges 18 years+ - NCT06782789Recruiting
Study of Tafasitamab and Lenalidomide for aggressive B-cell lymphoma
This study looks back at medical records of people with relapsed or refractory diffuse large B-cell lymphoma who received a combination of two drugs (tafasitamab and lenalidomide) through a special access program. The goal is to learn how well the treatment worked and what side effects occurred.
Bologna, BolognaAges 18 years+ - NCT07464444Recruiting
Study testing a device that records heart and lung sounds
This study is testing a new device that records heart and lung sounds to see if it can help doctors better understand heart and lung conditions. You may be eligible if you have a known heart condition or if you are generally healthy, and if you've had or will have an echocardiogram (heart ultrasound) in the last or next year.
Montreal, QuebecAges 18–100 - NCT05835349Recruiting
Study of Venus P-Valve for lung valve problems
This observational study follows people who need a pulmonary valve treatment, to see how the Venus P-Valve works in real-world care. It may help doctors understand which patients benefit and how outcomes change over time.
Pessac, New AquitaineAges 12–70
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Common questions
- Are there clinical trials for observational study?
- Yes. Clin2 currently lists 820 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.