Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 818 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07437157Recruiting
Hong Kong diabetes fatty liver disease study
This research study looks at people with type 2 diabetes to learn more about fatty liver disease. By joining, you may help doctors better understand how these conditions are linked and improve future care.
Hong Kong, New TerritoriesAges 18 years+ - NCT06560983Recruiting
Blood sugar and stroke outcomes over one year
This study watches how blood sugar levels affect recovery and risks over one year in people who come to the ER with a stroke. It aims to help doctors better manage blood sugar during emergency stroke care.
Kathmandu, BagmatiAges 18 years+ - NCT06050304Recruiting
Crack cocaine use and behavioral sensitization study
This study looks at how your body and mind might get more sensitive to crack-cocaine over time (behavioral sensitization) and what you expect from using it. Your participation helps us better understand addiction patterns.
ParisAges 18 years+ - NCT06953167Recruiting
Dementia study for older adults with prior brain checks
This study follows older adults who have already had amyloid testing, to track changes in memory and thinking over time. It helps researchers understand how to prevent dementia.
LondonAges 65 years+ - NCT07620470Recruiting
Brain Tumor Imaging Study Using Advanced CT Scans
This study examines how a specialized CT scanner (Spectral CT) captures detailed images of brain tumors. Researchers will review your imaging scans to understand how well this technology helps doctors see and understand brain tumors.
Wuhan, HubeiAges 18 years+ - NCT07781501Recruiting
Study of long-term effects of covid-19
This study looks at the long-term effects of COVID-19, sometimes called Long COVID. By studying saliva and health info, researchers hope to understand why some people have lasting symptoms.
Chapel Hill, North CarolinaAges 18–75 - NCT06862843Recruiting
Family eating habits and chronic inflammation study
This study looks at how eating habits and family health history relate to chronic inflammatory conditions like Crohn's disease, ulcerative colitis, and juvenile idiopathic arthritis. It aims to understand these links by studying families with a child or adult affected by these conditions, as well as healthy families.
Florence, ItalyAges Any age - NCT07225738Recruiting
Multiple Myeloma treatment and cannabis use study
This study follows people with newly diagnosed multiple myeloma to see how their cancer treatments and use of medications, including cannabis, affect their health. It will help doctors learn more about what works best.
Goodyear, ArizonaAges 18 years+ - NCT07478614Recruiting
Study of treatments for adenomyosis pain and heavy bleeding
This study follows people with adenomyosis to see which treatments work best for pain and heavy bleeding. It may help doctors find better ways to manage symptoms.
PotenzaAges 20–50 - NCT04766515Recruiting
Study of immune checkpoint cancer treatment in real life
This is an observational study that follows adults with solid cancer who are receiving immune checkpoint inhibitor treatments. It aims to learn how these medicines are used and what outcomes may look like in everyday care.
ShanghaiAges 18 years+ - NCT07235592Recruiting
Preserflo MicroShunt study for open-angle glaucoma
This trial is testing a small device called the PRESERFLO MicroShunt to lower eye pressure in people with open-angle glaucoma. It may be an option if your eye pressure stays high even with maximum eye drops.
ViennaAges 18–85 - 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+ - 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 - 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 - NCT04588402Recruiting
Tests whether HPV vaccination prevents cervical HPV infection in young women
This study looks at whether HPV vaccination lowers the chance of getting HPV in the cervix. It will collect cervical samples and ask questions to see how vaccination affects infection in women in Sikkim, India.
Gangtok, SikkimAges 18–22 - 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 - NCT07512518Recruiting
Study of Long-Term Viral Brain Infections
This study follows patients with chronic viral infections affecting the brain and spinal cord. Researchers will collect spinal fluid samples and track your health over one year to better understand these infections and improve care.
Beijing, Beijing MunicipalityAges 14 years+ - 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+ - NCT06962995Recruiting
Multi-cancer detection test study at Mayo Clinic
This study will collect blood samples from people who have had or are scheduled to have a multi-cancer detection test. Researchers want to learn more about how well these tests work and how the results affect follow-up care.
Scottsdale, ArizonaAges 21 years+ - NCT07517458Recruiting
Understanding anxiety before cancer surgery in hospitalized patients
This study looks at how anxious cancer patients feel before surgery and tests a new way to measure that anxiety. It's observational—meaning researchers watch and listen rather than give treatments—to help doctors better support patients emotionally before procedures.
Aviano, PordenoneAges 18 years+ - NCT07648602Recruiting
Tracking how psoriasis responds to new advanced treatments
This study follows patients with moderate to severe psoriasis who are starting a new advanced medication for the first time. Researchers will track how well the treatment works early on to understand what helps different patients improve.
Waltham, MassachusettsAges 18 years+ - NCT07615712Recruiting
Tracking psoriasis treatment response with a new medication
This study follows people starting a new advanced psoriasis treatment to see how well it works over 16 weeks. You'll have three office visits with your dermatologist, and researchers will track your skin improvement to help understand which treatments work best for different patients.
Waltham, MassachusettsAges 18 years+ - NCT06902545Recruiting
Safety study of VYLOY for stomach or GEJ cancer in South Korea
This study monitors the safety of VYLOY (a cancer medicine) given to people in South Korea with stomach or gastroesophageal junction cancer. It helps doctors learn more about real-world side effects and how well patients do on treatment.
Goyang-si, Gyeonggi-doAges Any age - NCT05909761Recruiting
Pregnancy Uplizna safety study in women with NMOSD
This is an observational study that looks at the safety of Uplizna (satralizumab) during pregnancy for women who have neuromyelitis optica spectrum disorder (NMOSD). You may be asked to share information because your exposure to Uplizna happened during pregnancy or just before conception.
Aurora, ColoradoAges 15 years+
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Common questions
- Are there clinical trials for observational study?
- Yes. Clin2 currently lists 818 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.