Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 845 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - 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+ - 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+ - NCT07528807Recruiting
Exercise, Pain Beliefs, and Activity in Musculoskeletal Pain
This study explores how exercise, your beliefs about pain, and your daily activity patterns affect musculoskeletal pain (pain in muscles, joints, or bones). Researchers want to understand these connections better to potentially improve pain management and help people stay active.
IstanbulAges 18–65 - NCT07529197Recruiting
Study of Immunoadsorption Treatment for Post-Infectious ME/CFS
This study observes how a blood-cleaning treatment called immunoadsorption works in patients with ME/CFS (severe fatigue condition) who have specific immune markers. Researchers will track whether this treatment helps reduce symptoms and improve daily functioning.
Berlin, State of BerlinAges 18–65 - NCT07535385Recruiting
Kidney Artery Blocking Treatment for Polycystic Kidney Disease
This study follows patients with a genetic kidney disease (autosomal dominant polycystic kidney disease) who are on dialysis and receive a procedure to block blood flow to their enlarged kidneys. Researchers will track how well the procedure works and how it affects patients over time using imaging scans.
Pavia, LombardyAges 18–75 - NCT07536841Recruiting
Testing New Criteria for Autoimmune Pancreas Inflammation
This study validates a new diagnostic tool (Odesa Criteria 2026) to help doctors accurately identify autoimmune pancreatitis—a rare condition where the body attacks the pancreas. If you're being evaluated for possible pancreas inflammation, this trial may help confirm whether you have this specific type.
OdesaAges 18 years+ - NCT07539727Recruiting
Intestinal ultrasound to predict Crohn's disease flare-ups
This study tests whether a special ultrasound of the intestines can predict when Crohn's disease will flare up again in patients whose disease is currently well-controlled. If successful, doctors could catch flare-ups earlier and adjust treatment before symptoms worsen.
Guangzhou, GuangdongAges 18–70 - NCT07542496Recruiting
Real-world study of breast cancer treatment with pertuzumab biosimilar
This study observes how a biosimilar version of pertuzumab (a targeted breast cancer drug) works in real-world patients. Researchers will track outcomes in patients receiving this drug either before surgery or as a first treatment for advanced breast cancer.
AlgiersAges 19 years+ - NCT07548944Recruiting
How Electrical Stimulation Affects Your Vision
This study watches how a treatment called transcorneal electrical stimulation (TES)—which uses gentle electrical pulses on your eye—affects your vision in the short term. You'll be observed while using the OkuStim device, and researchers will ask about any improvements you notice in your sight.
Frankfurt am MainAges 18 years+ - NCT07551466Recruiting
AI tool to detect early stomach cancer from endoscopy images
This study tests an artificial intelligence tool that analyzes images taken during stomach endoscopy to help diagnose early-stage stomach cancer or precancerous changes. The goal is to improve how doctors identify and treat these lesions early, when treatment is most effective.
SuzhouAges 18–80 - NCT07560423Recruiting
Cancer Care Satisfaction in Day Hospital Assessment
This study asks cancer patients about their experience during a comprehensive cancer care planning visit at a day hospital. Researchers want to understand how satisfied patients are with the multidisciplinary team (doctors from different specialties working together) and the care planning process.
Martigues, Bouches du RhoneAges 18 years+ - NCT07566975Recruiting
How VEVYE Helps Dry Eye in Neuro-Eye Patients
This study tracks whether VEVYE®, a prescription eye drop, reduces dry eye symptoms and signs in people who have both a neuro-ophthalmic condition (a nerve or brain issue affecting the eyes) and dry eye disease. You'll visit the clinic for 6 months and answer questions about your eye comfort.
Houston, TexasAges 18 years+ - NCT07567131Recruiting
Understanding sun sensitivity in rare porphyria disorders
This study tracks how your body reacts to sunlight if you have erythropoietic protoporphyria (EPP) or X-linked protoporphyria (XLP)—rare genetic conditions that cause painful skin reactions to sun exposure. Researchers will use special devices and daily logs to better understand your symptoms and how light affects your skin.
Boston, MassachusettsAges 12 years+ - NCT07587229Recruiting
Predicting chemotherapy response in gastric cancer
This research study analyzes tumor tissue samples to understand why some patients respond better to chemotherapy after gastric cancer surgery. By studying how genes are processed in cancer cells, researchers hope to predict which patients will benefit most from treatment.
Duarte, CaliforniaAges 18 years+ - NCT07588178Recruiting
Sleep Problems Before Heart Surgery: Study on Recovery
This research examines how sleep issues before heart surgery may affect how well patients recover afterward. Researchers will study blood markers and chemical changes to better understand this connection and potentially improve surgical outcomes.
Beijing, Beijing MunicipalityAges 18–80 - NCT07599332Recruiting
Study of Baby Weight Checks After Birth
This study watches when and how often newborn babies are weighed in the first days after birth. Researchers want to understand the best timing for these weight checks to help babies stay healthy.
IpswichAges 16 years+ - NCT07620353Recruiting
Study of OROSEDAL for sore throat and mouth sores
This study observes how well OROSEDAL, a topical oral medication, works for sore throats and minor mouth ulcers or sores that have lasted less than 15 days. You'll be asked to track your pain relief while using the product your doctor prescribes.
Multiple LocationsAges 8 years+ - NCT07633483Recruiting
Anxiety and Frailty in Older Adults Having Hip Replacement
This study watches how nervous patients feel before hip replacement surgery and how that connects to their overall strength and ability to bounce back. Researchers want to understand whether anxiety levels and frailty affect each other in older adults.
Istanbul, IstanbulAges 65 years+ - NCT07635641Recruiting
Proton Therapy for Recurring Head and Neck Cancer
This study tracks how well proton therapy (a precise radiation treatment) works when head and neck cancer comes back after previous treatment. Proton therapy uses high-energy particles instead of traditional X-rays, which may reduce side effects.
Rozzano, MilanoAges 18 years+ - NCT07644117Recruiting
Personalized Anti-TNF Treatment for Inflammatory Bowel Disease
This trial tests a personalized approach to starting anti-TNF therapy—a common treatment for inflammatory bowel disease (IBD)—in patients who have never taken it before. The goal is to help doctors choose the right anti-TNF medication and dose based on each patient's individual characteristics.
Tel AvivAges 18 years+ - NCT07652489Recruiting
Surgery plus radiation for advanced sinus cancer
This study looks at whether surgery followed by radiation helps people with a specific type of sinus cancer called adenoid cystic carcinoma that has grown into nearby tissues. It aims to see how well this treatment works and how safe it is.
Harbin, HeilongjiangAges 18–80 - NCT07669493Recruiting
Heart safety during chest radiation for cancer patients
This study looks at how chest radiation affects heart function and the immune system, and whether it is safe in people with lung, esophageal, breast, or thymus cancer who have not had chest radiation before.
Shijiazhuang, HebeiAges 18 years+ - NCT07654634Enrolling by invitation
Precision blood thinning therapy study
This trial tests personalized blood thinner treatment for people who need long-term anticoagulation for conditions like atrial fibrillation or blood clots. The goal is to find the safest and most effective dose for each patient.
Changsha, HunanAges 8 years+
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Common questions
- Are there clinical trials for observational study?
- Yes. Clin2 currently lists 845 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.