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
- NCT06720532Recruiting
Kidney function in men with prostate cancer getting a new targeted radiation therapy
This study looks at how a targeted radiation therapy called 177Lu-PSMA affects kidney function in men with a type of advanced prostate cancer. It aims to understand risk factors to help guide safe treatment.
MunichAges 18 years+ - NCT06721624Recruiting
Natural approaches for IBS: a research study
This study observes how naturopathic treatments help people with Irritable Bowel Syndrome (IBS) or IBS-like symptoms. It aims to understand what works in real-world care.
Portland, OregonAges 18 years+ - NCT07583563Recruiting
Observational study of octreotide depot injections for acromegaly
This study watches how patients with acromegaly respond to octreotide, a medication given as injections under the skin. Researchers will collect information about how well the treatment works and any side effects you experience.
AachenAges 18 years+ - NCT06126016Recruiting
A study of Pacitol Inj. for dialysis patients with parathyroid issues
This study watches how well the drug Pacitol Inj. works and how safe it is in people on dialysis who have overactive parathyroid glands caused by kidney disease. It follows patients who are already prescribed this drug by their doctor.
Goyang-si, Gyeonggi-doAges 19 years+ - NCT06575439Recruiting
Study of lung cancer in people who have never smoked
This study looks at why some people who have never smoked develop lung cancer. Researchers will follow participants to learn about predictors and outcomes, with the goal of improving care for non-smokers with lung cancer.
LondonAges 18 years+ - NCT07561242Recruiting
Skin response to fractional laser treatments in darker skin tones
This study measures how skin changes after two types of laser treatments (gentler and stronger) on the forearm. Researchers want to understand how these lasers work on darker skin types to improve safety and results.
Shanghai, Shanghai MunicipalityAges 18–60 - 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+ - NCT04179370Recruiting
Vitamin D and health in British African-Caribbean women
This study looks at vitamin D levels and how they relate to overall health in British African-Caribbean women. It may help researchers understand whether vitamin D support or lifestyle changes could benefit this group.
GuildfordAges 18 years+ - 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+ - 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 - NCT07554469Recruiting
Study of Finerenone for Kidney Disease in Type 2 Diabetes
This observational study tracks how well finerenone (a kidney-protective medication) works in adults with type 2 diabetes and chronic kidney disease in Spain. Researchers will measure changes in kidney function and disease risk over time to better understand the medication's real-world benefits.
Many LocationsAges 18 years+ - NCT04654650Recruiting
Study of adults with pulmonary hypertension for long-term data
This study follows adults with pulmonary hypertension over the long term and collects information (and possibly samples) to better understand how the condition changes over time. It may help researchers learn what factors affect outcomes, which can improve care in the future.
Hamburg, Free and Hanseatic City of HamburgAges 18 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+ - NCT07543419Recruiting
Real-world Study of Secukinumab for Moderate to Severe Hidradenitis Suppurativa
This study tracks how secukinumab (a new medication) works for hidradenitis suppurativa—a painful skin condition with recurring boils and abscesses—in real-world patient care in Italy. Researchers want to understand treatment patterns and outcomes to help improve care for this condition.
Ancona, ANAges 18–100 - NCT07544290Enrolling by invitation
Autoimmune Hyperthyroidism Study in Young Children
This study looks at children with autoimmune hyperthyroidism (an overactive thyroid caused by the immune system attacking the thyroid gland). Researchers want to understand this condition better in children before puberty to help improve care.
Milan, ItalyAges 2–18 - NCT05501379Recruiting
Track activity in cancer patients during treatment
This study compares how physical activity answers on a questionnaire match what a motion tracker measures. It may help researchers understand activity levels in people with lymphoma, colorectal, or pancreatic cancer during treatment.
GreifswaldAges 18 years+ - NCT07538843Recruiting
Darolutamide Plus Hormone Therapy for Prostate Cancer in China
This study watches how well a drug called darolutamide works when combined with hormone therapy for men with prostate cancer that has returned after previous treatment. The goal is to understand if this combination helps prevent cancer spread and is safe to use.
Multiple LocationsAges 18 years+ - 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 - 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+ - 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 - 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 - 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+
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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.