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
- NCT05099315Recruiting
Gut microbiome study in adults with severe eczema
This trial studies the gut microbiome in people with moderate to severe atopic dermatitis (eczema) who are starting or already receiving systemic (whole-body) treatment. It may help researchers understand what changes in gut bacteria are linked to eczema and to treatment response.
Berlin, State of BerlinAges 18 years+ - NCT05632978Recruiting
Study of epilepsy using real-world patient data
This is an observational study that looks at how epilepsy is diagnosed and how people do over time, using information from routine care. It may help doctors better understand epilepsy biology and outcomes using real-world data.
CardiffAges 16 years+ - NCT07404644Recruiting
Study of vonicog alfa in children with von Willebrand disease
This study looks at how well vonicog alfa (a lab-made version of a missing blood protein) works to control bleeding in children under 18 with von Willebrand disease. It follows children who are already prescribed this treatment in Japan to see how safe and effective it is in real life.
Tokyo, TokyoAges Up to 17 years - NCT07400354Recruiting
PD-1 drug plus chemo for advanced stomach cancer based on gut bacteria
This trial tests if adding a PD-1 immunotherapy drug to standard chemotherapy works better for advanced stomach cancer, and looks at how your gut bacteria may affect treatment. It is for people who have not had chemotherapy before and are starting their first treatment.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07398079Recruiting
Wellness program for breast and gynecological cancer survivors
This study explores whether a structured wellness program can help breast and gynecological cancer survivors feel better after their main treatments. It looks at how an integrative approach, which may include complementary therapies, supports your recovery and quality of life.
BaselAges 18 years+ - NCT06826820Recruiting
Fertility and infection study
This study looks at how infections and inflammation might affect fertility in women. It aims to better understand these connections to help improve treatment and care.
GrazAges 18 years+ - NCT07396064Recruiting
Using a cancer care app to help underserved patients
This trial tests a remote monitoring platform (app and home devices) to improve care for cancer patients with limited access to healthcare. It aims to help people who face barriers like not speaking English or having only government insurance.
Columbus, OhioAges 18 years+ - NCT07397390Enrolling by invitation
Study of a new scoring balloon for leg artery blockages with heavy calcium buildup
This study tests a new balloon device that scores the artery walls to treat leg artery blockages with heavy calcium deposits. It aims to see if the device helps prepare the vessel safely and effectively before placing a stent.
Dalian, LiaoningAges 18–85 - NCT06807853Recruiting
Tracking movement with a smartwatch for spine arthritis
This study uses a smartwatch to track your movement and give you exercise advice. It aims to help people with axial spondyloarthritis stay active and manage their condition.
Bonn, North Rhine-WestphaliaAges 18 years+ - NCT05677243Recruiting
Observational study of radiosurgery for trigeminal neuralgia pain
This study follows people with trigeminal neuralgia to see how radiosurgery treatment affects their facial pain. It may help doctors better understand who benefits when medicines do not control the pain enough.
MonacoAges 18 years+ - NCT06758492Recruiting
Video vs direct laryngoscopy for surfactant in newborns
This study compares two ways of placing a thin tube into a newborn's windpipe to give surfactant—a medicine that helps their lungs work better. It will help doctors understand which method is safer and easier for babies needing this treatment.
RijekaAges birth–4 weeks - NCT07382986Recruiting
COPD care in China
This study is a long-term patient registry collecting health information from people with COPD (chronic obstructive pulmonary disease) in China. Joining means you will receive regular check-ups and your doctor can track your condition over time, which may help improve management of your disease.
Hebi, HenanAges 40–85 - NCT07383298Enrolling by invitation
Lower dose of olverembatinib for chronic myeloid leukemia
This study looks at whether lowering the dose of olverembatinib (from 30 or 40 mg to 20 mg every other day) keeps working well for people with chronic myeloid leukemia who have already had a good response. It aims to see if a lower dose can still control the cancer while possibly reducing side effects.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07372170Recruiting
Blood thinners for preventing another clot in low-risk APS
This study looks at how well blood thinners prevent blood clots from coming back in people with antiphospholipid syndrome (APS) who are considered low risk. It compares two types of medicines: direct oral anticoagulants (DOACs) and vitamin K antagonists.
Madrid, MadridAges 18 years+ - NCT07370714Recruiting
Study on wound healing after pilonidal sinus surgery
This study looks at factors that may affect wound healing after surgery for pilonidal sinus disease. It aims to help doctors and patients understand what might cause the wound to open up, so they can take steps to prevent it.
Ankara, AnkaraAges 18 years+ - NCT07368465Recruiting
What affects weight gain in late pregnancy?
This study looks at how your physical activity, eating habits, and anxiety levels may affect how much weight you gain during pregnancy. It aims to find ways to support healthy weight gain for you and your baby.
IstanbulAges 18–45 - NCT07362225Recruiting
MPN Progress Registry: Tracking Symptoms and Progression
This observational registry tracks symptoms, treatments, and disease changes over time in people diagnosed with myeloproliferative neoplasms (MPNs). By joining, you help doctors learn more about the condition and possibly contribute to better future care.
Chicago, IllinoisAges 18 years+ - NCT07363278Recruiting
Study of a new device for atrial fibrillation ablation
This study looks at how often silent brain lesions happen after a new type of heart procedure for atrial fibrillation (an irregular heartbeat). The procedure uses a device called the Varipulse catheter to help fix the heart's rhythm.
Seoul, Jongro-kuAges 19 years+ - NCT07370194Recruiting
Study on high potassium levels in Brazil
This study is looking at how common high potassium levels (hyperkalaemia) are and what factors increase the risk for people with certain health conditions. It may help doctors better understand and manage this condition.
CuritibaAges 18 years+ - NCT07361276Recruiting
Observational study on high blood pressure treatment in public clinics
This study looks at how doctors treat high blood pressure in public health clinics. By reviewing medical records, researchers hope to understand what treatments are used and how well they work.
FlorianópolisAges 18 years+ - NCT06849193Recruiting
Predicting treatment outcomes in advanced bile duct cancer
This study looks at how well current chemotherapy and immunotherapy work for advanced bile duct or gallbladder cancers that cannot be removed by surgery. Researchers will collect data from multiple centers to build a model that helps predict how patients may respond to treatment.
Nanjing, JiangsuAges 18 years+ - NCT07357038Recruiting
AmBisome for fungal infections in children with blood cancer
This study follows children and teens with blood cancers who got a fungal infection while on preventive antifungal medicine. It looks at how well liposomal amphotericin B (AmBisome) works and how safe it is for them.
Tianjin, Tianjin MunicipalityAges 1 month–18 years - NCT07358754Recruiting
S100B and BDNF levels in fibromyalgia
This trial measures two brain-related proteins (S100B and BDNF) in women with fibromyalgia compared to healthy women. It aims to find out if these proteins are linked to fibromyalgia symptoms, which could lead to better understanding or new treatments.
IstanbulAges 18–50 - NCT07357324RecruitingPhase 4
Herbal medicine plus tamsulosin for better sleep after prostate surgery
This study looks at whether a Chinese herbal medicine (Lingze) combined with tamsulosin can help you sleep better and reduce nighttime urination after prostate surgery. It aims to improve your comfort and recovery.
Yiwu, ZhejiangAges 50 years+
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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.