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
- NCT06607588Recruiting
Studying HIV drug resistance in Mozambique
This study looks for HIV drug resistance in people who have been on a specific first-line HIV medication (TLD) for at least 6 months and still have detectable virus. It aims to understand if resistance is developing so that better treatments can be planned.
ChokwéAges 18 years+ - NCT07094737Recruiting
Cardiac rehabilitation for heart attack and heart failure recovery
This study tracks patients with heart disease or heart failure who are in cardiac rehabilitation. The goal is to understand how well these programs work in real life and improve care for future patients.
MilanAges 18 years+ - NCT07091604Recruiting
Looking at skin color differences in healthy people and patients
This study looks at natural differences in skin color. Researchers measure skin pigmentation in healthy volunteers and people with skin conditions to better understand variation.
Leiden, LeidenAges 18 years+ - NCT07078136Recruiting
AI study for upper GI tumor diagnosis
This study uses artificial intelligence to help diagnose tumors in the upper stomach or esophagus. It looks at images from endoscopy and ultrasound to improve how doctors identify these growths.
Wuhan, HubeiAges 18 years+ - NCT07081139Recruiting
Visual screening study for children with special needs
This study uses a video-based eye-tracking system to test how well children with special needs and typical preschoolers can see. It aims to find a friendly way to screen vision without asking children to read letters.
TaipeiAges birth–70 years - NCT07080437Recruiting
Immunotherapy and chemoradiation for elderly esophageal cancer patients
This study looks at how safe and effective a combination of immunotherapy (a treatment that helps your immune system fight cancer) and standard chemotherapy plus radiation is for older adults (70+) with a type of esophageal cancer called squamous cell carcinoma who cannot have surgery or choose not to.
Chongqing, Chongqing MunicipalityAges 70 years+ - NCT06892015Recruiting
Oropouche virus shedding and immune response study
This study monitors how long the Oropouche virus stays in the body and how the immune system responds after a positive diagnosis. It may help us better understand the course of the infection and improve patient care.
Negrar, VRAges 18 years+ - NCT07065344Recruiting
A study of patients with DLBCL in the Middle East and Africa
This study looks at patients with diffuse large B-cell lymphoma (DLBCL) in the Middle East and Africa. It aims to understand how the disease is treated, what treatments are available, and how patients access newer therapies. You simply continue your regular care and the study team collects information.
Al MansurahAges Any age - NCT06548269Recruiting
Assessing stroke recovery in patients with atrial fibrillation
This study watches how people recover from a recent stroke caused by a heart rhythm problem called atrial fibrillation (or AFib). It aims to find better ways to predict recovery and guide future care.
Jinan, ShandongAges 18 years+ - NCT07069400Recruiting
Observational study of adults with acute infection
This study observes adults hospitalized with a new or recent infection (symptoms started within 30 days). The goal is to learn more about how infections affect people in the hospital, without testing any new drugs or treatments.
Tucson, ArizonaAges 18 years+ - NCT07055607Enrolling by invitation
Real-world study of Wegovy for weight management
This study observes how Wegovy works in everyday medical practice for people who are starting it for the first time. It will help doctors learn more about its real-life benefits and safety.
BarcelonaAges 18 years+ - NCT07061093Recruiting
Hormonal birth control and 24-hour blood pressure study
This study looks at how different types of hormonal birth control might affect your blood pressure over 24 hours. It could help you and your doctor choose a birth control that is safer for your heart.
Genova, GEAges 18–50 - NCT07058454Recruiting
Heart safety study for targeted cancer therapies
This study looks at how targeted cancer treatments affect the heart. If you are an adult with any type of cancer and are getting or will get chemotherapy (including targeted drugs), joining this study helps doctors understand heart risks better.
Guangzhou, GuangdongAges 18 years+ - NCT07064369Enrolling by invitation
Thyroid tumor study: new predictive factors
This study looks at different types of thyroid tumors to find new factors that might help predict how the disease will progress or respond to treatment. If you have been diagnosed with a thyroid tumor, you may be able to join.
RomaAges 18 years+ - NCT07059286Enrolling by invitation
Pregnancy, Baby Brain Scans, and Child Development Study
This study looks at how a mother's health and experiences during pregnancy may affect her baby's brain growth and early development. You and your baby would have special MRI brain scans, fill out some questionnaires, and then your child's development would be followed until they are 6 years old.
Milan, MIAges 18 years+ - NCT06989008Recruiting
Improving diabetes care with wearable sensors
This study tests if wearing two devices (a continuous glucose monitor and a sports wristband) can help improve diabetes care. It focuses on people with type 2 diabetes who live in certain Chicago neighborhoods and are willing to use the devices.
Chicago, IllinoisAges 18–65 - NCT07054229Recruiting
Microwave ablation for low-risk thyroid microcancer
This study looks at whether microwave ablation, a minimally invasive treatment, works as well as surgery for small, low-risk thyroid cancers. It uses special ultrasound and genetic tests to help decide the best treatment.
Guangzhou, GuangdongAges 18–70 - NCT07041606Recruiting
A study on advanced endometrial cancer in Russia
This study looks at genetic profiles and first treatments for advanced or aggressive endometrial cancer in women in Russia. It aims to understand how genetic information might guide better treatment choices.
ArkhangelskAges 18 years+ - NCT07035938Recruiting
T-Cell Health in Blood Cancer Patients Study
This study looks at how T-cells (a type of immune cell) work in people with certain blood cancers (B-cell lymphoma or multiple myeloma) compared to healthy volunteers. The goal is to learn more about the immune system in these cancers, which may help improve future treatments.
Xiamen, FujianAges 18 years+ - NCT07036146Recruiting
Study of S100B changes after head trauma in the ER
This study looks at changes in a protein called S100B in people who come to the emergency room with a head injury. It is an observational study, meaning no treatment is given; researchers just take blood samples to see how S100B levels change, which might help doctors better understand head injuries.
Milan, MilanoAges Up to 100 years - NCT07028177Recruiting
Etomidate dose for surgery in people with insomnia
This study looks at how much etomidate (a sleep-inducing medicine used during surgery) is needed for people with insomnia compared to those who sleep normally. It aims to help doctors give safer and more effective doses for patients with insomnia who need general anesthesia.
Beijing, Beijing MunicipalityAges 18–64 - NCT07028190Recruiting
Rimazolen dose in insomnia patients under anesthesia
This trial looks at how much Rimazolen, a sleep medicine, is needed during surgery for people with insomnia compared to normal sleepers. It aims to find the right dose for better recovery.
Beijing, Beijing MunicipalityAges 18–64 - NCT07023172Recruiting
Study of Proline Plus Empagliflozin for Type 2 Diabetes
This study is testing a new medication called Proline Plus Empagliflozin to see how well it works for people with type 2 diabetes. It is for people who are starting this medication for the first time.
Xinyang, HenanAges 18 years+ - NCT06997055Recruiting
Study of Steqeyma® biosimilar in Crohn's and psoriasis
This study follows people with Crohn's disease or plaque psoriasis who are switching from the reference Ustekinumab to a biosimilar (Steqeyma®). It aims to see how well the biosimilar works in real-world settings.
AmiensAges 18 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.