Clinical trials
Observational Study clinical trials
Below are recruiting observational study clinical trials, each written for real people, not researchers. We’re tracking 839 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06397833Recruiting
Monitoring heart pressure after heart failure hospitalization
This study is testing a new wearable device (Acorai ICPM) that measures pressure inside your heart. The goal is to see if it can help predict how well you will do after being discharged from the hospital for heart failure.
Uxbridge, MiddlesexAges 18 years+ - NCT06627335Recruiting
Eczema creams and pregnancy outcomes study
This study looks at women who used a topical eczema cream called ruxolitinib (Opzelura) or steroid creams during pregnancy. The goal is to compare pregnancy outcomes and baby health up to one year after birth.
Morrisville, North CarolinaAges 14 years+ - NCT06677437Recruiting
Preparing blood vessels for kidney transplant
This trial tests a procedure to fix blocked or damaged blood vessels in the pelvis so you can get a kidney transplant. It might help if your blood vessels are the only reason you can't have a transplant yet.
BronAges 18–85 - NCT06809283Recruiting
Study of Intelect devices for muscle and joint pain
This study is observing how well Intelect devices work for people with muscle or joint problems in everyday medical care. It aims to confirm the devices are safe and effective.
SerrisAges 18 years+ - NCT07218536Recruiting
Studying aHUS in Egyptian patients
This study looks back at medical records of people with a blood clotting disorder (TMA) to better understand a rare type called aHUS in Egypt. It may help doctors learn how to diagnose and treat this condition more effectively.
Al MansurahAges Any age - NCT02726750Recruiting
Study of early plasma cell blood conditions before myeloma
This is an observational study that follows people with early blood findings that can be linked to multiple myeloma, to understand what happens over time. It does not test a new drug for most people; instead, it tracks health, lab results, and imaging to learn who may develop myeloma.
Houston, TexasAges 18 years+ - NCT02784977Recruiting
Sleep apnea study using a national sleep database
This study collects information from adults who are getting a sleep test because obstructive sleep apnea is suspected. It helps researchers better understand sleep apnea and who develops it, without giving a new treatment.
IstanbulAges 18–80 - NCT07434713Recruiting
Testing early response to Eylea 8mg for wet AMD
This study looks at how quickly fluid in the retina clears after starting treatment with a higher dose of Eylea (aflibercept 8mg) for wet age-related macular degeneration (AMD). It aims to understand if early fluid changes can predict long-term outcomes.
BernAges 50 years+ - NCT07573488Recruiting
Sleep, Stress, and Migraine: Observation and Training Study
This study explores how sleep and stress affect migraine headaches and tests whether improving sleep habits can help reduce migraines. You'll be observed and taught strategies over several months while researchers track your headaches and sleep patterns.
ZurichAges 18–65 - NCT07561489Enrolling by invitation
Study of OsteoPearl Implants for Spine Fractures
This study observes how a biological implant called OsteoPearl helps people recover from recent spine fractures in the mid or lower back. Researchers will track your pain relief and ability to function over time after a minimally invasive procedure to stabilize the fracture.
Williamsville, New YorkAges 50 years+ - NCT03199066Recruiting
Study of non-Hodgkin lymphoma patients in the Czech Republic
This is an observational study that collects real-world information from people diagnosed with non-Hodgkin lymphoma. It does not test a new drug, but it may help doctors understand patient outcomes and care patterns.
PragueAges 18 years+ - NCT03418961RecruitingPhase 3
Study of heart-risk management for metastatic HER2 breast cancer
This trial follows people with metastatic HER2-positive breast cancer who are at higher risk for heart damage while on HER2-targeted therapy. Some participants are randomly assigned to different monitoring/heart-protection approaches to see what best helps keep the heart safe.
Anchorage, AlaskaAges 18 years+ - NCT05255978Recruiting
Follow-up study for hepatitis B with fatty liver
This observational study looks at people with chronic hepatitis B who also have fatty liver (non-alcoholic fatty liver disease). It follows how their liver health changes over time and may help doctors understand outcomes and risk factors.
Wuhan, HubeiAges 18 years+ - NCT05607966Recruiting
Knee replacement follow-up study for ORIGIN® implant
This study follows people who need a total knee replacement using the ORIGIN® implant. It’s meant to see how well the implant works and how people do over time with routine clinic visits.
AntwerpAges 18–99 - NCT05678530Recruiting
Study uses routine exercise test to check fitness measuring methods
This observational study does not change your treatment. It collects results from your usual cardiopulmonary exercise test (CPET) to help validate better ways to estimate VO2max, a measure of exercise capacity.
Scottsdale, ArizonaAges 18 years+ - NCT07001267Recruiting
Comparing two anesthetics for stroke procedure recovery
This trial tests whether a sedative given through an IV or a gas you breathe affects recovery after surgery to remove a blood clot in the brain. It may help find the best way to keep you comfortable during the procedure to improve how well you do after three months.
Kansas City, KansasAges 18 years+ - NCT07421895Recruiting
Study on retained tissue after pregnancy
This study follows patients with retained products of conception (tissue left in the uterus after a pregnancy) to see how they are managed in real-world medical practice. You may join if an ultrasound shows a tissue area of at least half a centimeter.
Changsha, HunanAges 18–45 - NCT05967143Recruiting
Registry study for first-time SIR-Spheres in liver tumors
This is an observational (real-world) study that follows people with certain unresectable liver tumors who are getting SIR-Spheres for the first time. It helps doctors understand how this treatment is used in routine care and what outcomes patients experience.
Clichy, CedexAges 18 years+ - NCT07546682Recruiting
Propel Sinus Implant Study in Japan
This study tests a steroid-releasing implant placed during sinus surgery to help prevent inflammation and improve healing in patients with chronic sinus infections. If you're having sinus surgery in Japan, this trial may track how well the implant works for you.
AsahikawaAges 18 years+ - NCT07388628Recruiting
Observing ARTICE® treatment in the ICU
This study is collecting real-world data on ARTICE® treatment for adults in the ICU. It helps doctors understand how this treatment works in daily practice.
MagdeburgAges 18 years+ - NCT06216782Recruiting
Neoadjuvant therapy for lung cancer: a real-world study
This study observes patients with lung cancer who receive neoadjuvant therapy (treatment before surgery) to understand how well it works in everyday medical practice.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT06577779RecruitingPhase 4
Testing Jornay PM for adult ADHD symptoms into the evening
This study tests if Jornay PM, a long-acting ADHD medication, helps control symptoms, focus, and emotions throughout the day and into the early evening in adults with ADHD. It is an open-label study, meaning everyone knows they are getting the medication, and then they are randomly assigned to different observation groups.
New York, New YorkAges 18–60 - NCT04750798Recruiting
Monitoring approved catheter devices during heart rhythm ablation
This study is observing people with common abnormal heart rhythms who are already scheduled for a catheter ablation using an approved Biosense Webster catheter. It aims to better understand real-world use and outcomes, without testing a new drug.
GrazAges Any age - NCT06764602Recruiting
Kidney health in kids with tuberous sclerosis
This study looks back at medical records to see how many children with tuberous sclerosis complex (TSC) have kidney problems. It may help doctors understand how common kidney issues are in kids with TSC.
BolognaAges Up to 17 years
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Common questions
- Are there clinical trials for observational study?
- Yes. Clin2 currently lists 839 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.