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
- 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 - NCT06784778Recruiting
Testing a blood test to predict immunotherapy response
This study is testing a new blood test called IOpener®-Melanoma to see if it can predict which patients with advanced melanoma will respond well to immunotherapy. The goal is to better match treatments to people who will benefit most.
Tübingen, Baden-WurttembergAges 18 years+ - NCT06851702Recruiting
Tracking hormone side effects from immunotherapy in blood cancer
This study looks at people with certain types of blood cancer (lymphoma or leukemia) who are getting immunotherapy drugs called checkpoint inhibitors. Researchers want to learn how these drugs affect the body's hormone system, so doctors can better manage these side effects.
Bologna, BolognaAges 18 years+ - NCT07350759Recruiting
Using a wearable to detect heart failure worsening
This study tests if a wearable device can spot early signs of heart failure getting worse. If you already use a heart monitor and have stable readings, you may help show how a non-invasive wearable could alert you sooner.
Tampa, FloridaAges 18 years+ - NCT07347002Enrolling by invitation
Observational study of chikungunya vaccine effectiveness in Brazil
This study looks at how well the VLA1553 vaccine prevents chikungunya disease in parts of Brazil where the vaccine is being offered as part of a pilot program. If you live in one of those areas and have had symptoms that might be chikungunya, this study will use your health records and blood tests to check how effective the vaccine is.
Belo Horizonte, Minas GeraisAges 18–59 - NCT07351838Recruiting
Heart MRI for risk screening in early cardiomyopathy
This study uses heart MRI to find people with early signs of heart muscle disease who still have normal-sized heart chambers. It aims to better predict who is at risk so they can get earlier care.
BeijingAges 16 years+ - NCT07349914Enrolling by invitation
Shoulder Pain and Function with Heart Devices
This study looks at shoulder pain and how well the shoulder works in people who have a heart device like a pacemaker. It aims to understand if having the device affects shoulder function over time.
Ankara, SamanpazariAges 18 years+ - NCT07336199Recruiting
Pairing your ratings with DBS programming
This study looks at how your own ratings of your Parkinson's symptoms can help fine-tune your deep brain stimulation (DBS) settings. It is for people with Parkinson's who already have a DBS device that can record brain activity.
MünchenAges 35–80 - NCT07339007Enrolling by invitation
Validating a heart ultrasound training program for family doctors
This study tests whether a training program helps family doctors use a focused heart ultrasound (FoCUS) to assess patients. If you need a heart ultrasound as part of your regular care, you may be able to join.
Barcelona, CataloniaAges 15 years+ - NCT06860438Recruiting
Using a new monitor to guide blood pressure meds in sepsis
This study looks at a special blood flow monitor (perfusion index) to see if it can help doctors decide when to give blood pressure raising medicines in patients with serious infections. It might help doctors better treat sepsis and septic shock.
CairoAges 18 years+ - NCT07330505Recruiting
Checking blood pressure monitor setup in the ICU
This study looks at how doctors set up the blood pressure monitors in the ICU. It checks if the position of the monitor affects the readings, and it may help improve care for patients on breathing machines and blood pressure support.
GothenburgAges 18 years+ - NCT07326137Recruiting
Pain relief and first-line treatment for advanced bile duct or pancreatic cancer
This study tests combining standard first-line cancer therapy with a nerve block to reduce pain in people with advanced bile duct or pancreatic cancer. It aims to see if this combination can improve pain control and quality of life.
Wuhan, HubeiAges Any age - NCT07314190Enrolling by invitation
Blood tests for brain diseases and mental health conditions
This study looks at blood tests to help diagnose and track brain diseases (like Alzheimer's) or mental health conditions. It compares patients to healthy volunteers to find better ways to detect and monitor these illnesses.
BarcelonaAges 18 years+ - NCT07300462Enrolling by invitationPhase 4
Oral cholera vaccine safety study for children
This trial is for children aged 2 to 14 who have not had a cholera vaccine before. It tests a safe, oral vaccine to prevent cholera, a serious diarrheal disease.
Hefei, AnhuiAges 2–14 - NCT06878534Recruiting
Thyroid cancer genetic study for patients with follicular origin
This study looks at the genes and mutations in thyroid cancers that start in follicular cells. It aims to understand how these changes relate to how aggressive the cancer is.
NaplesAges 18 years+ - NCT06791889Recruiting
Tracking bacteria in blood of ICU sepsis patients
This study uses a highly sensitive blood test (DdPCR) to quickly find and monitor harmful bacteria in ICU patients with sepsis, aiming to improve early detection and treatment.
WuhanAges 18 years+ - NCT07290972Recruiting
Cervical cancer treatment compliance audit
This trial studies whether hospitals follow standard treatment guidelines for cervical cancer. It looks at how often patients receive the recommended radiation and chemotherapy.
Mumbai, MaharashtraAges Any age - NCT07292649Recruiting
Labor pain relief and postpartum depression risk
This study looks at how your expectations about pain relief during labor might affect your mood after giving birth. Researchers will follow you after delivery to see if there is a link between your hopes for pain management and the risk of postpartum depression.
Padova, VenetoAges 18 years+ - NCT07287891Recruiting
Predicting brain causes of dizziness in the ER
This study is observing patients who come to the emergency department with vertigo, dizziness, or unsteadiness. Researchers want to predict which of these symptoms are caused by a brain problem (central nervous system), helping doctors make fast and accurate decisions.
Pavia, PaviaAges 18 years+ - NCT07291219Recruiting
Chronic heart failure patient registry study
This study creates a registry of people with chronic heart failure to track their health over time. It may help researchers learn more about the condition and improve future care.
Pavia, PaviaAges 18 years+ - NCT06879964Recruiting
Radiation after surgery for high-grade skin cancer
This study looks at whether radiation therapy after surgery helps people with a high-grade type of skin cancer called squamous cell carcinoma. It may help doctors understand who benefits most from this additional treatment.
Pavia, PaviaAges 18 years+ - NCT07284888Recruiting
Prone positioning for ARDS patients on ventilators
This study looks at how placing patients on their stomach (prone positioning) affects those with serious lung failure (ARDS) who are on a breathing machine. It aims to learn more about the best practices for this treatment in the ICU.
Nanjing, JiangsuAges 18 years+ - NCT07287410Recruiting
Assessing thinking and daily life in dementia and MCI
This study looks at how dementia or mild cognitive impairment affects thinking, daily living, and mood. The goal is to better understand these conditions by doing careful assessments.
Messina, MEAges 50–86 - NCT04181970Recruiting
Study of sarcoma care quality across Europe and Latin America
This observational study looks at information from people with sarcoma to understand how care is delivered across different centers. It does not test a new treatment, but may help improve future care and planning.
Buenos AiresAges 18–120
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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.