Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,166 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06444646Recruiting
Studying fat cell particles in obesity
This study looks at tiny particles released from fat tissue in people with and without obesity. It aims to understand differences that might help explain obesity-related health problems.
Genk, LimburgAges 18–65 - NCT06447103RecruitingPhase 2
New scan to find kidney cancer after surgery
This trial tests a special PET scan to see if it can better find leftover kidney cancer after surgery compared to a standard CT scan. You may qualify if you had kidney cancer surgery within the last 4-16 weeks and are at high risk of the cancer coming back.
Los Angeles, CaliforniaAges 18 years+ - NCT06453044RecruitingPhase 2
Study of two drugs for follicular lymphoma that came back
This study tests a combination of two targeted drugs (mosunetuzumab and polatuzumab vedotin) for people with follicular lymphoma that has come back or not responded to previous treatment. The goal is to see if this two-drug approach can help shrink tumors and control the disease.
Duarte, CaliforniaAges 18 years+ - NCT06457945Recruiting
Mind-wandering and daydreaming in narcolepsy and hypersomnia
This study looks at whether people with narcolepsy or idiopathic hypersomnia have different patterns of daydreaming and mind-wandering compared to others with sleepiness but no clear diagnosis. It helps understand how certain brain states during sleep might affect waking thoughts.
LyonAges 18–65 - NCT06460142Recruiting
Biomarker study for giant cell arteritis and polymyalgia rheumatica
This study is looking for biomarkers (biological clues) in people with newly diagnosed or flaring giant cell arteritis (GCA) or polymyalgia rheumatica (PMR). Participating may help researchers find better ways to diagnose and monitor these conditions.
Bonn, North Rhine-WestphaliaAges 18 years+ - NCT06469320Recruiting
Bladder leaks and pelvic floor issues in trail runners
This study looks at bladder leaks and other pelvic floor issues that trail runners may experience. By completing an online questionnaire, you'll help researchers understand how common these problems are and what might help.
Saint-DenisAges 18 years+ - NCT06473935Recruiting
Maternal well-being study for first-time mothers
This study follows first-time mothers from the last months of pregnancy until 18 months after childbirth to understand and support maternal well-being. You will be asked to fill out questionnaires and attend check-ins during this time.
MilanAges Any age - NCT06477042Recruiting
Act on quality of life in patients with aortic stenosis
This trial studies how a TAVI procedure affects the quality of life of people with aortic stenosis, especially those with multiple health conditions. It may help doctors understand how this treatment improves daily living for patients like you.
Clermont-FerrandAges 18 years+ - NCT06478030Recruiting
Combined screening for stomach and bowel cancer
This study is testing a combined screening method for finding cancer in the stomach and intestines at an early stage. It is for people in Zhejiang Province who are willing to be screened and followed over time.
Jinhua, ZhejiangAges 40–74 - NCT06483620Recruiting
Arabic quality of life questionnaire for diabetic neuropathy
This trial tests a new Arabic questionnaire to measure quality of life for people with diabetic neuropathy. It helps doctors understand how nerve pain affects daily life.
Cairo, Giza GovernorateAges 18–70 - NCT06485778RecruitingPhase 2
Radiation after surgery for early-stage oral tongue cancer
This trial tests whether giving radiation after surgery can lower the risk of the cancer coming back for people with oral tongue cancer that has specific high-risk features but not advanced spread. It aims to find the best treatment plan for patients with certain tumor characteristics.
Basking Ridge, New JerseyAges 18 years+ - NCT06487364Recruiting
How much change in a Parkinson's quality-of-life test matters
This study looks at a short questionnaire (Parkinson's Disease Questionnaire-8) that measures how Parkinson's affects your daily life. The goal is to find out the smallest change in the questionnaire that really matters to patients.
IstanbulAges 40–80 - NCT06491212Recruiting
Flat feet linked to breathing and balance study
This study looks at whether people with flat feet have differences in their diaphragm (a breathing muscle), balance, and foot pressure compared to people with normal arches. It may help understand how flat feet affect overall movement and stability.
Antalya, AlanyaAges 18–30 - NCT06493890Recruiting
Validating a Dutch questionnaire for prosthesis users
This study aims to validate a Dutch version of a questionnaire that measures how well people feel their prosthetic leg works for them. The goal is to make sure the Dutch version is accurate and helpful for people with one leg amputation.
Groningen, Provincie GroningenAges 18 years+ - NCT06495606Recruiting
How stomach acid affects your voice
This study looks at how stomach acid backing up into the throat can change the voice. It may help find typical voice differences in people with acid reflux.
BernAges 18 years+ - NCT06498973RecruitingPhase 1
Maintenance therapy after stem cell transplant for CD123-positive AML/MDS
This trial tests a combination of two drugs, tagraxofusp and azacitidine, given as maintenance therapy after a stem cell transplant. The goal is to prevent the leukemia or MDS from coming back in patients whose cancer cells carry a specific marker called CD123.
Duarte, CaliforniaAges 18–75 - NCT06499623Recruiting
Early detection of malnutrition in cancer and older patients
This study tests a way to spot malnutrition early in cancer patients and older adults who are in the hospital. It aims to help doctors catch and treat nutrition problems sooner.
BrnoAges 18 years+ - NCT06500169Recruiting
Golf exercise study for prostate cancer survivors
This study tests if golf can help men with prostate cancer feel better and stay healthy. It's for men who are on hormone therapy and want to try a gentle, fun exercise.
Los Angeles, CaliforniaAges 55–85 - NCT06501040Recruiting
Learning about cancer clinical trials for interested adults
This study aims to help people learn more about cancer clinical trials and become more comfortable with the idea of joining one. It is open to adults connected to Karmanos Cancer Institute who want to learn and give their permission to participate.
Detroit, MichiganAges 21 years+ - NCT06503068Recruiting
Liver disease name stigma and quality of life study
This study looks at how the names of two liver conditions (NAFLD and MAFLD) affect how patients feel about their illness and their quality of life. If you have NAFLD or NASH, you can help by filling out a survey.
Tanta, GharbyeaAges 18 years+ - NCT06504459RecruitingPhase 2
Testing a drug combo for certain types of AML
This trial tests a combination of chemotherapy drugs (venetoclax, cladribine, cytarabine, and azacitidine) for people newly diagnosed with specific types of acute myeloid leukemia (AML) who cannot have or choose not to have standard intensive chemotherapy.
Miami, FloridaAges 18 years+ - NCT06504953Recruiting
Knee movement study in women with and without hormone therapy
This study measures knee movement in healthy women ages 18-40 to see if hormone therapy affects it. You will need to come in on a specific day of your menstrual cycle.
Nice, Alpes-MaritimesAges 18–40 - NCT06506734Recruiting
Dental color changes and quality of life in early jaundice
This study looks at how early and long-lasting jaundice (high bilirubin levels) affects tooth color and quality of life in children with certain liver conditions. It aims to understand these effects to improve care.
BordeauxAges 12–18 - NCT06509308Recruiting
Understanding illness expectations in COPD patients
This study looks at what people with COPD expect from their illness and how those expectations affect their daily life. It involves answering questionnaires and simple tests.
MilanAges 18 years+
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,166 recruiting questionnaire 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 questionnaire 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 questionnaire 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.