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
- NCT05530681Recruiting
Ultrasound and pelvic floor health one year after vaginal birth
This study checks how pelvic floor function and ultrasound (picture) findings relate to each other about one year after childbirth. You may help researchers understand which physical changes after vaginal birth matter most and how to monitor them.
LeuvenAges 18–45 - NCT05532865Recruiting
Biobank study for adults with systemic sclerosis
This study follows adults with systemic sclerosis who are being seen at a specific hospital and asks for consent to store blood and other samples for future research. It may help researchers better understand the disease and develop better tests or treatments over time.
BrestAges 18 years+ - NCT05539040Recruiting
Testing why certain heart signals trigger atrial fibrillation
This trial studies abnormal electrical signals in the right upper heart chamber and how they relate to atrial fibrillation (AF). It may help improve how doctors target AF treatment during catheter ablation for people who have AF symptoms.
LondonAges 18–85 - NCT05541016RecruitingPhase 2
Personalized lower-dose radiation for HPV-related throat cancer
This Phase 2 study tests whether giving a less intense (de-escalated) radiation plan can work for certain people with HPV-related oropharyngeal throat cancer. It uses HPV blood testing and scans to help guide treatment, aiming to keep cancer control while reducing treatment side effects.
Scottsdale, ArizonaAges 18 years+ - NCT05546138Recruiting
Study for early diabetic nerve damage in people with diabetes
This trial looks for and studies early nerve problems in the feet or legs that can happen with diabetes, before nerve damage is clearly diagnosed. It may help doctors better predict who is at risk and understand early changes.
AalborgAges 18–60 - NCT05550675Recruiting
Study of bowel leakage patterns using rectal pressure tests
This trial builds a “database” to better understand why some people have stool (faecal) leakage versus double incontinence (urine plus stool). It asks about symptoms and performs a rectal pressure test to see which factors are linked to different types of leakage.
Brussels, Brussels CapitalAges 18 years+ - NCT05557877RecruitingPhase 2
Low-dose aspirin to prevent postpartum breast cancer
This study tests whether taking a low dose of aspirin after childbirth can lower the chance of developing breast cancer later. You may be asked to provide blood, urine, and breast tissue samples so researchers can look for changes that could explain why aspirin may help.
Scottsdale, ArizonaAges 18–45 - NCT05558709Recruiting
Test for thinking and behavior skills in neurodegenerative disease
This trial checks a new kind of paper-and-pen (or computer-based) test to better measure thinking and social/behavior skills in people with certain brain diseases. It may help researchers improve how these skills are tracked and understood over time.
ParisAges 18–90 - NCT05561387RecruitingPhase 3
Drug combinations for newly diagnosed myeloma without transplant
This study compares different combinations of medicines for people newly diagnosed with multiple myeloma who cannot safely get a stem cell transplant. It aims to find which drug plan works best and is tolerable for people with “frail” or “intermediate fit” health.
Anchorage, AlaskaAges Any age - NCT05564026Recruiting
Study of DNA patterns in childhood germ cell tumors
This study looks at “molecular” (DNA-related) features of germ cell tumors in children and teens. It also follows patients over time, which can help researchers understand tumor patterns and improve future care.
Minneapolis, MinnesotaAges Any age - NCT05567198Recruiting
Testing hormone shots to protect ovaries during lupus chemotherapy
This study looks at whether a monthly/3-month hormone medicine (a “GnRH shot”) can help protect ovaries in people with lupus who are treated with cyclophosphamide. It also compares this to lupus patients who do not receive the ovarian-protecting shot, using questionnaires to track outcomes.
Bethesda, MarylandAges 18–120 - NCT05586334Recruiting
Test a device to help predict preterm birth risk
This trial tests an innovative device that measures risk of preterm birth in pregnant people who come to the emergency room early in pregnancy with signs that labor might start. It may help doctors identify who needs closer monitoring or treatment sooner.
ColombesAges 18 years+ - NCT05616130Recruiting
Study of abnormal blood immune activation after trauma or elective hip surgery
This study looks at how the body’s blood-related immune system “switches on” in unusual ways after a major injury or elective hip repair. The researchers hope this helps them understand who is at risk for complications and why, by measuring changes in your blood around the time of surgery or hospital treatment.
Gainesville, FloridaAges 18–100 - NCT05624996RecruitingPhase 3
Targeted high-dose radiation added to standard lung cancer treatment
This trial tests whether adding high-dose, targeted radiation to the usual treatment helps people with locally advanced, non-operable lung cancer live longer or better control the cancer. It may help shrink tumors in the chest and improve outcomes when surgery can’t be done.
Birmingham, AlabamaAges 18 years+ - NCT05629871Recruiting
Tracking sleep changes in early Alzheimer’s and thinking decline
This study looks at how sleep and wake patterns change in people with early Alzheimer’s, and whether these changes relate to memory and thinking decline. You may be asked to do questionnaires, sleep diaries, and possibly a diagnostic spinal fluid test (lumbar puncture) to measure biomarkers.
MontpellierAges 50–85 - NCT05630794RecruitingPhase 1
Test ONC201 to prevent colorectal polyp return in high-risk people
This Phase 1 study tests whether ONC201 is safe and may help prevent colorectal polyps (adenomas) from coming back. You’d also undergo planned colon/rectum camera exams to check for new or changing polyps.
Ann Arbor, MichiganAges 18 years+ - NCT05641961Recruiting
Mobile app for childhood cancer survivors’ long-term follow-up
This study tests a smartphone or tablet app that helps childhood cancer survivors (or their caregivers) manage long-term follow-up care. If you attend the UCSF Survivorship Clinic, the app may make it easier to understand what care you need and stay on track.
San Francisco, CaliforniaAges Any age - NCT05649306Recruiting
Surveys for coping and sexual health in bladder cancer survivors
This study asks women with bladder cancer to complete questionnaires about how they cope emotionally and about sexual health. It may help researchers understand what support survivors need and improve survivorship care.
Washington D.C., District of ColumbiaAges 18 years+ - NCT05649514Recruiting
Studying sleep problems in early Alzheimer’s risk patients
This study looks at sleep problems in people with mild Alzheimer’s disease and whether sleep measurements and questionnaires can help researchers understand early changes. You may be able to join if your diagnosis is mild and you can complete repeated sleep and thinking questionnaires with a family caregiver’s help.
Montpellier, HéraultAges 50–85 - NCT05652101Recruiting
Study of skills and development in hyperekplexia
This study looks at how children and adults with hyperekplexia develop and adapt over time. It may help researchers understand what support or treatment approaches work best for day-to-day development.
BronAges 2 years+ - NCT05672615Recruiting
Mood changes during bladder cancer treatment with BCG
This study looks at how bladder cancer treatment with BCG may affect mood and emotional well-being. It may help doctors understand which patients experience mood changes during care.
Washington D.C., District of ColumbiaAges 18 years+ - NCT05678309Recruiting
Study to create a patient library for itch without a cause
This trial sets up a patient library for people who have itching with no clear underlying skin or medical cause. It aims to collect patient input and experiences to improve understanding and support for this condition.
BrestAges 18–99 - NCT05681923Recruiting
Pregnancy study tracking how brain development risk may run in families
This study follows pregnant parents and their child to understand what factors influence early brain and development. It compares families with an autistic sibling (higher risk) to families without (lower risk) to spot patterns that may help future care.
MontpellierAges Any age - NCT05692635RecruitingPhase 2
Brain MRI checks to prevent lung cancer brain symptoms
This trial tests whether doing scheduled brain MRI scans can lower the chance that lung cancer later causes symptomatic brain metastases (tumors that cause symptoms in the brain). If you’re eligible, you’ll get brain MRI surveillance at a specific time after starting radiation.
Winston-Salem, North CarolinaAges 18 years+
Hear when a new Questionnaire trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.