Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,132 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04194619Recruiting
Study of pregnancy safety in women with rare blood-vessel diseases
This study looks at pregnancy and the early period after birth in women with rare diseases that affect blood vessels. It may help doctors understand risks and improve care for future pregnancies.
AngersAges 18–45 - NCT04251052Recruiting
Compare two surgeries to lower ovarian cancer risk in BRCA1 carriers
This study compares two risk-reducing surgery plans for people with a BRCA1 genetic change to see which approach helps lower ovarian cancer risk. You may be asked to have the study procedure sooner or later depending on your chosen plan.
Birmingham, AlabamaAges 35–50 - NCT04216732Recruiting
Study of medullary thyroid cancer progression in a registry
This study follows people with medullary thyroid cancer to better understand how the disease changes over time, including in advanced stages. You may help improve future treatment planning and care for people with medullary thyroid cancer.
San Francisco, CaliforniaAges 18 years+ - NCT07730307Recruiting
Study on sharing suicidal thoughts and getting support
This study looks at how people share their experiences with suicidal thoughts or severe depression and what happens when they seek support. It aims to help understand the risks and benefits of talking about these struggles.
Mpunde, Buyende DistrictAges 18 years+ - NCT04074356Enrolling by invitation
Tests for esophagus function using noninvasive body measurements
This study looks for noninvasive ways to measure how well your esophagus is moving. It may help doctors better evaluate swallowing and esophagus movement without relying only on invasive testing.
Nashville, TennesseeAges 18 years+ - NCT04049890Recruiting
Questionnaire study for families managing a child’s chronic illness
This study asks families to fill out and review a questionnaire about how you are coping at home when a child has a long-term (chronic) health condition. It may help create a better tool to understand family adjustment during ongoing hospital treatment.
Florence, FirenzeAges Any age - NCT00505245Recruiting
Testing a new way to measure cancer symptom distress
This study tests a new assessment system (a set of questions/tools) to better measure how much distress cancer patients feel from symptoms. It may help cancer teams better understand your symptom burden and improve support.
Houston, TexasAges 18 years+ - NCT03937635RecruitingPhase 3
Lenalidomide and dexamethasone, with or without daratumumab
This phase 3 trial studies whether lenalidomide plus dexamethasone can prevent or delay progression of “high-risk smoldering” multiple myeloma, and whether adding daratumumab improves outcomes. It’s meant for people who are not yet showing symptoms, but whose lab and scan results suggest higher risk.
Birmingham, AlabamaAges 18 years+ - NCT03959085RecruitingPhase 3
Inotuzumab plus chemotherapy for high-risk childhood leukemia
This Phase 3 trial tests whether adding inotuzumab to standard post-induction chemotherapy improves outcomes for children and young teens with high-risk B-ALL, mixed phenotype acute leukemia (MPAL), or certain high-risk B-LLy. It may help by targeting leukemia cells more directly, but participation depends on specific age, lab results, and medical history rules.
Birmingham, AlabamaAges 12 months–25 years - NCT03966612Recruiting
Monitoring people with MEN1 and related hormone gland tumors
This study follows people who have Multiple Endocrine Neoplasia type 1 (MEN1), a genetic condition that can cause tumors in hormone glands. It aims to monitor symptoms and lesions over time to better understand how the condition progresses and how to manage it.
DijonAges Any age - NCT03941080Recruiting
Study gut bacteria changes in advanced colorectal cancer
This study looks at how gut bacteria (the microbiome) change during treatment for colorectal cancer that has spread or cannot be removed. Researchers hope the findings may help improve understanding of how treatment works and how to tailor care.
AssenAges 18 years+ - NCT03956446Recruiting
Testing blood antibody patterns in tick-borne brain and Lyme illness
This study looks at blood antibody test results in adults who may have tick-borne encephalitis and also signs of Lyme disease. It may help researchers understand how these infections relate and which lab patterns fit different illnesses.
LjubljanaAges 18 years+ - NCT03918421Recruiting
IgM-MAG neuropathy study using immunoglobulin M treatment
This study looks at a treatment made from immune proteins (immunoglobulin M) to treat neuropathy caused by anti-MAG antibodies. It may help improve nerve symptoms in people with this specific type of nerve condition.
BronAges 18 years+ - NCT03915106Recruiting
Quality of life in teens with scoliosis needing brace or surgery
This study looks at how much day-to-day quality of life changes for people with adolescent idiopathic scoliosis who either need a brace or need surgery. It uses a short questionnaire to understand how treatment affects comfort, activity, and overall well-being.
ShatinAges Any age - NCT03932786Recruiting
Study of health and wellbeing after retinoblastoma treatment
This study looks at long-term health outcomes—how patients are doing physically and in daily life—after treatment for retinoblastoma. It may help doctors understand what support or follow-up care could be most helpful after treatment.
Chicago, IllinoisAges Any age - NCT03723928Recruiting
Blood test–guided monitoring for metastatic breast cancer treatment
This study checks whether specific blood “tumor marker” levels can help monitor how hormone receptor–positive, HER2-negative metastatic breast cancer responds to first-line therapy. It uses regular blood tests (and sometimes scans) to see if this marker-based monitoring is useful and reliable.
Anchorage, AlaskaAges 18 years+ - NCT03750227RecruitingPhase 3
Radiation before or after brain tumor surgery
This study compares giving focused, high-precision radiation before or after surgery for brain metastases. It aims to see which timing works best to control tumors and improve outcomes.
Scottsdale, ArizonaAges 18 years+ - NCT03807128Recruiting
Study for multiple myeloma resistance and relapse changes
This study looks at how multiple myeloma (a bone marrow cancer) changes over time, especially why it becomes resistant to treatment or comes back. It may help researchers learn what drives relapse and could lead to better future treatments.
La Roche-sur-YonAges 18 years+ - NCT03874052RecruitingPhase 1
Ruxolitinib plus venetoclax and azacitidine for relapsed AML
This early-phase study tests a combination of ruxolitinib with venetoclax, with or without azacitidine, for adults whose acute myeloid leukemia (AML) has come back or does not respond to treatment. It may help by stopping cancer cells from growing and improving blood counts, with the exact plan guided by the study arm you’re assigned to.
Columbus, OhioAges 18 years+ - NCT03592563Recruiting
Brain health follow-up study for adults
This study follows adults over time to better understand brain health and brain-related conditions. You may join if you already have certain neurological or psychiatric diagnoses, are at higher risk, or simply want to help research on maintaining brain health.
Hong KongAges 18 years+ - NCT03659019Recruiting
Database study for implanted phrenic nerve stimulators
This study collects information about people with long-term breathing problems who may receive an implanted device that helps control breathing. It helps doctors better understand who benefits and how these treatments are used in real life.
Paris, Île-de-France RegionAges 5 years+ - NCT03667417Recruiting
Study of people with BRCA1/BRCA2 cancer gene changes
This study follows people who carry a harmful BRCA1 or BRCA2 gene mutation, whether or not they currently have breast or ovarian cancer. The goal is to better understand cancer risk over time and how being a carrier may affect screening and care.
MarseilleAges 18 years+ - NCT07735078Recruiting
Smart balance and thinking exercise for older adults
This study tests a smart digital tool that combines balance and thinking exercises to help older adults stay steady and prevent falls. If you are 55+ and can walk a short distance, you may be able to join.
Taipei, TaipeiAges 55 years+ - NCT03478553Recruiting
Study of genes in people with pulmonary fibrosis
This study looks at genetic (inherited) factors related to pulmonary fibrosis, especially idiopathic pulmonary fibrosis (IPF). It may help researchers understand why some families are more affected and could guide future testing or treatments.
Aurora, ColoradoAges 18 years+
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,132 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.