Observational: Clinical Trials

335 trials of Observational, newest first

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149 completed, 68 unknown, 57 recruiting, 17 active not recruiting. 8 Not applicable, 2 Phase 2, 1 Early Phase 1, 1 Phase 1, 1 Phase 3.

By phase and status

PhaseTrialsStatus
Not applicable8Completed 3, Unknown 3, Recruiting 1, Withdrawn 1
Phase 22Active not recruiting 1, Completed 1
Early Phase 11Active not recruiting 1
Phase 11Active not recruiting 1
Phase 31Recruiting 1

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Trials newest first · largest first

Tick up to 5 trials to compare them side by side (eligibility, arms, endpoints, adverse events) in a Literature Matrix.

TrialPhaseStatusSponsorEnrollmentStartUpdated
A Study to Evaluate the Analgesic Properties of Topically Applied Menthol in Marathon Participants
Observational, Non-Interventional Study - Muscle Soreness
Not yet recruitingReckitt Benckiser Healthcare (UK) Limited6002026-10-112026-10-16
Long-Term Follow-Up Study of Gamgertamig
Observational - Autoimmune Cytopenias
Not yet recruitingLakefront Biotherapeutics West LLC1002026-10-012026-09-29
Respiratory and Exercise Responses by Body Roundness Index in Obesity
Observational - Obesity
Not yet recruitingBiruni University1202026-06-202026-05-19
Artificial Intelligence-assisted MDS-UPDRS Assessment for Parkinson's Disease
Observational - Parkinson Disease
RecruitingHong Kong University of Science and Technology5002026-06-012026-07-08
TDAP in Burn Patients (Group 2)
Observational Cohort (No Intervention) - Sepsis, Burn Injury
Not yet recruitingHenry M. Jackson Foundation for the Advancement of Military Medicine802026-05-152026-02-04
Surgical Critical Care Initiative (SC2i) Tissue and Data Acquisition Protocol (TDAP) in Burn Patients Improving the Robustness and Generalizability of Post-burn Sepsis Prediction With the Post-Burn Sepsis Digital Twin. Group 1
Observational Cohort (No Intervention) - Sepsis, Burn Injury
Not yet recruitingHenry M. Jackson Foundation for the Advancement of Military Medicine402026-05-152026-02-04
Validation of an Ex Vivo Calf Brain Force Detection System for Neurosurgical Simulation Training
Observational - Surgical Education
Not yet recruitingMcGill University302026-05-012026-05-13
A Prospective Observational Trial to Assess Treatment Sequences and Factors That Impact Overall Sur-vival in Patients With Chronic Lymphocytic Leukaemia (CLL) Treated Within First-line Studies of the GCLLSG
Observational - Chronic Lymphocytic Leukemia
RecruitingGerman CLL Study Group20002026-04-022026-04-30
A Long-Term Follow-Up Study of Subjects Completing the AU-011-301(CoMpass) for Early Choroidal Melanoma
Observational - Choroidal Melanoma, Indeterminate Lesions
Enrolling by invitationAura Biosciences1002026-03-272026-08-19
NeuroCare Community Project: A Community Based Prospective Observational Study for Early Alzheimer's Detection in HK
Observational - AD - Alzheimer's Disease, Mild Cognitive Impairment
RecruitingHong Kong University of Science and Technology25002026-03-232026-07-08
Deciphering the Factors of Longevity Through a Multi-Omics Study in Long-Lived Individuals in Hong Kong
Observational - Aging
RecruitingHong Kong University of Science and Technology25002026-03-012026-07-08
Individualized AML Treatment
Observational - Relapsed/Refractory Acute Myeloid Leukemia (AML)
RecruitingCity of Hope Medical Center202026-01-282026-10-06
A 15-year Cohort Study on Risk Factors of Mortality in Patients With Intestinal Tuberculosis
Observational - Intestinal Tuberculosis
RecruitingBeijing Chest Hospital, Capital Medical University5002026-01-012026-05-08
An Open-label, Observational, Long-term Follow-up Study Evaluating the Safety and Efficacy of RGL-193 Putamen Injection in Patients With Primary Parkinson's Disease
Observational - Parkinson's Disease
Not yet recruitingAnhui Provincial Hospital62025-12-152025-12-12
Canadian Consortium on Airway Mucus Occlusions in Asthma, COPD and Chronic Cough
Observational - Asthma, Chronic Obstructive Pulmonary Disease (COPD)
RecruitingMcMaster University2402025-12-112026-09-24
Wellness of Osteopathic Medical Students Throughout Their Training (Well-COM)
Observational - Students, Medical
RecruitingSam Houston State University6502025-12-072025-05-18
Real-world Outcomes of Peripheral T-cell Lymphoma: A Multicenter Retrospective and Prospective Cohort Study
Observational - Peripheral T-Cell Lymphoma
RecruitingFudan University30002025-11-152026-03-24
Benefits of Retained Insulin for Good Health
Observational - Diabetes (Insulin-requiring, Type 1 or Type 2), Diabetes
RecruitingRoyal Devon and Exeter NHS Foundation Trust7002025-10-312026-09-18
Exploring Multidimensional Trajectories in People With Low Back Pain
Observational - Acute Low Back Pain, Chronic Low Back Pain (CLBP)
RecruitingBern University of Applied Sciences6002025-10-162026-10-07
A Study to Understand the Analgesic Properties of Topically Applied Menthol When Used in a Marathon.
Observational - Muscle Soreness
CompletedReckitt Benckiser Healthcare (UK) Limited3672025-10-122026-05-04

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Conditions studied

COVID-19 (11)  ·  Obesity (11)  ·  Diabetes Mellitus, Type 2 (8)  ·  Heart Failure (8)  ·  Motor Activity (8)  ·  Cardiovascular Diseases (7)  ·  Neoplasms (7)  ·  Pulmonary Disease, Chronic Obstructive (7)  ·  Diabetes Mellitus, Type 1 (6)  ·  Atrial Fibrillation (5)  ·  Breast Neoplasms (5)  ·  Cognitive Dysfunction (5)  ·  Diabetes Mellitus (5)  ·  Pain (5)  ·  Sepsis (5)

Sponsors

Columbia University (6)  ·  Duke University (6)  ·  Abant Izzet Baysal University (5)  ·  Azienda Ospedaliera Specializzata in Gastroenterologia Saverio de Bellis (5)  ·  Centre Hospitalier de Cayenne (5)  ·  HaEmek Medical Center, Israel (5)  ·  University of Minnesota (5)  ·  Jewish General Hospital (4)  ·  Pfizer (4)  ·  Ain Shams University (3)  ·  Centre Hospitalier Universitaire de Nice (3)  ·  French Africa Pediatric Oncology Group (3)  ·  Hanmi Pharmaceutical Company Limited (3)  ·  Henry M. Jackson Foundation for the Advancement of Military Medicine (3)  ·  Hong Kong University of Science and Technology (3)

Countries

United States (113)  ·  France (27)  ·  Canada (25)  ·  United Kingdom (24)  ·  China (18)  ·  Italy (18)  ·  Spain (18)  ·  Turkey (Türkiye) (18)  ·  Germany (10)  ·  Denmark (9)  ·  Netherlands (8)  ·  Belgium (7)  ·  Australia (6)  ·  Israel (6)  ·  Switzerland (5)

Top investigators

Olivier Beauchet, MD (3)  ·  Andrea B. Goldschmidt, Ph.D. (2)  ·  Ariel Koren, MD (2)  ·  Carina Levin, MD (2)  ·  Jacqueline Montes, PT, EdD (2)  ·  Kishore Mulpuri, FRCSC (2)  ·  Leticia Castillo, M.D. (2)  ·  Matthew Crotty, PharmD (2)  ·  Nancy Ip, PhD (2)  ·  Simon Fifer, PhD (2)  ·  Steven Spandorfer, MD (2)  ·  Vibeke Andersen, MD, PhD (2)

Results publications

PMID 11112239, PMID 11459755, PMID 11775787, PMID 11832252, PMID 11843075, PMID 12127181, PMID 14599700, PMID 15021773, PMID 15449976, PMID 16908781, PMID 17084135, PMID 17110646, PMID 17239183, PMID 17289240, PMID 17786808, PMID 17897924, PMID 1798888, PMID 18058946, PMID 18626005, PMID 19026961, PMID 19129538, PMID 19249635, PMID 19893191, PMID 19918928, PMID 20360052, PMID 20430946, PMID 20448073, PMID 20876603, PMID 21098350, PMID 21146692, PMID 21479777, PMID 21637107, PMID 21934364, PMID 22182495, PMID 22237443, PMID 23023812, PMID 2317323, PMID 23357614, PMID 23537808, PMID 23547173, PMID 23595875, PMID 23825616, PMID 24034757, PMID 24297837, PMID 24347317, PMID 24589344, PMID 24637931, PMID 24646328, PMID 24682347, PMID 25034713

NIH funding

2019 (2), P30MH062261 (1), R01DK126826 (1), R01MD012249 (1), R01NS114552 (1), R03DK117198 (1), U01DK097772 (1), U01DK097779 (1), U01DK097780 (1), U01DK099879 (1), U01DK099932 (1), U01DK100011 (1), U01DK100017 (1), U01DK123745 (1), U01DK123759 (1)