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Status

Suspended 1

Sponsor Class

OTHER 1

Study Type

Observational 1

Sponsor

Cancer Type

Gastrointestinal 1

Conditions

Neoplasms 86Breast Neoplasms 70Prostatic Neoplasms 34Head and Neck Neoplasms 26Lung Neoplasms 24Colorectal Neoplasms 24Ovarian Neoplasms 22Uterine Cervical Neoplasms 21Endometrial Neoplasms 16Brain Neoplasms 15Rectal Neoplasms 12Pancreatic Neoplasms 11Colonic Neoplasms 11Urinary Bladder Neoplasms 9Melanoma 9Lymphoma 9Leukemia 9Depression 9Stomach Neoplasms 8Pain 8Motor Activity 8Colorectal Neoplasms, Hereditary Nonpolyposis 8Sarcoma 7Oropharyngeal Neoplasms 7Multiple Myeloma 7Hematologic Neoplasms 7COVID-19 7Vulvar Neoplasms 6Health Behavior 6Glioma 6

Interventions

Surveys and Questionnaires 1Phlebotomy 1

Date Range

30 days90 days1 yearAll

Options

Has results Has announcements

Clinical Trials

1 trials
RecentStart dateEnrollment
Observational × Irritable Bowel Syndrome × Surveys and Questionnaires × Clear all
NCT04306939 2026-01-07

GREAT1

University of Pittsburgh

Suspended
120,000 enrolled
Gastrointestinal

Arthritis, Rheumatoid, Celiac Disease, Cholecystitis, Cholelithiasis, Chronic Disease, Crohn Disease, Cystic Fibrosis, Diabetes Mellitus, Fibrosis, Gastritis, Hepatitis, Liver Cirrhosis, Biliary, Multiple Sclerosis, Pancreatic Cyst, Exocrine Pancreatic Insufficiency, Pancreatitis, Inflammatory Bowel Diseases, Irritable Bowel Syndrome, Dyslipidemias, Pancreatitis, Chronic, Renal Insufficiency, Chronic, Chronic Pain, Non-alcoholic Fatty Liver Disease

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