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Status

Suspended 1

Sponsor Class

OTHER 1

Study Type

Observational 1

Sponsor

Cancer Type

Gastrointestinal 1

Conditions

Colorectal Neoplasms 38Breast Neoplasms 20Pancreatic Neoplasms 19Rectal Neoplasms 18Colonic Neoplasms 17Gastrointestinal Neoplasms 16Prostatic Neoplasms 12Esophageal Neoplasms 12Stomach Neoplasms 11Lung Neoplasms 11Colorectal Neoplasms, Hereditary Nonpolyposis 10Endometrial Neoplasms 9Anus Neoplasms 6Uterine Cervical Neoplasms 4Neoplasms 4Motor Activity 4cyclopia sequence 3Sarcoma 3Ovarian Neoplasms 3Liver Neoplasms 3Head and Neck Neoplasms 3Gastrointestinal Stromal Tumors 3Disease 3Carcinoma, Renal Cell 3Carcinoma, Hepatocellular 3Appendiceal Neoplasms 3Vulvar Neoplasms 2Vomiting 2Urinary Bladder Neoplasms 2Thyroid Neoplasms 2

Interventions

Surveys and Questionnaires 1Phlebotomy 1Diet, Gluten-Free 1

Date Range

30 days90 days1 yearAll

Options

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Clinical Trials

1 trials
RecentStart dateEnrollment
Celiac Disease × Surveys and Questionnaires × Gastrointestinal × 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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