Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 3:08 AM
Ignite Modification Date:
2025-12-25 @ 3:08 AM
NCT ID:
NCT02699333
Brief Summary:
Microscopic colitis is a common cause of watery diarrhea, particularly in the elderly. Although the incidence is comparable to ulcerative colitis and Crohn's disease, the etiology is unknown. Understanding the etiology of microscopic colitis is an important step in developing logical interventions to decrease the burden from microscopic colitis. This research could provide critical insights into the etiology of this poorly studied condition.
Detailed Description:
Microscopic colitis (MC) is a chronic condition that is a common cause of watery diarrhea, particularly in the elderly. The etiology is unknown but widely considered to be an abnormal immune reaction to luminal antigens in predisposed hosts. Drugs and autoimmunity have also been implicated. The aims of the study are: 1) To quantitatively classify microscopic colitis using image analysis microscopy to determine whether the degree of lymphocytic infiltration correlates with etiology, symptoms and prognosis. 2) To investigate the etiology of microscopic colitis by examining medical and lifestyle risk factors including medications, autoimmunity, diet, and smoking 3) To evaluate the association between the adherent microbial flora and MC to assess whether bacterial dysbiosis is linked to presence of MC. As an exploratory aim we will evaluate whether CYP2C19 polymorphisms are more common in purportedly drug-induced disease since the diverse drugs that have been associated with MC are all substrates for this gene.
To conduct the study the investigators will obtain detailed dietary, medical and lifestyle information on study subjects who undergo complete colonoscopy for diarrhea. The investigators will obtain colon biopsies from the right, transverse and left colon to evaluate adherent bacterial organisms. The investigators will draw blood to evaluate CYP2C19 polymorphisms and for future genetic studies. The prospective design corrects important limitations of prior research on MC. Successful completion of the study aims will improve the understanding of risk factors, set the stage for more scientifically grounded future research, and potentially suggest new interventions for a disease that is currently poorly understood.
Study:
NCT02699333
Study Brief:
Protocol Section:
NCT02699333