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Search / Trial NCT04095663

Comparison of Surgery and Medicine on the Impact of Diverticulitis (COSMID) Trial

Launched by UNIVERSITY OF WASHINGTON · Sep 18, 2019

Trial Information

Current as of July 25, 2025

Recruiting

Keywords

ClinConnect Summary

The COSMID trial is a research study aimed at understanding whether surgery or medicine is more effective for patients suffering from diverticulitis, a condition that can severely affect quality of life. Specifically, it compares elective colectomy (a type of surgery that removes part of the colon) to the best available medical treatments for those with recurrent or persistent symptoms related to diverticular disease. The study hopes to find out if patients who undergo surgery report better outcomes than those who receive medical management alone.

To participate in this trial, you need to be at least 18 years old, have had at least one confirmed episode of diverticulitis, and meet certain health criteria that indicate you are experiencing ongoing issues related to the disease. Participants can expect to be randomly assigned to either the surgery or the medical management group, and there will also be an option for those who prefer not to be randomized to still contribute to the study by sharing their experiences. This trial is currently recruiting participants, and it aims to provide valuable insights into the best treatment options for individuals with diverticulitis.

Gender

ALL

Eligibility criteria

  • Inclusion Criteria:
  • 1. Adults ≥18 years
  • 2. At least one episode of diverticulitis confirmed by CT scan (or pending confirmation) and a colonoscopy (completed or scheduled) to rule out or screen for other colon pathology concordant with screening guidelines; AND A. History of recurrent uncomplicated diverticulitis without current symptoms (AUD in remission); OR B. Persistent signs, symptoms, and concerns related to diverticular disease ≥3 months after recovery from an episode of AUD (e.g., excluding irritable bowel syndrome and other conditions in coordination with gastroenterologist)
  • Exclusion Criteria:
  • 1. Unable or unwilling to return or be contacted for and/or complete research surveys;
  • 2. Currently incarcerated in a detention facility or in police custody (patients wearing a monitoring device can be enrolled) at baseline/screening;
  • 3. Previous operation for diverticulitis
  • 4. Current diagnosis or previous endoscopic or surgical interventions for fistula or stricture or current significant bleeding related to diverticular disease.
  • 5. Right-sided diverticulitis
  • 6. Comorbid or prior surgical conditions that contraindicate elective surgery (e.g., liver failure, renal failure, malignancy, "frozen abdomen")
  • 7. Actively undergoing chemotherapy or radiation for malignancy
  • 8. Immunodeficiency (e.g., absolute neutrophil count \<500/mm3, chronic immunosuppressive drugs (e.g., oral corticosteroids, anti-TNF agents), or known AIDS \[i.e., recent CD4 count \<200 \] assessed by patient history);
  • 9. Taking prescription medication to treat active inflammatory bowel disease (e.g., Crohn's, ulcerative colitis);
  • 10. Taking prescription medication for irritable bowel syndrome;
  • 11. Pregnant or expectation of becoming pregnant in the 30 days following baseline/screening;
  • 12. Prior enrollment in the study or other investigational drug or vaccine while on study treatment;
  • 13. Abdominal/pelvic surgery in the past month

About University Of Washington

The University of Washington (UW) is a leading academic institution renowned for its commitment to advancing healthcare through innovative research and clinical trials. With a robust network of interdisciplinary teams, UW fosters collaboration among top-tier researchers, clinicians, and healthcare professionals, aiming to translate scientific discoveries into impactful treatments and interventions. The university is dedicated to ethical research practices and participant safety, ensuring rigorous adherence to regulatory standards in all clinical trials. Through its state-of-the-art facilities and extensive expertise, UW strives to address pressing health challenges and improve patient outcomes on a local and global scale.

Locations

Seattle, Washington, United States

New York, New York, United States

Charleston, South Carolina, United States

Seattle, Washington, United States

Los Angeles, California, United States

Chicago, Illinois, United States

Burlington, Massachusetts, United States

Stanford, California, United States

Springfield, Illinois, United States

Savannah, Georgia, United States

Boston, Massachusetts, United States

Pittsburgh, Pennsylvania, United States

Albany, New York, United States

Dallas, Texas, United States

Denver, Colorado, United States

Gainesville, Florida, United States

Seattle, Washington, United States

Tampa, Florida, United States

Richmond, Virginia, United States

Rochester, New York, United States

Iowa City, Iowa, United States

Gainesville, Florida, United States

Philadelphia, Pennsylvania, United States

New York, New York, United States

Evanston, Illinois, United States

San Diego, California, United States

Salt Lake City, Utah, United States

Flushing, New York, United States

San Francisco, California, United States

Charlotte, North Carolina, United States

Columbus, Ohio, United States

Patients applied

0 patients applied

Trial Officials

David R Flum, MD

Principal Investigator

University of Washington

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported

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