Clinical trial Recruiting at 1 site Phase2; Phase3 Interventional Ages 18 and up

Vedolizumab to prevent ICI-related diarrhea or colitis in cancer patients

Official title: VERIFY: Vedolizumab for the Prevention of Immune Checkpoint Inhibitor Related Diarrhea or Colitis in Patients With Cancer: A Randomized, Double-Blinded, Placebo Controlled Trial

Run by AHS Cancer Control Alberta · NCT06337695 · Data updated 2026-11-12

This study tests whether vedolizumab can prevent immune checkpoint inhibitor–related diarrhea or colitis in adults with unresectable or metastatic melanoma, lung, or kidney cancer starting immunotherapy.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment36 (estimated)
SponsorAHS Cancer Control Alberta
Academic / other
Drugs / interventionsvedolizumab, immunotherapy
Locations2 sites (Calgary, Alberta and 1 other locations)
StatusRecruiting
StartedAugust 13, 2026
Main results expectedDecember 1, 2030
Study endsDecember 1, 2030
Registry record updatedAugust 27, 2026
Trial IDNCT06337695 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18 and older with unresectable advanced melanoma, lung, or renal cancer planned to start SOC immunotherapy and who have elevated fecal calprotectin (>100 μg/g) within 4 weeks of first ICI dose.

Probably not a fit

Patients who do not develop elevated fecal calprotectin or who do not experience ICI-related GI adverse events may see no direct benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

VERIFY is a multicenter, randomized, double-blind, placebo-controlled trial evaluating vedolizumab, given as six intravenous doses over 6 months in addition to ongoing immunotherapy, to prevent gut inflammation related to immune checkpoint inhibitors. Eligible participants have high risk for ICI-related diarrhea/colitis evidenced by elevated fecal calprotectin after starting ICI. Primary comparison is vedolizumab versus placebo with a safety and efficacy assessment over 12 months of follow-up. The study aims to determine if gut-targeted therapy can reduce incidence and severity of ICI-associated gastrointestinal adverse events in unresectable stage III or metastatic stage IV melanoma, lung, or renal cancer. Enrollment is in Alberta, Canada, under lead sponsor AHS Cancer Control Alberta.

Why it matters

Potential benefit: If successful, the approach could reduce ICI-related diarrhea and colitis, improving patient comfort and allowing uninterrupted cancer therapy.

How similar studies have gone: Prior studies of gut-targeted therapies suggest potential in preventing GI immune-related adverse events, but this specific prophylactic use with vedolizumab is investigational.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Signed informed consent prior to initiation of any study specific activities or procedures
2. Adult patient ≥18 years old
3. Diagnosed with unresectable advanced stage III or metastatic stage IV malignant melanoma, lung, or renal cancer
4. Planned for initiation of SOC treatment with any immunotherapy and develop an elevated fecal calprotectin \> 100 μg/g within 4 weeks of first ICI dose
5. Ability to and willingness to adhere to the randomized treatment interventions (vedolizumab or placebo), administered intravenously
6. Women of childbearing potential (WOCBP) must have a negative serum or urine pregnancy test at the time of screening. WOCBP is defined as any female who has experienced menarche and who has not undergone surgical sterilization (hysterectomy or bilateral oophorectomy or bilateral salpingectomy) and is not postmenopausal. Menopause is defined as 12 months of amenorrhea in a woman over age 45 years in the absence of other biological or physiological causes.
7. As per the Health Canada product monograph, WOCBP are strongly recommended to use adequate contraception to prevent pregnancy and to continue its use for at least 6 months after the last study visit.

Note: abstinence is acceptable if this is established and preferred contraception for the patient and is accepted as a local standard.

Exclusion Criteria:

1. Condition(s) for which vedolizumab is contraindicated (e.g., hypersensitivity reaction, known allergic reaction to vedolizumab or its components)
2. Current or prior use of vedolizumab
3. Presence of inflammatory bowel disease (Crohn's disease, ulcerative colitis), indeterminate colitis, segmental colitis associated with diverticulosis or microscopic colitis
4. Presence of ileostomy, colostomy, or short bowel syndrome
5. Presence of known luminal gastrointestinal metastases at baseline
6. Presence of significant pre-existing autoimmune disease (at investigator's discretion)
7. Presence of severe infection(s) or opportunistic infection(s)
8. Active enteric infection with viral, bacterial, or parasitic pathogens
9. Presence of untreated latent or active tuberculosis, or untreated chronic hepatitis B virus. If there is a clinical suspicion of either, it is at the discretion of the Investigator to order the appropriate work-up.
10. Baseline ECOG status grade ≥3
11. Pregnancy or lactation (no exclusion for pregnant partner)
12. Treatment with another investigational product within 8 weeks of randomization
13. Requirement for baseline anti-diarrheal treatment(s) (including but not limited to loperamide, diphenoxylate-atropine, octreotide, tincture of opium), anticholinergic drug(s), or opioid-based analgesic(s) used specifically for diarrhea control within 14 days of randomization
14. Any condition or diagnosis, that could in the opinion of the Qualified Investigator or delegate interfere with the participant's ability to comply with study instructions, might confound the interpretation of the study results, or put the participant at risk

Where it's running

  • Arthur J.E. Child Comprehensive Cancer Centre
    Calgary, Alberta, Canada
    Recruiting
  • Cross Cancer Institute
    Edmonton, Alberta, Canada
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.