About this trial

The overall objective of the RESTORATiVE303 study is to evaluate the safety and the Clostridioides difficile infection (CDI) recurrence rate at Week 8 in participants who receive a 14-day course of VE303 or matching placebo. The objectives and endpoints are identical for Stage 1 (recurrent CDI) and Stage 2 (high-risk primary CDI).

Eligibility criteria

Qualifiers

Age ≥ 12 years where permitted, and ≥ 18 years in other locations, with a laboratory-confirmed qualifying episode of CDI and at least 1 prior occurrence within the last 6 months

Age ≥ 75 years with a laboratory-confirmed qualifying episode of CDI

Age ≥ 65 years

Kidney dysfunction, defined as estimated creatinine clearance < 60 mL/min/1.73 m² at the time of the qualifying CDI episode

Disqualifiers

History of chronic diarrhea (defined as ≥ 3 loose stools per day lasting for at least 4 weeks) within 3 months prior to randomization that is not related to CDI

Known or suspected toxic megacolon or small bowel ileus at the time of randomization

History of confirmed celiac disease, inflammatory bowel disease, microscopic colitis, short gut, GI tract fistulas, or a recent episode (within 6 months of screening) of intestinal ischemia or ischemic colitis

Receipt of bezlotoxumab during the course of SoC antibiotic treatment for the qualifying CDI episode

Trial design

Treatments tested in this trial

  • VE303
  • Placebo

Treatment groups

852 Participants
are divided into 2 treatment groups

Locations

215
Australia
Concord Repatriation General Hospital2139, ConcordNew South Wales, Australia
Westmead Hospital2148, WestmeadNew South Wales, Australia
Monash Health3168, ClaytonVictoria, Australia
Melbourne Health3050, ParkvilleVictoria, Australia

Sponsors and collaborators

Vedanta Biosciences, Inc.

Lead sponsor