Phase 2 Study of VE303 for Prevention of Recurrent Clostridioides Difficile Infection

CONSORTIUM was a randomized, placebo-controlled double-blind Phase 2 study to evaluate safety, tolerability, pharmacokinetics/pharmacodynamics, and efficacy of VE303 in prevention of subsequent Clostridioides difficile infection (CDI) -associated diarrhea compared with placebo following completion of at least 1 successful course of standard-of-care (SOC) antibiotics. VE303 or placebo capsules were taken orally for 14 days after completion of a course of SOC antibiotics. The proportions of subjects experiencing a confirmed CDI recurrence within 8 weeks after the first dose of study treatment were compared across the study arms, to understand the efficacy of VE303 in preventing rCDI. The study originally planned to enroll 146 subjects but through a protocol amendment was revised to an enrollment target of 60 to 80 subjects with a prior history of CDI diarrhea or first occurrence of CDI diarrhea with a higher risk for recurrence. Subjects must have had a positive C. difficile stool sample and have responded to SOC antibiotic treatment.