New England Journal of Medicine Publishes Data from ECOSPOR lll Phase 3 Study Evaluating Investigational Microbiome Therapeutic SER-109 in Recurrent C. Difficile Infection

Jan 19, 2022

Seres+Therapeutics%2C+Inc. (Nasdaq: MCRB), a leading microbiome therapeutics company, today announced the publication in the New England Journal of Medicine (NEJM) of data from its Phase 3 ECOSPOR III study evaluating SER-109, an investigational oral microbiome therapeutic for the treatment of recurrent C. difficile infection (rCDI). The publication highlights data that found SER-109 to be superior to placebo in reducing CDI recurrence, with 88% of SER-109 patients achieving a sustained clinical response compared to 60% on placebo. SER-109 was also found to be well tolerated, with a side effect profile comparable to placebo and no serious drug-related adverse events observed. Seres expects to finalize a BLA submission for SER-109 with the U.S. Food and Drug Administration (FDA) in mid-2022.

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