Caroline Kimberly Pocher's questions to Seres Therapeutics Inc (MCRB) leadership • Q4 2024
Question
Caroline Kimberly Pocher from JPMorgan Chase & Co., on behalf of Tessa Romero, asked how the recent FDA feedback on SER-155 aligned with the company's expectations, why the FDA recommended a Phase II study, and what the key differences would be between a standalone Phase II and a seamless Phase II/III trial design.
Answer
Eric Shaff, President and CEO, characterized the FDA feedback as constructive and robust, noting that the Breakthrough Therapy designation signals the agency's recognition of the high unmet need. Lisa von Moltke, CMO, elaborated that the primary difference with a seamless Phase II/III study is the requirement to prespecify and finalize more details upfront, which can take longer. She suggested the FDA's recommendation for more data is reasonable given the relatively small dataset from the initial Phase Ib study.