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Phase 1Update

SER-155 (Live Biotherapeutic)

Immune Checkpoint Related Enterocolitis

MCRBSeres Therapeutics
Expected catalystTBA

Catalyst overview

Event details

Drug or asset
SER-155 (Live Biotherapeutic)
Development stage
Phase 1
Event type
Update
Indication
Immune Checkpoint Related Enterocolitis

Research summary

What is being tracked?

This catalyst tracks a Phase 1 update for SER-155 (Live Biotherapeutic) in Immune Checkpoint Related Enterocolitis. The expected timing is based on the latest available company guidance and may change.

Development notes

Collab w/ MSK. 11/05/25:- IST ongoing; complete enrollment in 2025, clinical readout in early 2026. 02/12/26:- IST fully enrolled; initial SER-155 irEC clinical results, including safety and efficacy, expected early Q2 2026. 03/12/26:- Memorial Sloan Kettering SER-155 irEC IST fully enrolled; 15 patients; Q2 2026 data expected. 05/05/26:- MSK IST in irEC remains fully enrolled; clinical readout of SER-155 data expected in coming weeks (Q2 2026). 06/25/26:- Top-line SER-155 irEC data to be discussed July 8, 2026; MSK IST NCT06801067. 07/08/26:- Topline IST NCT06801067 results: 80% Day 15 response; 33% Day 43 response. Future conference presentation planned. 08/05/26:- IST NCT06801067 data reiterated; safety clean; partners sought for irEC development.

Verification

Primary source

Confirm timing and program details against the company announcement or filing.

Open source

Company

Seres Therapeutics

MCRB · NasdaqGS
Industry
Biotechnology
Pipeline assets
8
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Updated Aug 23, 2026. Dates can change; this is not investment advice.

Disclaimer: Biotech Stock Intel is an independent research platform. Information is provided for informational purposes only and is not investment or medical advice. Always verify catalyst dates against primary sources and conduct your own research.
Biotech Stock Intel© 2026 Biotech Stock Intel
AboutMethodologyTermsPrivacy