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SER 155

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Drug Profile

SER 155

Alternative Names: SER-155

Latest Information Update: 05 Jun 2025

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At a glance

  • Originator Seres Therapeutics
  • Developer Memorial Sloan-Kettering Cancer Center; Seres Therapeutics
  • Class Bacteria
  • Mechanism of Action Bacteria replacements; Gastrointestinal microbiome modulators
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    No
  • New Molecular Entity No
  • Available For Licensing Yes

Highest Development Phases

  • Phase I Bacteraemia; Enterocolitis; Graft-versus-host disease; Intra-abdominal infections

Most Recent Events

  • 27 May 2025 Pharmacodynamics data from a phase-Ib trial in Graft-versus-host disease released by Seres Therapeutics
  • 15 May 2025 Seres Therapeutics plans a phase III trial (PO)
  • 03 Mar 2025 Seres Therapeutics anticipates submitting a proposed protocol for a clinical trial of SER 155 in allo-HSCT to the US FDA, in the second quarter of 2025

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