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SER-155

Phase 1

Allogeneic Hematopoietic Stem Cell Transplantation | Small molecule | Other |Seres Therapeutics, Inc.|Last Updated: Oct 1, 2024

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment60
FDA Designations
BREAKTHROUGH_THERAPYFAST_TRACK
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04995653A Multiple Dose Study to Evaluate Safety, Tolerability, PK, and Efficacy of SER-155 in Adults Undergoing HSCTPHASE1 COMPLETED 60Nov 24, 2021Jul 23, 2024Oct 1, 202413 United States
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Study Endpoints
Primary Endpoints
Safety and tolerability of SER-155, including incidence and severity of adverse events, serious adverse events, or adverse events of special interest
Day 100

Incidence and severity of participants with adverse events, serious adverse events, or adverse events of special interest

Engraftment of SER-155
Day 100

Prevalence of SER-155 strains in subject stool measured before and after treatment courses

Secondary Endpoints
Abundance of Enterococcus and Enterobacteriaceae
Day 100
Combined and individual incidence of bloodstream infections, gastrointestinal infections, and acute Graft-versus Host Disease
Day 100
Incidence and duration of febrile neutropenia
Day 100
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort 1 - Open Label StudyEXPERIMENTALVancomycin \& SER-155
Cohort 2 - Randomized, Double-Blind, Placebo-Controlled StudyEXPERIMENTALVancomycin \& SER-155 OR Vancomycin placebo \& SER-155 placebo
Interventions
NameTypeDescription
Vancomycin Pre-TreatmentDRUGFour times daily dosing with Vancomycin
Vancomycin PlaceboDRUGFour times daily dosing with Vancomycin Placebo
SER-155DRUGOnce daily dosing with SER-155
SER-155 PlaceboDRUGOnce daily dosing with SER-155 placebo
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: * Male and female subjects ≥ 18 years of age undergoing HSCT. * Planning to undergo allogeneic hematopoietic stem cell transplantation from a human leukocyte antigen matched related donor, haploidentical related donor, HLA-matched unrelated donor, or HLA 1-antigen mismatched unr...

Countries:United States
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