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BNT331

Phase 1

Bacterial Vaginosis | Small molecule | Infectious Disease |BioNTech SE|Last Updated: Aug 7, 2025

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-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment102
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06469164A First-in-human Safety Trial of BNT331 Administered as Single Ascending Doses in Healthy Women and as Multiple Ascending Doses in Women Diagnosed With Bacterial VaginosisPHASE1 COMPLETED 102Jul 1, 2024Jul 31, 2025Aug 7, 20256 United States
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Study Endpoints
Primary Endpoints
Part A - Percentage of participants with adverse events (AEs) with onset after first treatment dose and until 7 days post-dose
from first dose of study treatment up to 7 days post-dose

In participants who have received at least one dose of BNT331 or placebo. For each dose level cohort of BNT331 and for the combined placebo group.

Part B - Percentage of participants with adverse events (AEs) with onset after first treatment dose and until 120 days after the first dose
from first dose of study treatment up to 120 days after first dose

In participants who have received at least one dose of BNT331 or placebo. For each dose level cohort of BNT331 and for the combined placebo group.

Part A - Percentage of participants with serious adverse events (SAEs) with onset after first treatment dose and until 7 days post-dose
from first dose of study treatment up to 7 days post-dose

In participants who have received at least one dose of BNT331 or placebo. For each dose level cohort of BNT331 and for the combined placebo group.

Part B - Percentage of participants with SAEs with onset after first treatment dose and until 120 days after the first dose
from first dose of study treatment up to 120 days after first dose

In participants who have received at least one dose of BNT331 or placebo. For each dose level cohort of BNT331 and for the combined placebo group.

Secondary Endpoints
Part A - Serum concentrations of BNT331 active substance at pre-specified timepoints
from pre-dose up to 12 days post-dose
Part B - Serum concentrations of BNT331 active substance at pre-specified timepoints
from pre-dose up to 30 days after first dose
Part A - Anti-drug antibody (ADA) prevalence and change of binding titers against BNT331 active substance in blood before study treatment and at 7 days post-dose
from pre-dose up to 7 days post-dose
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
BNT331 - Part AEXPERIMENTALSingle ascending dose levels
Placebo - Part APLACEBO_COMPARATORSingle dose
BNT331 - Part B Dose 1EXPERIMENTALFixed dose for 5 consecutive days
BNT331 - Part B Dose 2EXPERIMENTALFixed dose for 5 consecutive days
Placebo - Part BPLACEBO_COMPARATORMultiple dose
Interventions
NameTypeDescription
BNT331DRUGVaginal insert
PlaceboOTHERVaginal insert
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Eligibility Criteria
Age Range18 Years — N/A
SexFEMALE
Healthy VolunteersYes
Study Sites6

Inclusion Criteria (applicable to all participants unless otherwise specified): * Have given written informed consent by signing and dating the informed consent form (ICF) before initiation of any study-specific procedures. * Participant reported assigned female sex at birth, at least 18 years of a...

Countries:United States
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