This exploratory trial will have three parts. Part A is a dose escalation part, Part B is an expanded safety and dose evaluation part, and Part C is a safety and immunogenicity evaluation part in individuals with recurrent HSV-2 genital herpes. Part A will focus on the safety evaluations, and in addition, vaccine-induced immune responses (specifically neutralizing antibodies) will also be analyzed to assess if there is a dose-response. Part B of the trial will expand the safety characterization for two dose levels of BNT163 selected based on Part A data and will also enable a more comprehensive assessment of the impact of pre-existing immunity to HSV-1 and -2 on the safety and immune responses to BNT163. Part C will evaluate safety and immunogenicity of BNT163 compared to a placebo in a three-dose regimen in participants with a history of HSV-2 recurrent genital herpes.
Phase 1 trials primarily test safety and dosing in a small number of participants (typically 20–100). Results do not yet speak to efficacy. FDA approval is typically many years away from this stage.
Enrollment is complete. The trial is in its follow-up or data collection phase — a readout may occur on or near the primary completion date.
BioNTech SE (BNTX) is the sponsoring company for this trial. BiotechSign currently grades this company F (20/100) based on composite catalyst signals across its full pipeline. This trial is one data point in that overall catalyst picture.