Without revealing specific details, GSK announced that it is terminating the development of its investigational herpes simplex virus vaccine after failing to meet the study’s primary efficacy objective.

GSK Plc’s experimental vaccine for herpes failed in an early-stage trial, halting an effort to bring the first shot for the condition to market.

British drugmaker GSK said on Wednesday its experimental herpes simplex virus (HSV) vaccine candidate failed to meet the main goal of a mid-stage trial and would not be taken forward to a late-stage trial.

GSK's HSV vaccine candidate fails mid-stage trial, will not progress to late-stage trial. No safety concerns observed.

GSK plc GSK announced that its therapeutic herpes simplex virus (HSV) vaccine candidate, GSK3943104, did not meet the primary endpoint in the combined phase I/II proof-of-concept study. The phase I/II TH HSV REC-003 study evaluated the clinical efficacy of the early-stage HSV vaccine candidate GSK3943104.

GSK has announced that Part II of the Phase I/II TH HSV REC-003 trial of its therapeutic herpes simplex virus (HSV) vaccine candidate, GSK3943104, did not meet its primary efficacy endpoint. The results were evidenced in an analysis of primary objective data from the Phase II part of the trial.