Vaccine Maker Halts Trial on mRNA Cancer Shot

The vaccine did not perform well in a clinical trial.

Vaccine Maker Halts Trial on mRNA Cancer Shot

TL;DR

  • BioNTech is terminating a clinical trial for an experimental mRNA cancer vaccine.
  • The trial was a phase 2 study testing the vaccine in patients with colorectal cancer.
  • Genentech is a partner in the development of the vaccine.
  • A monitoring board recommended halting the trial due to survival imbalances.
  • The trial continued past October 2025 because efficacy data were not yet mature or reliable.
  • The primary endpoint could not be evaluated due to insufficient follow-up time.