Moderna and Merck Cancer Vaccine Data Leaks Ahead of ESMO Debut

By Andrew Joseph and Adam Feuerstein · STAT News · 2026-10-23

STAT News reports that the highly anticipated results for the Moderna-Merck melanoma vaccine were released prematurely due to an embargo breach at the European Society for Medical Oncology conference in Madrid. The unexpected leak forced a sudden shift in schedule for the meeting

STAT News reports that the highly anticipated results for the Moderna-Merck melanoma vaccine were released prematurely due to an embargo breach at the European Society for Medical Oncology conference in Madrid. The unexpected leak forced a sudden shift in schedule for the meeting