A Phase 3, Randomized, Double-Blind, Placebo- and Active-Comparator- Controlled Clinical study of Adjuvant V940 (mRNA-4157) Plus Pembrolizumab Versus Adjuvant Placebo Plus Pembrolizumab in Participants With High-Risk Stage II-IV Melanoma

The purpose of this study is to compare V940 plus pembro given after surgery to a placebo plus pembro given after surgery and to study how effective the study drug is. A placebo looks like a study drug, but it has no active ingredients. V940 has not yet been approved by the Food and Drug Administration (FDA). Pembrolizumab is FDA approved but it has not been approved for use with V940.

Are you Eligible? (Inclusion Criteria)

• Must be 18 years old or older - Cannot have ocular and/or mucosal melanoma - No COVID-19 and seasonal flu vaccines within 30 days before the first dose of the study drug