RP1 is a selectively replication competent herpes simplex virus type 1(HSV-1). This is a Phase 1/2, open-label, multicenter repeat-dosing study of RP1 alone and in combination with nivolumab in patients with advanced malignancies, and contains both single agent dose escalation, dose expansion to include nivolumab, and the combination in multiple Phase 2 cohorts in individual tumor types.
