• Neoadjuvant pembrolizumab, alone or combined with vibostolimab or gebasaxturev, demonstrated a manageable safety profile in stage IIIB-D melanoma patients, with 95% experiencing at least one adverse event.
• The trial achieved pathological complete response rates of 38% for pembrolizumab/vibostolimab, 28% for pembrolizumab/gebasaxturev, and 40% for pembrolizumab monotherapy, showing promising efficacy across treatment arms.
• Most common treatment-related adverse events included pruritus, fatigue, and vitiligo, with grade 3-4 adverse events occurring in 8-28% of patients across different treatment arms.