CD4 and neoplasm: For instance, we found a higher density of tumor‐infiltrated CD8+, which is in line with previous studies, where increased amounts of CD8+, CD4+, and other immune cells in primary cutaneous melanoma correlated with prolonged survival from patients.[51, 52] However, we did not monitor survival but slight tumor reduction after oxPMEL vaccination, and we suspect that stronger effects would have been observed with longer monitoring.