Subsequent analysis of scRNA‐seq data from patients with skin cutaneous melanoma (SKCM) treated with a combination of PD‐1 and cytotoxic T‐lymphocyte‐associated protein 4 (CTLA‐4) mAbs revealed exclusive expression of NUPR1 in macrophages (Figure 7J,K). The gene discussed is CTLA4; the disease is cutaneous melanoma.