Of note, the enrichment of ABCA1 transcripts in monocytes/macrophages of non-responders turned out to be the most significant among all melanoma-infiltrating CD45+ cells (T lymphocytes, B lymphocytes, etc.; ABCA1 NR vs All = 1.40; P = 5.79 × 10-212; Wilcoxon rank sum test) (Supplementary Fig. 7 and Supplementary Table 4). This evidence concerns the gene PTPRC and melanoma.