To examine the role of CD300A in tumor development in humans, we analyzed the data on the single-cell RNA sequence (scRNA-seq) of human melanoma tissues, which demonstrated that CD300A is expressed on populations that express HLA-DR, ITGAX (CD11C), ITGAM (CD11B), CD14, and CD163 (Figure 6—figure supplement 1), consistent with the results of mouse melanoma. Here, CD163 is linked to melanoma.