MC1R and neoplasm: The results showed a positive correlation with CD4 + T cells (r = 0.377, p = 5.49 × 10−15, Figure 4C), macrophage cells (r = 0.207, p = 2.68 × 10−5, Figure 5E), dendritic cells (r = 0.124, p = 1.27 × 10−2, Figure 5F), and neutrophil cells (r = 0.099, p = 4.84 × 10−2, Figure 5G) and a negative significant correlation between MC1R and tumor homogeneity (r = −0.122, p = 1.42 × 10−2, Figure 5A).