SNAI1 and cutaneous melanoma: In addition, in 469 samples of skin cutaneous melanomas from the TCGA [43], a positive correlation was found for LOXL3 gene expression with both SNAI1 and PRRX1 expression (R = 0.4 and R = 0.45, respectively), as well as for PRRX1 with SNAI1 expression (R = 0.45) (Figure 7F).