Five of the 14 proteins, namely CTSD [GenBank Gene ID: 1509][9,10], PHB [GenBank Gene ID: 5245][11,12], chondroitin sulfate proteoglycan 4 [GenBank Gene ID: 1464] [13], phosphatidylethanolamine-binding protein 1 [GenBank Gene ID: 5037] [14], and ribosomal protein SA [GenBank Gene ID: 3921] [15] were related with melanoma. Here, CTSD is linked to melanoma.