In response to melanoma targets mel526 and Malme-3M, which both express gp100 and MART-1 and are HLA-A*0201 positive, the two endogenous TAA-specific responses (samples from patients 132 and 461) also exhibited robust functional responses directly ex vivo (Table 1; 36.8%–87%), and these responses were specific as they had little response to A375, a HLA-A*0201-positive melanoma cell that does not express gp100 or MART-1 and served as a negative control for antigen-specific killing (Table 1; 2.7% and 3%). This evidence concerns the gene PMEL and melanoma.