SEPTIN4 and melanoma: For MART-specific clones, cytotoxicity reached 80-90% against A*0201-positive melanocyte lines compared to 40-80% against A2-positive melanoma lines by high RE clones (p = 0.19), and 40-50% against melanocytes versus 15-25% against melanoma cells by intermediate RE clones (p = 0.02).