Both genes are strongly expressed in various cancer types, with MAGE-A3 expression observed in 60% of malignant melanomas [7], 45% of non-small-cell lung carcinomas (NSCLC) [8], 70% of Durie-Salmon stage III multiple myelomas [9] and 37% of bladder cancers [10]. This evidence concerns the gene MAGEA3 and cancer.