Cellular inhibitor of apoptosis protein 1 (cIAP1), cellular inhibitor of apoptosis protein 2 (cIAP2), and X-linked inhibitor of apoptosis protein (XIAP) are reported in 92, 37, and 26~55% of DLBCL, respectively (47, 48). This evidence concerns the gene XIAP and diffuse large B-cell lymphoma.