Several aCGH studies of bladder cancer have been published to date and provide the identification of a number of genomic regions of DNA amplification that contain known or candidate oncogenes including cyclin D1 (CCND1) on 11q13 [7, 8], ERBB2 on 17q21 [9], MDM2 on 12q14–q15 [10], and E2F3 on 6p22 [11]. Here, CCND1 is linked to urinary bladder cancer.