I am going to analysis of CNV data of Bladder cancer. My specific aim is to identify the most commonly altered region in the urothelial bladder carcinoma. In this regard I have planned to retrieved the data from GEO and cBioportal. I want to consider more CNV data but unfortunately failed to collect the more CNV data of Bladder cancer. I don't know whether TCGA will provide us to access the Bladder Cancer CNV data. In addition to this I have downloaded three files of Bladder cancer CNV data from GEO. But in GEO they have provided the raw data. So i cant understand how to process it further. Hence, my request if you kindly assist me from where i can get the more Bladder cancer CNV data and how shall I process if then I shall be highly obliged.