CDKN2B and nonpapillary renal cell carcinoma: Both in CCRCC with germline VHL mutation and in sporadic CCRCC, the most relevant copy number alterations occurred at the level of 3p deletion involving the VHL gene, p9 deletion involving CDKN2A and CDKN2B genes, and of 8q amplification involving the MYC gene amplification [14].