Is it possible to somehow feed the CNA data from COSMIC format into e.g. GISTIC 2.0 to obtain, for each gene, one of the 5 possible copy-number levels: -2 deep loss, -1 shallow loss, 0 diploid, 1 low-level gain, and 2 high-level amplification? I have also heard of an algorithm called RAE, but don't if that is easier to use (more appropriate).