How is TCGA RNASeqV2 processed? What units are used?
RNASeqV2 from TCGA is processed and normalized using RSEM. Specifically, the RNASeq
V2 data in cBioPortal corresponds to the rsem.genes.normalized_results
file from TCGA. A more detailed explanation of RSEM output can be
found here. cBioPortal then calculates z-scores as described above in
What are mRNA and microRNA Z-Scores?