What is the unit of TCGA RNA-seq data downloaded from cBioPortal?

Question

[Amy]

Hi,

Many thanks in advance! I downloaded RNA-seq data of lung adenocarcinoma from cBioPortal: http://www.cbioportal.org/study?id=luad_tcga_pub#summary

This data includes the file entitled data_RNA_Seq_v2_expression_median.txt and my question is what is the unit of figures included in this file??

I checked the description about this file included in the downloaded data and also spent hours to figure out if it's RPKM, read count etc, but couldn't find a clue. Any comment would be greatly appreciated!!!

Thank you so much,

Amy