Help With Cbioportal expression data

Question

[daniela.paola.s.p]

Hi everyone,

I need to set up a database for survival analysis of some genes using data from the TCGA HNSC, I already got the clinical data from the patients through the Cbioportal, now I would need the gene expression information. I saw that cbioportal can provide me with some spreadsheets with these data, however my question is, how can I use these data for my analysis?

The tables provided are these, however (due to lack of knowledge), I don't understand which one I can use.

hnsc_tcga/data_RNA_Seq_v2_expression_median.txt

hnsc_tcga/data_RNA_Seq_v2_mRNA_median_all_sample_Zscores.txt

hnsc_tcga/data_RNA_Seq_v2_mRNA_median_Zscores.txt

Thanks for the answer!