I am using the cBioportal to get mRNA expression data for various cancer studies (e.g. lung, liver, thyroid etc). However, I need expression levels from normal/control samples in order to make comparisons to these tumor samples from cBioportal.
Does anyone know or have used control/normal samples from TCGA and can point me to it?
Do you know of a good resource (preferably RNASeq V2 RSEM normalized expression values or z-scores) for control/normal samples?
How would I match these tumor and normal samples in order to make better comparisons? In addition, what are some tips to make comparisons between normal data and tumor data?
Any help is appreciated. I am a little lost.