I am trying to use CBioportal to find out the mRNA expression between normal vs tumor cases of one gene but could not find any instructions how I can do that. When I use this database I only see option for
When querying 2 or more studies, cBioPortal only support mutaiton and CNA. After selecting one cancer study, you would see expression profile if available for the selected study. However, most of the expression z-score profiles are calculated based on a reference population of tumor samples. Normal data integration is in the roadmap of cBioProtal and will be available in the near future.