The present invention describes methods of prognosticating patient survival based on an analysis of the ZEB1 gene or gene product. The present invention also describes methods of selecting and/or selecting various therapies based on the analysis of ZEB1, IDH1, PTEN, MGMT and/or RET. Further describes are systems for analyzing ZEB1, IDH1, PTEN, MGMT and/or RET as well as selecting and/or selecting the therapies.
