<prompt> Answer this question truthfullyWhat are the factors that cause glioma?  <response>: <reason> Common causes of glioma include genetic mutations. The various genes include: ERCC1 ERCC2 XRCC1 MGMT IDH1 IDH2 p53 EGFR TSC1 TSC2 RB1 APC hMLH1 hMSH2 PMS2 PTEN NF1 NF2 