TERT and glioblastoma: Predicts survival outcomes and treatment response. Mutations of TERT promoter were correlated to a dismal prognosis. Point mutations of C228T and C250T are correlated with a worse prognosis and shorter survival rates. Alleles of rs2736100 and rs10069690 are correlated with a higher risk for developing GBM, while TERTp and rs2853669 predict shorter survival rates.