Survival curve of GBM patients.

<p>Twenty-five GBM cases out of 86 GBM cases presented concomitant high or low <i>ID4</i>, <i>SOX4</i> and <i>OCT-4</i> relative expresssion levels (12 GBM cases presenting high expressions and 13 low expressions for the three genes). The survival time difference between the two groups was statistically significant (<i>log rank p</i>-value = 0.014), presenting median survival time of 6 months for GBM cases presenting concomitant high expressions for the three genes compared to 18 months for GBM cases with low expressions.