In gHRR carriers CBZ was not superior to ARSi in terms of rPFS (2.5 vs. 3.0 m, p=0.8), cPFS (2.5 vs. 2.4 m, p=0.8) and OS (4.5 vs. 3.7, p=0.8)....However, the outcomes in gHRR carriers are poor with either CBZ or ARSi supporting the need of novel therapies in this setting.