...6 male and 5 female patients aged 9-18 yrs received treatment with NIVO...3pts had TMB 5-10mut/Mb, 5pts had TMB > 10mut/Mb (range 14-837, median 64), 3 pts enrolled on basis of RRD....This pilot study showed evidence of impressive clinical benefit particularly for relapsed GBM/AA patients for whom median survival is typically ̃6 months...