When treated with Temsirolimus in the skull base meningioma model, median OS in both groups (KLF4wt and KLF4K409Q) was prolonged by 9 days...p < 0.001) in comparison with non-treated mice...the median survival of the KLF4K409Q group was further increased by 2.5 days (26 vs 28.5 days, p= 0.050)...Taken together, these data identify Temsirolimus as a promising agent preferentially in KLF4K409Q skull base tumors.