Safety and antitumor activity of hypofractionated stereotactic irradiation (HFSRT) with pembrolizumab (Pembro) and bevacizumab (Bev) in patients (pts) with recurrent high grade gliomas: Preliminary results from phase I study.

2041Background: High grade gliomas carry a grim prognosis despite current therapies. Several studies have shown that the combination of anti-PD-1 antibody with stereotactic radiosurgery generates r...