The purpose of this study is to evaluate the clinical efficacy and safety of Tislelizumab (one anti-PD-1 antibody same as nivolumab approved in China) in combination with bevacizumab in patients with recurrent or progressive glioblastoma (GBM) who have progressed on bevacizumab with or without PTEN or TERT gene mutations.
Written informed consent and HIPAA authorization obtained from the subject/legal representative prior to performing any protocol-related procedures, including screening evaluations
Subjects must be willing and able to comply with scheduled visits, treatment schedule, laboratory testing, and other requirements of thestudy, including disease assessment by MRI and tumor in situ fluid (TISF) collection
Histologically confirmed diagnosis of glioma
Resection surgery done at the study center (Henan Provincial People'sHospital), with an reservoir intraoperatively implanted connecting the surgical cavity and the subscalp for postoperative noninvasive TISF collection
More than two recurrences of GBM
Presence of extracranial metastatic, significant leptomeningeal disease or tumors primarily localized to the brainstem or spinal cord
Any serious or uncontrolled medical disorder that, in the opinion of the investigator, may increase the risk associated with study participation or study drug administration, impair the ability of the subject to receive protocol therapy, or interfere with the interpretation of study results
Subjects with active, known or suspected autoimmune disease. Subjects with vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring chronic and systemic immunosuppressive treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll. Subjects have any other condition requiring systemic treatment with corticosteroids or other immunosuppressive agents within 14 days. Inhaled or topical steroids and adrenal replacement doses >10mg daily prednisone equivalent are permitted in absence of active autoimmune disease