Neoadjuvant Carilizumab and Apatinib for Recurrent High-Grade Glioma

Inclusion Criteria: 1. Written informed consent. 2. Age 18-70 years old, both male and female. 3. After biopsy or surgery, the postoperative pathological diagnosis was WHO III-IV glioma. 4. Patients in whom surgery can be safely delayed for a minimum period of 2 weeks following the administration of the first dose of nivolumab, in the opinion of the investigator. 5. KPS score ≥60； 6. Life expectancy \>12 weeks. 7. Adequate organ function defined by: 1. HGB≥110g/L； 2. WBC≥3.0×109/L；NEUT≥1.5×109/L； 3. PLT ≥75×109/L； <!-- --> 1. BIL≤1.5ULN； 2. ALT and AST≤2.0×ULN； 3. creatinine \< 1.5 x ULN or estimated creatinine clearance≥50ml/min（using the Cockcroft-Gault formula） Exclusion Criteria: 1. Presence of extracranial disease. 2. Previous treatment with a PD-1, PDL-1 or CTLA-4，VEGFR targeted therapy. 3. Pregnant or breastfeeding patients. 4. Known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS). Routine testing is not required. 5. Positive tests for hepatitis B virus surface antigen (HBV sAg) or hepatitis C virus ribonucleic acid (HCV RNA) indicating active or chronic infection. 6. History of allergy to study drug components or of severe hypersensitivity reactions to any monoclonal antibodies. 7. Known drug or alcohol abuse.