AMPLIFYing NEOepitope-specific VACcine Responses in Progressive Diffuse Glioma
Summary
The trial will address safety and tolerability of the combination of the IDH1R132H-specific vaccine with checkpoint blockade and seeks to explore predictive biomarkers for response to checkpoint blockade in post-treatment tumor tissue. The study will enroll 48 evaluable patients (presumably, 60 in total) with IDH1R132H-mutated gliomas with an unfavorable molecular profile (no 1p/19q co-deletion, nuclear ATRX- loss) progressive after radiotherapy and alkylating chemotherapy eligible for re-resection. After diagnosis of recurrent disease on imaging patients will be randomized assigned in a 1:1:2 ratio into three arms. Arm 1 (12 patients) will receive three IDH1R132H peptide vaccines alone in two week intervals. Arm 2 (12 patients) will receive three IDH1R132H peptide vaccines in combination with three doses of Avelumab in two week intervals. Arm 3 (24 patients) will receive three doses of Avelumab in two week intervals. After 6 weeks of treatment patients (Arms 1-3) will undergo planned re-resection. Four weeks after the operation treatment will be resumed consisting of five additional vaccines (Arm 1+2) in 4 week intervals, followed by maintenance vaccines until progression in three months' intervals after a pause of 16 weeks. Avelumab will be administered in monthly intervals in Arms 2 and 3 starting four weeks after the operation until progression. Key outcome parameters will be safety and immunogenicity (Arms 1 and 2) based on peripheral and intratumoral immune analyses assessed 9 months after re-resection.
Timeline
- Start
- 2018-10-19
- Primary completion
- 2024-09-20
- Completion
- 2024-09-20
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Avelumab | Monoclonal antibody | 10 mg/kg | Intravenous |
| Subject | IDH1R132H peptide vaccine | Peptide | 300 ug | Subcutaneous |