Autologous Dendritic Cells, Metronomic Cyclophosphamide and Checkpoint Blockade in Children With Relapsed HGG

Summary

This phase I/II trials evaluates the feasibility, safety and efficacy of an individualized cancer vaccine, based on autologous, tumor-lysate loaded dendritic cells in children and adolescents with relapsed high-grade gliomas. In addition, regulatory T cells are depleted by a short cycle of metronomic cyclophosphamide upfront of the vaccine in order to facilitate induction of immune responses. Therapeutic DC vaccines are followed by four cycles of Nivo/Ipi double checkpoint blockade and a Nivolumab monotherapy maintenance in order to optimize the induced T-cell response.

Timeline

Start

2018-02-07

Primary completion

2024-07-31

Completion

2024-07-31

Publications

• Results Lohr M, Freitag B, Technau A, Krauss J, Monoranu CM, Rachor J, Lutz MB, Hagemann C, Kessler AF, Linsenmann T, Wolfl M, Ernestus RI, Engelhardt S, Gelbrich G, Schlegel PG, Eyrich M. High-grade glioma associated immunosuppression does not prevent immune responses induced by therapeutic vaccines in combination with Treg depletion. Cancer Immunol Immunother. 2018 Oct;67(10):1545-1558. doi: 10.1007/s00262-018-2214-0. Epub 2018 Jul 27.
• Results Eyrich M, Schreiber SC, Rachor J, Krauss J, Pauwels F, Hain J, Wolfl M, Lutz MB, de Vleeschouwer S, Schlegel PG, Van Gool SW. Development and validation of a fully GMP-compliant production process of autologous, tumor-lysate-pulsed dendritic cells. Cytotherapy. 2014 Jul;16(7):946-64. doi: 10.1016/j.jcyt.2014.02.017. Epub 2014 May 13.

Drugs

Indications