On this occasion, Prof. Dr. Dr. Ghazaleh Tabatabai, Head of the Department of "Neurology and Interdisciplinary Neuro-Oncology", explains in an interview with the Hertie Foundation (GHS) which therapeutic approaches she is using in the fight against brain tumors, how she plans to combat metastasis in the meninges with a new immunotherapy study, and why medical progress sometimes cannot be immediately applied in treatment.