CAR-T cell Therapies in Glioblastoma: a first look

Glioblastoma is an aggressive malignancy with a poor prognosis. The current standard of care for newly diagnosed glioblastoma patients includes surgery to the extent, temozolomide combined with radiotherapy, and alternating electric fields therapy. After recurrence, there is no standard therapy and survival is less than 9 months. Recurrent glioblastoma offers a unique opportunity to investigate new treatment approaches in a malignancy known for remarkable genetic heterogeneity, immunosuppressive microenvironment and partially permissive anatomical blood brain barrier (BBB). Results from three first-in-man CAR-T cell trials targeting IL13Rα2, Her2/CMV and EGFRvIII have recently been reported. Each one of these trials addresses important questions, such as T cell trafficking to CNS, engraftment and persistence, tumor microenvironment (TME) remodeling, and monitoring of glioma response to chimeric antigen receptor (CAR) T cells. Objective radiological responses have been reported. Here, we discuss and summarize the results of these trials and suggest opportunities for the field.

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