Anaplastic astrocytoma (AA) is a malignant brain tumor that develops from certain star-shaped brain cells called astrocytes that make up the brain’s supportive tissue. Tumors that form from these cells are called gliomas. Similar to glioblastoma, astrocytomas tend to have tentacle-like projections that grow into surrounding tissue, which makes them difficult to completely remove surgically. They can appear in various parts of the brain and nervous system, including the cerebellum, the cerebrum, central areas of the brain, the brainstem and the spinal cord.
AA is categorized as a Grade 3 glioma and is therefore included within the group of HGGs.
AAs are a relatively rare form of HGG with an annual incidence of approximately 1,250 in the United States.
Tocagen is developing an investigational therapy to treat GBM and AA and is currently recruiting patients into its Phase 2/3 clinical trial, Toca 5. Learn about the Toca 5 trial.
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