A mouse study has demonstrated the potential of a special immune cell that targets a key protein in tumor growth that helps stop brain cancer. Brain cancer comes in many forms, ranging from more easily treatable benign forms that may trigger gradual loss of brain functions, to malignant forms that can in many cases prove fatal. While there have been improvements in the current standard treatments, patients with glioblastoma (GBM), the most common and aggressive form of brain tumor, still suffer from a median survival rate of only 14.6 months and 5-year overall survival rates of less than 10%.