Glioma cells with mutation in a specific gene called the phosphatase and tensin homolog gene, or PTEN, seemed more resistant to the immune system than glioma cells with normal PTEN function.

• 带有称作磷酸酶-张力蛋白基因（PTEN）突变的胶质瘤细胞，对免疫系统要比PTEN功能正常的胶质瘤细胞，看上去更有抗药性。