In a basket study of vemurafenib in adults with BRAF V600E-mutated gliomas, the response rate of adults with PXA was high (43%; 3/7) and similar to pediatric patients, but the response rate in GBM and anaplastic astrocytoma was much lower at 9% (1/11) [15]. The gene discussed is BRAF; the disease is pleomorphic xanthoastrocytoma.