Similarly, WGS of two spinal pilocytic astrocytomas did not reveal evidence of KIAA1549-BRAF fusions, which are observed in more than 60% of intracranial pilocytic astrocytomas40, but described less frequently in low grade spinal astrocytomas (25–40%)41,42. The gene discussed is KIAA1549; the disease is spinal cord astrocytoma.