Detection of actionable mutations in the cerebrospinal fluid and concordance/discordance with extracranial mutations in patients with metastatic breast cancer and leptomeningeal disease.

Huppert LA, Fisch S, Her L, Hodgdon C, Brain S, Simmons C, Lai AR, Malevanchik L, Balassanian R, Vasudevan HN, Morshed R, Braunstein S, Boreta L, Majure M, Chien AJ, Rugo HS, Magbanua MJM, Melisko ME