Symptomatic brain metastasis or leptomeningeal disease Known or suspected brain metastasis or active leptomeningeal disease Or any history of leptomeningeal metastasis. Presence of brain metastasis or leptomeningeal spread of the disease Brain metastasis and/or leptomeningeal disease (known or suspected) Patients with leptomeningeal metastasis. Patients with a history of brain/leptomeningeal metastasis Leptomeningeal disease or uncontrolled brain metastasis Known or suspected brain metastasis or active leptomeningeal disease Known or suspected brain metastasis or active leptomeningeal disease. Known brain metastasis or leptomeningeal involvement Patients with known or suspected brain metastasis or active leptomeningeal disease Patients with leptomeningeal metastasis Leptomeningeal metastasis Active brain or leptomeningeal metastasis. History or presence of brain metastasis or leptomeningeal disease Known or suspected brain metastasis or active leptomeningeal disease Known or suspected brain metastasis or active leptomeningeal disease Leptomeningeal metastasis For Cohort C:Has known or suspected brain metastasis or leptomeningeal carcinomatosis Known or suspected brain metastasis or active leptomeningeal disease; Known brain metastasis or leptomeningeal disease Subject has known or suspected brain metastasis or active leptomeningeal disease. Known or suspected brain metastasis or active leptomeningeal disease; Known brain metastasis or leptomeningeal disease Unstable or untreated brain/leptomeningeal metastasis Subject has known or suspected brain metastasis or active leptomeningeal disease. Current or previously treated brain metastasis or active leptomeningeal disease; Known or suspected brain metastasis or active leptomeningeal disease History of brain metastasis, active leptomeningeal disease or seizure Patients with a history of brain/leptomeningeal metastasis Active brain metastasis or leptomeningeal metastasis Widespread definitive leptomeningeal metastasis Known or suspected brain metastasis or active leptomeningeal disease Known or suspected brain metastasis or active leptomeningeal disease Known or suspected brain metastasis or leptomeningeal disease. Any history of leptomeningeal metastasis. Known brain metastasis or leptomeningeal disease Any presence of leptomeningeal disease or any parenchymal brain metastasis Leptomeningeal metastasis. Brain metastasis, leptomeningeal disease. Known or suspected brain metastasis or active leptomeningeal disease Known or suspected brain metastasis or leptomeningeal disease Active known or suspected brain metastasis or active leptomeningeal disease needing treatment Active known or suspected brain metastasis or active leptomeningeal disease undergoing or requiring treatment.