- History or clinical evidence of central nervous system (CNS) disease, including primary brain tumor (participants with a history of meningioma are not excluded), seizures not controlled with standard medical therapy, any brain metastasis, or history of stroke within the prior 12 months; patients who have had a history of brain metastasis that have been resected or have had radiosurgery with no progression for more than 6 months are eligible if the Principle Investigator from the coordinating center is consulted and agrees