- Symptomatic central nervous system (CNS) metastases or carcinomatous meningitis. Asymptomatic patients must be clinically stable with regard to their CNS/ meningeal metastatic involvement, have completed previous therapy (including radiation and/ or surgery) at least 4 weeks prior to study drug administration, are not receiving steroid therapy or taper, and are not receiving anti-convulsive medication for any CNS involvement