- Symptomatic metastatic brain or meningeal tumors unless the patient is > 6 months from definitive therapy, has no evidence of tumor growth on an imaging study within 2 weeks prior to study entry and is clinically stable with respect to the tumor at the time of study entry. Patients with brain metastases must not be undergoing acute steroid therapy or steroid taper (chronic steroid therapy is acceptable provided that the dose is stable for one month prior to and following screening radiographic studies)