Lapatinib in Treating Young Patients With Recurrent or Refractory Central Nervous System Tumors

Inclusion Criteria

• PHASE I TRIAL:
• All patients with recurrent or refractory malignant CNS tumors; a histological diagnosis of malignant CNS tumor from either the initial presentation or at the time of recurrence is required for all patients, but those with brain stem gliomas

MOLECULAR BIOLOGY TRIAL:

• Patients must have recurrent or refractory disease with a histological diagnosis from either the initial presentation or at the time of recurrence of one of the following:
• Recurrent or refractory medulloblastoma/PNET
• Recurrent or refractory high grade glioma, (anaplastic astrocytoma, glioblastoma multiforme, gliosarcoma, anaplastic oligodendroglioma)
• Recurrent or refractory ependymoma
• Patients for whom surgical resection is clinically indicated and are amenable to receiving GW572016 for 7-14 days prior to their resection

PHASE II TRIAL:

• Patients must have recurrent or refractory disease with a histological diagnosis from either the initial presentation or at the time of recurrence of one of the following:
• Recurrent or refractory medulloblastoma/PNET,
• Recurrent or refractory high grade glioma, (anaplastic astrocytoma, glioblastoma multiforme, gliosarcoma, anaplastic oligodendroglioma)
• Recurrent or refractory ependymoma
• Patients must have measurable disease
• Patients with neurological deficits should have deficits that are stable for a minimum of 1 week prior to registration
• Karnofsky performance scale (KPS for > 16 yrs of age) or Lansky performance score (LPS for = = 50 assessed within two weeks prior to registration
• Evidence of recovery from prior chemotherapy; no myelosuppressive anticancer chemotherapy within 3 weeks and no biological therapy or other non-myelosuppressive investigational agent = = 3 months prior to registration for craniospinal irradiation (>= 18 Gy); >= 4 weeks for local radiation to primary tumor; and >= 2 weeks prior to registration for focal irradiation to symptomatic metastatic sites
• >= 6 months prior to registration for allogeneic bone marrow transplants and >= 3 months prior to registration for autologous bone marrow/stem cell transplants
• Patients with seizure disorder may be enrolled if well controlled; patients receiving enzyme inducing anticonvulsants are not eligible for this study; patients must be off EIACD for at least 2 weeks prior to registration
• Patients who are receiving corticosteroids must be on a stable or decreasing dose for at least 1 week prior to registration; patients enrolled in the molecular biology and phase II components of the study will not be stratified based on steroid use; however, use of steroids should be reported as a concomitant medication in the database; in the phase I component of the study, patients on corticosteroids will be eligible for stratum 2 of the study; patients with ACTH deficiency who are on physiological replacement doses of hydrocortisone (or other corticosteroid) will be eligible for stratum 1 of the study
• Off all colony forming growth factor(s) >= 2 weeks prior to registration (G-CSF, GM-CSF, Erythropoietin)
• Patients must not have received:
• CYP3A4 inhibitors within seven (7) days prior to registration on protocol and for the duration of the study; however, amiodarone, another CYP3A4 inhibitor, should have been discontinued 6 months prior to registration and for the duration of the study
• CYP3A4 inducers within fourteen (14) days prior to registration and for the duration of the study
• Cimetidine within 48 hours prior to registration and for the duration of the study
• Patients must be in adequate general condition for study
• Absolute neutrophil count >= 1000/microliter
• Platelets >= 100,000/microliter (transfusion independent)
• Hemoglobin >= 8.0 g/dL (transfusion independent)
• Serum creatinine = = 70 ml/min/1.73m^2
• Bilirubin = = 2 g/dL
• No overt renal, hepatic, biliary, cardiac or pulmonary disease
• Adequate cardiac function, assessed within 2 weeks prior to registration, defined as: shortening