Lapatinib in Treating Patients With Recurrent Glioblastoma Multiforme

"For patients receiving enzyme inducing anti-epileptic drugs (EIAEDs):~* Phase I: starting dose for first cohort: 1000 mg GW572016 po b.i.d.; actual dose assigned at registration; intra patient dose escalation permitted ONCE in phase I patients ONLY if specified criteria met (see section 8.6).~* Phase II: Recommended phase II dose from phase I portion of the study, given po b.i.d.~For patients NOT receiving enzyme inducing anti-epileptic drugs (NON-EIAEDs):~• Phase II: 750 mg GW572016 po b.i.d.~For all patients:~• Dose reductions as required based on adverse events."