Conditions: Adult Brain Tumors
Keywords: adult glioblastoma adult gliosarcoma recurrent adult brain tumor
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 6
Healthy volunteers: no

Brief summary:
RATIONALE: Erlotinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

PURPOSE: This phase II trial is studying how well erlotinib works in treating patients with recurrent glioblastoma multiforme or gliosarcoma.

Detailed description:
OBJECTIVES:

Primary

* Determine the objective response rate in patients with recurrent epidermal growth factor receptor (EGFR)-positive and PTEN wild-type glioblastoma multiforme or gliosarcoma treated with erlotinib hydrochloride.

Secondary

* Assess the response rate in patients who also EGFRVIII mutant and PTEN wild type glioblastoma multiforme or gliosarcoma.
* Determine the progression-free survival of patients treated with this drug.

OUTLINE: This is an open-label study. Patients are stratified according to concurrent use of enzyme-inducing antiepileptic drugs (EIAEDs) (yes vs no).

Patients receive oral erlotinib hydrochloride once daily on days 1-28. Treatment repeats every 4 weeks for up to 1 year in the absence of disease progression or unacceptable toxicity. Some patients may receive additional erlotinib hydrochloride after 1 year at their physician's discretion.

After completion of study treatment, patients are followed periodically.

PROJECTED ACCRUAL: A total of 30 patients will be accrued for this study.

Arms:
arm 1: During the treatment period, patients who are not receiving EIAED (Group A) will receive single-agent Tarceva, 150 mg/day. Patients on EIAED (Group B) will receive single-agent Tarceva, 600 mg/day. Tablets should be taken at the same time each day with 200 mL of water at least 1 hour before or 2 hours after a meal. Patients who are unable to swallow tablets may dissolve the tablets in distilled water for administration. The dose of Tarceva will be escalated after 14 days to 200 mg/day (Group A) or 650 mg/day (Group B) assuming no intolerable grade 2 rash, any grade 3 rash, or grade 2 diarrhea despite loperamide.

Interventions: intervention 1: erlotinib hydrochloride
Intervention descriptions: intervention 1: Tarceva will be self-administered in an open-label, unblinded manner to all patients enrolled in the study. During the treatment period, patients who are not receiving EIAED (Group A) will receive single-agent Tarceva, 150 mg/day. Patients on EIAED (Group B) will receive single-agent Tarceva, 600 mg/day. Tablets should be taken at the same time each day with 200 mL of water at least 1 hour before or 2 hours after a meal. Patients who are unable to swallow tablets may dissolve the tablets in distilled water for administration. The dose of Tarceva will be escalated after 14 days to 200 mg/day (Group A) or 650 mg/day (Group B) assuming no intolerable grade 2 rash, any grade 3 rash, or grade 2 diarrhea despite loperamide.

Protocol document: