About this trial
The purpose of this study is to determine the ability of letrozole to penetrate the blood brain barrier and concentrate in gliomas.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Radiographically, histologically or cytologically confirmed recurrent brain high grade glioma with plan for resection or biopsy.
Age >18 years.
ECOG performance status 0 -2 (Karnofsky >60%, see Appendix A).
Absolute neutrophil count (ANC) ≥ 1,000 cells/mm3;
Disqualifiers
Patients may not be receiving any other investigational agents.
History of allergic reactions attributed to letrozole or other agents used in study.
Uncontrolled intercurrent illness including, but not limited to, ongoing significant or serious active cardiovascular disease (CHF exacerbation, unstable angina or MI in last 6 months), or infection including the diagnosis of AIDS or active hepatitis B or C infection, or psychiatric illness or medical or personal conditions that in the opinion of the investigator would limit the patient's ability to participate.
Patients attempting to conceive, and pregnant or nursing women are excluded from this study.
Trial design
Single group
Treatments tested in this trial
Letrozole Oral Tablet
DrugAdministration: Letrozole will be given orally once daily.
Temozolomide
Drug50 mg/m2 TMZ administered orally once daily
Treatment groups
Trial outcomes
Primary outcomes
Overall Letrozole AUC in tumor tissue.
Pharmacokinetic modeling will be used to determine the overall AUC in the tumor tissue to assess for letrozole penetration through blood brain barrier.
Progression free survival in letrozole and temozolomide combination
Sub-study expansion cohort only: Progression free survival using RANO criteria at 6 months from the start of the combination of 15 mg letrozole and 50 mg/m2 temozolomide.
Secondary outcomes
Adverse Events
The number of patients with treatment related toxicity will be assessed using CTCAE v4.0
Progression free Survival
Patients will be followed for response using RANO criteria to determine time from start of treatment to progression.
Overall Survival
Patients will be followed from start of treatment until time of death
Sponsors and contacts
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