This is a Phase I/II open-label, single-arm study among recurrent malignant glioma patients. Patients will be treated with Vorinostat in combination with Bevacizumab (BV) (10 mg/kg) and Temozolomide (T) (50 mg/m2/day) BV is administered every 2 weeks. Temozolomide will be taken orally once every day. Vorinostat will be taken orally on days 1-7 and 15-21 of each 28-day cycle. In the phase I portion of this study, the dose of Vorinostat will be escalated in successive cohorts of patients to determine the maximum tolerated dose (MTD) based on dose-limiting toxicities (DLTs). In the phase II portion of this study, the dose of Vorinostat will be the MTD determined in the phase I portion. The primary endpoint of the phase II study is 6-month progression-free survival (PFS) for recurrent GBM (Glioblastoma) patients. This study will be conducted at The Preston Robert Tisch Brain Tumor Center at Duke.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
48
Bevacizumab will be administered intravenously at the dose 10 mg/kg every other week. Temozolomide will be administered on a continuous daily dosing schedule at 50 mg/m2/day. Vorinostat will be administered daily on days 1-7 and 15-21 of each 28 day cycle. The dose of Vorinostat will be escalated in successive cohorts of patients to determine the MTD of this regimen. Bevacizumab doses may be given by the local oncologists under the direction of the Duke investigators.
Duke University Medical Center
Durham, North Carolina, United States
Phase I: Determination of the Maximum Tolerated Dose (MTD)
The MTD is based upon dose-limiting toxicities (DLTs) experienced during Cycle 1 of treatment. The MTD is the dose level at which 0/6 or 1/6 patients experience DLT with at least two patients experiencing DLT at the next higher dose level. Using Common Terminology Criteria for Adverse Events (CTCAE) version 3.0, DLTs are defined as: Grade 4 neutropenia lasting greater than 5 days; Grade 3 thrombocytopenia; the occurrence of non-hematologic Grade 3 or greater drug-related adverse events excluding Grade ≥ 3 elevation in alkaline phosphatase, Grade ≥ 3 nausea or vomiting unless occurring despite the use of standard anti-emetics or Grade 3 diarrhea unless occurring despite standard anti-diarrheal therapy; \> 14 day delay to re-treat due to failure to resolve drug-related toxicity to re-treatment criteria or pre-treatment baseline.
Time frame: Cycle 1 (28 days)
Phase II: 6-month Progression-free Survival (PFS)
Phase II: Percentage of participants surviving six months from the start of study treatment without progression of disease. PFS was defined as the time from the date of study treatment initiation to the date of the first documented progression according to RANO criteria, or to death due to any cause. Per RANO, progression is a ≥ 25% increase in the sum of the products of perpendicular diameters of enhancing lesions, any new lesion or clinical deterioration.
Time frame: 6 months
Phase II: Radiographic Response.
The percentage of participants with a complete or partial response as determined by modified Response Assessment in Neuro-Oncology (RANO) criteria. A confirmation of response was not required. Complete Response (CR) was defined as complete disappearance on MR/CT of all enhancing tumor and mass effect, off all corticosteroids (or receiving only adrenal replacement doses) and accompanied by a stable or improving neurologic examination. Partial Response (PR) was defined as greater than or equal to 50% reduction in tumor size on MR/CT by bi-dimensional measurement, on a stable or decreasing dose of corticosteroids and accompanied by a stable or improving neurologic examination. Tumor assessments were done at baseline, the end of the first cycle (4 weeks), then the end of every second cycle (every 8 weeks) thereafter.
Time frame: 3 years
Phase II: Median Progression-free Survival (PFS)
Phase II: Time in months from the start of study treatment to the date of first progression according to RANO criteria, or to death due to any cause. Per RANO, progression is a ≥ 25% increase in the sum of the products of perpendicular diameters of enhancing lesions, any new lesion or clinical deterioration. Patients alive who had not progressed as of the last follow-up had PFS censored at the last follow-up date. Median PFS was estimated using a Kaplan-Meier curve.
Time frame: 3 years
Phase II: Median Overall Survival (OS)
Phase II: Time in months from the start of study treatment to date of death due to any cause. Patients alive as of the last follow-up had OS censored at the last follow-up date. Median OS was estimated using a Kaplan-Meier curve.
Time frame: 3 years
Phase II: Number of Patients With Grade 2 or Greater, Treatment-related Toxicities
Phase II: Number of patients with grade 2 or greater, treatment-related toxicities based on Common Terminology Criteria for Adverse Events (CTCAE) version 3.0.
Time frame: 3 years
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