This phase Ib trial tests the safety and side effects of ERAS-801 in treating patients with isocitrate dehydrogenase (IDH) wildtype, epidermal growth factor receptor (EGFR) amplified or mutated grade IV glioblastoma or gliosarcoma that can be removed by surgery (resectable) and that is growing, spreading, or getting worse (progressive), that has come back after a period of improvement (recurrent) or that is newly diagnosed in an elderly patient. Glioblastoma is the most common brain cancer in adults and survival rates remain poor despite treatment including surgery, radiation and chemotherapy. EGFR is a protein found on the surface of some cells, to which epidermal growth factor binds, causing the cells to divide. It is found at abnormally high levels on the surface of many types of tumor cells, so these cells may divide excessively in the presence of epidermal growth factor. ERAS-801, an EGFR inhibitor that can penetrate the central nervous system, binds to the tumor cells that express EGFR and may help shrink or slow the growth of the tumor cells.
PRIMARY OBJECTIVE: I. To evaluate the glucose utilization in the tumor from the glioblastoma patients treated with EGFR inhibitor ERAS-801 (ERAS-801). (Cohort A) II. To evaluate the changes in maximum concentration (Cmax) at dose optimized ERAS-801 correlating with corrected QT interval (QTc) prolongation. (Cohort B) III. To evaluate the tolerability and efficacy of ERAS-801 recommended phase 2 dose (RP2D) in patients ≥ 70 years of age with newly diagnosed glioblastoma. (Cohort C) IV. To evaluate the 6 month progression free survival (PFS6) and response rate (RR) of ERAS-801 in patients ≥ 70 years of age with newly diagnosed glioblastoma. (Cohort C) SECONDARY OBJECTIVES: I. To evaluate the pharmacokinetic (PK) profile in plasma, cerebrospinal fluid (CSF), and tumor tissue of ERAS-801 in recurrent glioblastomas. (Cohort A) II. To evaluate the pharmacodynamic (PD) impact of ERAS-801 treatment in recurrent glioblastomas. (Cohort A) III. To evaluate whether glycolytic index (GI) measured by fludeoxyglucose F-18 (FDG)-positron emission tomography (PET) and metabolic magnetic resonance imaging (MRI) correlates with clinical responses in recurrent glioblastomas treated with ERAS-801. (Cohort A) IV. To evaluate whether potential of hydrogen (pH)-weighted chemical exchange saturation transfer (CEST)-spin-and-gradient echo (SAGE)-echoplanar imaging (EPI) contrast measured by metabolic MRI correlates with clinical responses in recurrent glioblastomas treated with ERAS-801. (Cohort A) V. To evaluate the influence of ERAS-801 treatment on the apoptotic machinery in recurrent glioblastoma. (Cohort A) VI. To evaluate the safety and tolerability of ERAS-801 recommended phase 2 dose (RP2D) in recurrent glioblastoma. (Cohort A) VII. To evaluate the steady state of dose optimized ERAS 801. (Cohort B) VIII. To evaluate the pharmacokinetic (PK) profile in plasma of dose optimized ERAS-801 in recurrent glioblastomas. (Cohort B) IX. To evaluate the safety and tolerability of ERAS-801 optimized dosing in recurrent glioblastoma. (Cohort B) X. To evaluate the glucose utilization in the tumor from the glioblastoma patients treated with ERAS-801 at optimized dosing. (Cohort B) XI. To evaluate the pharmacokinetic (PK) profile in plasma of ERAS-801 in patients ≥ 70 years of age with newly diagnosed glioblastomas. (Cohort C) XII. To evaluate the glucose utilization in the tumor from the glioblastoma patients ≥ 70 years of age treated with ERAS-801. (Cohort C) EXPLORATORY OBJECTIVES: I. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include: Ia. Estimating the efficacy of ERAS-801 through 6 month PFS6, progression free survival (PFS), and overall survival (OS) as defined by modified Response Assessment in Neuro-Oncology criteria (mRANO)/Response Assessment in Neuro-Oncology criteria (RANO) 2.0; Ib. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; Ic. Exploring whether there are alterations of key glycolytic enzymes and/or other transcriptional changes linked to EGFR occur with ERAS-801 treatment; Id. Exploring whether there are changes in percent of tumor cells that have immunohistochemical positive staining for the KI67 antigen after ERAS-801 treatment; Ie. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort A) II. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include: IIa. Estimating the efficacy of ERAS-801 at optimized dosing through PFS6, PFS, and OS as defined by mRANO/RANO 2.0; IIb. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; IIc. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort B) III. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include: IIIa. Estimating the efficacy of ERAS-801 through PFS, and OS as defined by mRANO/RANO 2.0; IIIb. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; IIIc. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort C) OUTLINE: Patients are assigned to 1 of 3 cohorts. COHORT A: Patients receive ERAS-801 orally (PO) once daily (QD) for 8-14 days prior to undergoing scheduled surgical resection. Starting no more than 28 days after surgery, patients then receive ERAS-801 PO QD on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo echocardiography (ECHO), urine and blood sample collection and brain MRI throughout the study. Additionally, patients undergo CSF sample collection at the time of surgery and FDG PET on study. COHORT B: After first or second recurrence, patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study. COHORT C: Within 2-4 weeks of the last tumor surgery, newly diagnosed patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study. After completion of study treatment, patients are followed up at 30 days, then every 2 months up to documented disease progression, death, or the end of the study. Patients with disease progression are followed up every 3 months up to death, withdrawal of consent, or the end of the trial, whichever, occurs first.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
50
Undergo urine, blood, and CSF sample collection
Undergo ECHO
Given PO
Given FDG
Undergo brain MRI
Undergo FDG PET
Undergo surgical resection
UCLA / Jonsson Comprehensive Cancer Center
Los Angeles, California, United States
RECRUITINGMemorial Sloan Kettering Cancer Center
New York, New York, United States
NOT_YET_RECRUITINGFludeoxyglucose F-18 (FDG) tumor uptake (Cohort A)
FDG positron emission tomography (PET), as measured by median normalized FDG standardized uptake value (SUV) within the contrast enhancing tumor, will be compared to estimate the change in FDG uptake in the tumor. Analyses will be descriptive, summarizing changes with confidence intervals and exploring correlations; no formal hypothesis testing is planned.
Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery
Pharmacokinetics (PK) dose modification (Cohort B)
Will evaluate the effect of 120 mg twice daily dosing on corrected QT interval (QTc) relative to maximum concentration compared with historical 240 mg once-daily data. PK data and triplicate electrocardiograms will be summarized descriptively, with QTc analyzed as a continuous change.
Time frame: At day 1 and day 15
6 month progression free survival (Cohort C)
Will be summarized as a proportion with corresponding 95% exact confidence intervals. Nominal exact two-sided p-values will be presented, testing EGFR inhibitor ERAS-801 against a fixed 5% null rate. Simon's minimax two-stage design will be used for conducting the trial.
Time frame: At 6 months
Incidence of adverse events
Adverse events will be described by the National Cancer Institute Common Terminology Criteria for Adverse Events version 5. Will be presented using a 95% confidence interval and 2-sided p-value, combined with Bayesian posterior means and High Posterior Density intervals. Descriptive summaries and data visualization will be used
Time frame: From enrollment to 30 days after the last dose of study treatment
Change in glycolytic index (GI)
The GI measurement will be measured by the product of FDG PET SUV and potential of hydrogen (pH)-weighted chemical exchange saturation transfer (CEST)-spin-and-gradient echo (SAGE)- echoplanar imaging (EPI) and will be compared to estimate the change in GI in the tumor area as a surrogate for changes in glycolytic flux.
Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery
pH-weighted CEST-SAGE-EPI
Amine proton CEST-SAGE-EPI will be evaluated for change in acidity in the tumor. Continued monitoring for tumor acidity will occur throughout the study treatment cycles.
Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery
PK profile
PK concentration data will be summarized using appropriate summary statistics and further details will be provided.
Time frame: At time of surgery and then at the beginning of each treatment cycle (1 cycle = 28 days)
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