Intratumoral Extracellular Metabolic Impact of DFMO and AMXT 1501 in Patients With Diffuse or High Grade Glioma

Intratumoral Extracellular Metabolic Impact of DFMO and AMXT 1501

This early phase I trial studies brain tumor (glioma) metabolism in response to eflornithine (DFMO) and polyamine transport inhibitor AMXT-1501 dicaprate (AMXT 1501) in patients with diffused or high grade glioma. Brain tumors use and produce certain molecules to survive and grow. DFMO is an irreversible inhibitor of ornithine decarboxylase, the enzyme catalyzing polyamine synthesis. AMXT 1501 is a polyamine transport inhibitor which prevents uptake of polyamines from the extracellular environment. This trial is being done to analyze how DFMO and AMXT 1501 affect brain tumor metabolism based on the molecules in the tumor's fluid.

Study Overview

• Status: Recruiting
• Conditions: Malignant Glioma; Diffuse Glioma
• Intervention / Treatment: Procedure: Biospecimen Collection; Procedure: Magnetic Resonance Imaging; Procedure: Computed Tomography; Procedure: Resection; Drug: Eflornithine; Drug: Polyamine Transport Inhibitor AMXT-1501 Dicaprate; Device: Microdialysis; Procedure: Placement

Detailed Description

PRIMARY OBJECTIVE:

I. Determine how polyamine depletion impacts extracellular guanidinoacetate abundance.

SECONDARY OBJECTIVES:

I. Determine the impact of polyamine depletion on polyamine abundance and the global extracellular metabolome within live human gliomas, in situ.

II. Assess the feasibility of longitudinal microdialysis to evaluate pharmacodynamic responses of in situ gliomas to therapeutic intervention in a post-operative setting.

III. Assess the central nervous system (CNS) pharmacokinetics of DFMO and AMXT 1501.

IV. Adverse effects of study drugs in the immediate postoperative setting during microdialysis.

OUTLINE: Patients are randomized to 1 of 3 arms.

ARM I: Patients undergo surgical resection with magnetic resonance imaging (MRI) and placement of catheters for microdialysis at baseline. Patients receive DFMO orally (PO) in combination with AMXT 1501 PO on days 1-5 post-surgery in the absence of disease progression or unacceptable toxicity. Patients also continue microdialysate collection as well as undergo computed tomography (CT) and collection of blood on study.

ARM II: Patients undergo surgical resection with MRI and placement of catheters for microdialysis at baseline. Patients receive DFMO PO and AMXT 1501 PO on days 3-5 post-surgery in the absence of disease progression or unacceptable toxicity. Patients also continue microdialysate collection, as well as undergo CT and collection of blood on study.

ARM III: Patients undergo surgical resection with MRI and placement of catheters for microdialysis at baseline. Patients receive DFMO PO alone on days 1 and 2 post-surgery, then receive eflornithine PO in combination with AMXT 1501 PO on days 3-5 post-surgery in the absence of disease progression or unacceptable toxicity. Patients also continue microdialysate collection, as well as undergo CT and collection of blood on study.

• Study Type: Interventional
• Enrollment (Estimated): 15
• Phase: Early Phase 1

Contacts and Locations

Study Locations

• United States
  • Minnesota
    • Rochester, Minnesota, United States, 55905
      • Recruiting
      • Mayo Clinic in Rochester
      • Contact: Clinical Trials Referral Office; Phone Number: 855-776-0015; Email: mayocliniccancerstudies@mayo.edu
      • Principal Investigator: Terence C. Burns, M.D., Ph.D.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Age >= 18 years
• Clinical and radiographic evidence suggesting a diagnosis of a diffuse high grade glioma (HGG), or a prior diagnosis of a diffuse glioma
• Planned subtotal resection due to tumor location, size, or other clinical indication deemed appropriate by the surgeon
• Provide written informed consent for the current study and the Neuro-Oncology biorepository for archiving of cerebrospinal fluid (CSF) and blood samples collected on this protocol. Willing to remain in the hospital at Mayo Clinic (Rochester, MN) for three days added to their standard post-operative stay to undergo longitudinal microdialysis
• Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without transfusion within 7 days preceding the lab assessment (obtained =< 14 days prior to registration)
• Platelet >= 100 x 10^9/L, without transfusion within 7 days preceding the lab assessment (obtained =< 14 days prior to registration)
• Hemoglobin >= 9 g/dL, without transfusion support within 7 days preceding the lab assessment (obtained =< 14 days prior to registration)
• Activated partial thromboplastin time/ partial thromboplastin time (aPTT/PTT) =< 1.5 x upper limit of normal (ULN) (obtained =< 14 days prior to registration)
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 2.5 x ULN (obtained =< 14 days prior to registration)
• Total serum bilirubin =< 1.5 x ULN (obtained =< 14 days prior to registration)
• The patient is clinically euthyroid
• Serum creatinine =< 1.5 x ULN or creatinine clearance >= 60 mL/min/1.73 m^2 for patients with serum creatinine levels above 1.5 x ULN (obtained =< 14 days prior to registration)
• Negative serum or urine pregnancy test is required for female subjects of childbearing age

Exclusion Criteria:

• Patients who are not appropriate surgical candidates due to current or past medical history or uncontrolled concurrent illness which limits safety of or compliance to study proceedings
• Vulnerable populations: pregnant or nursing women, prisoners, mentally handicapped
• Participants who are unable to swallow tablets or who are at risk for impaired absorption of oral medication. NOTE: This includes but not limited to, refractory vomiting, gastric resection/bypass, and duodenal/jejunal resection
• Patients with known hypersensitivity or allergy to DFMO or AMXT 1501
• Contraindication to MRI or administration of gadolinium

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Arm I (MRI, resection, DFMO, AMXT 1501); Patients undergo magnetic resonance imaging (MRI) and surgical resection at baseline. Patients receive eflornithine PO in combination with AMXT 1501 PO on days 1-5 post-surgery. Patients also undergo CT after surgery and collection of blood on study.	Procedure: Biospecimen Collection; Undergo collection of blood; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Procedure: Computed Tomography; Undergo CT; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Procedure: Resection; Undergo surgical resection; Other Names: Surgical Resection; Drug: Eflornithine; Given PO; Other Names: DFMO; Difluoromethylornithine; Alpha-Difluoromethylornithine; Difluromethylornithine; Drug: Polyamine Transport Inhibitor AMXT-1501 Dicaprate; Given PO; Other Names: AMX 513 Dicaprate; AMX513 Dicaprate; AMXT 1501 Dicaprate; AMXT-1501 Dicaprate; Device: Microdialysis; Undergo Microdialysis; Procedure: Placement; Undergo placement of catheters; Other Names: Place
Placebo Comparator: Arm II (MRI, resection, placebo, DMFO, AMXT 1501); Patients undergo magnetic MRI and surgical resection at baseline. Patients receive placebo PO on days 1 and 2 post-surgery, and then receive eflornithine PO and AMXT 1501 PO on days 3-5 post-surgery. Patients also undergo CT after surgery and collection of blood on study.	Procedure: Biospecimen Collection; Undergo collection of blood; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Procedure: Computed Tomography; Undergo CT; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Procedure: Resection; Undergo surgical resection; Other Names: Surgical Resection; Drug: Eflornithine; Given PO; Other Names: DFMO; Difluoromethylornithine; Alpha-Difluoromethylornithine; Difluromethylornithine; Drug: Polyamine Transport Inhibitor AMXT-1501 Dicaprate; Given PO; Other Names: AMX 513 Dicaprate; AMX513 Dicaprate; AMXT 1501 Dicaprate; AMXT-1501 Dicaprate; Device: Microdialysis; Undergo Microdialysis; Procedure: Placement; Undergo placement of catheters; Other Names: Place
Active Comparator: Arm III (MRI, resection, DMFO, AMXT 1501); Patients undergo magnetic MRI and surgical resection at baseline. Patients receive eflornithine PO alone on days 1 and 2 post-surgery, then receive eflornithine PO in combination with AMXT 1501 PO on days 3-5 post-surgery. Patients also undergo CT after surgery and collection of blood on study.	Procedure: Biospecimen Collection; Undergo collection of blood; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Procedure: Computed Tomography; Undergo CT; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Procedure: Resection; Undergo surgical resection; Other Names: Surgical Resection; Drug: Eflornithine; Given PO; Other Names: DFMO; Difluoromethylornithine; Alpha-Difluoromethylornithine; Difluromethylornithine; Drug: Polyamine Transport Inhibitor AMXT-1501 Dicaprate; Given PO; Other Names: AMX 513 Dicaprate; AMX513 Dicaprate; AMXT 1501 Dicaprate; AMXT-1501 Dicaprate; Device: Microdialysis; Undergo Microdialysis; Procedure: Placement; Undergo placement of catheters; Other Names: Place

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in the tumor/brain extracellular guanidinoacetate ratio	Targeted metabolomics will be performed using the microdialysate aliquot collected at each time point to quantify guanidinoacetate content. Fold change values will be calculated between each time point within a patient. Fold changes values between time points will be compared across the three arms for statistically significant differences using a Wilcoxon signed rank test; p < 0.05 will be considered statistically significant.	Baseline up to 2 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Measured extracellular levels of glutamate in tumor and brain microdialysates	Targeted metabolomics will be performed for each time point's microdialysate, assaying for polyamines (putrescine, spermine, and spermidine), in addition to ornithine and glutamate. Fold change values will be calculated between each time point within a patient. Fold changes values between time points will be compared across the three arms for statistically significant differences using a Wilcoxon signed rank test; p < 0.05 will be considered statistically significant.	Up to 2 months
Proportion of longitudinal microdialysis aliquots containing > 30 uL of microdialysate	Targeted metabolomics will be performed for each time point's microdialysate, assaying for polyamines (putrescine, spermine, and spermidine), in addition to ornithine and glutamate. Fold change values will be calculated between each time point within a patient. Fold changes values between time points will be compared across the three arms for statistically significant differences using a Wilcoxon signed rank test; p < 0.05 will be considered statistically significant.	Up to post-operative day 5
Central nervous system free drug levels from microdialysate - DFMO	Drug levels of difluoromethylornithine (eflornithine [DFMO]) at each time point will be calculated for pharmacokinetic analyses by Aminex Therapeutics to determine time of peak concentration (hr), maximum drug concentration (ng/mL), and area under the curve 0-t (hr*ng/mL).	Up to 2 months
Central nervous system free drug levels from microdialysate - AMXT 1501	Polyamine transport inhibitor AMXT-1501 dicaprate (AMXT 1501) at each time point will be calculated for pharmacokinetic analyses by Aminex Therapeutics to determine time of peak concentration (hr), maximum drug concentration (ng/mL), and area under the curve 0-t (hr*ng/mL).	Up to 2 months
AMXT 1501 brain/plasma ratio over time	Will be assessed via longitudinal microdialysis to understand how AMXT 1501 is distributed in Central Nervous System (CNS) tissue with and without tumor as compared to plasma levels over time.	Up to 2 months
Incidence of adverse events	Although no significant additional risks are anticipated in the proposed context, safety data will be assessed to evaluate for any unanticipated adverse events.	Up to 2 months

Collaborators and Investigators

• Sponsor: Mayo Clinic
• Collaborators: National Cancer Institute (NCI)
• Investigators: Principal Investigator: Terence C. Burns, M.D., Ph.D., Mayo Clinic in Rochester

Publications and helpful links

Helpful Links

• Mayo Clinic Clinical Trials

Study record dates

Study Major Dates

• Study Start (Actual): October 1, 2023
• Primary Completion (Estimated): January 15, 2027
• Study Completion (Estimated): September 15, 2027

Study Registration Dates

• First Submitted: January 23, 2023
• First Submitted That Met QC Criteria: February 6, 2023
• First Posted (Actual): February 8, 2023

Study Record Updates

• Last Update Posted (Actual): February 1, 2024
• Last Update Submitted That Met QC Criteria: January 30, 2024
• Last Verified: January 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Histologic Type; Neoplasms; Neoplasms, Glandular and Epithelial; Neoplasms, Neuroepithelial; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Glioma; Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Enzyme Inhibitors; Antineoplastic Agents; Antiprotozoal Agents; Antiparasitic Agents; Trypanocidal Agents; Ornithine Decarboxylase Inhibitors; Eflornithine
• Other Study ID Numbers: 22-005690 (Mayo Clinic in Rochester); P30CA015083 (U.S. NIH Grant/Contract); NCI-2022-10375 (Registry Identifier: CTRP (Clinical Trial Reporting Program)); R37CA276851 (U.S. NIH Grant/Contract)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: No