Nonclinical Safety and Toxicokinetics of MnTnBuOE-2-PyP5+ (BMX-001)

BMX-001, a manganese porphyrin that has anti-inflammatory, antioxidant, and antitumor properties, is being developed as a potential therapeutic for high-grade glioma (HGG) and head and neck (H&N) cancer. An IND has been opened for BMX-001 in the treatment of HGG (NCT02655601) and another is in preparation for H&N. The safety of BMX-001 has been evaluated in a battery of nonclinical Good Laboratory Practice (GLP)-compliant studies. Systemic toxicity has been evaluated using the intended cGMP product administered subcutaneously for periods of up to 5 weeks in both the mouse and the monkey and included toxicokinetic evaluations to characterize systemic exposure and tissue distribution and clearance of BMX-001. In additional GLP studies, BMX-001 was not irritating to the skin or eye and caused no changes in cardiac rate or rhythm or blood pressure. Mixed results for genotoxicity were seen with the weight of evidence indicating that BMX-001 poses no genotoxic risk in humans. In systemic mouse and monkey studies, loading/maintenance dose no observed adverse effect levels were 12/2 mg/kg/dose and 6/2 mg/kg/dose, respectively, with maintenance doses administered every 3 days after the initial loading dose. Systemic data were used to determine a Food and Drug Administration-approved safe starting dose for the initial clinical study in patients with HGG. BMX-001 was detected in analyzed tissues, including the brain, persisting well past the short plasma clearance period. The hi...
Source: International Journal of Toxicology - Category: Toxicology Authors: Tags: Regular Articles: Nanomaterials and Nanotoxicology Source Type: research