Not conducted; antibodies not expected to interact with DNA
“No formal genotoxicity studies for axatilimab have been conducted. Since monoclonal antibodies are not expected to interact directly with DNA”
✓ VerifiedFDA multi-discipline review, p. 51Source ↗
Carcinogenicity
Not conducted; rodent studies not relevant as axatilimab is not pharmacologically active in rodents
“Because axatilimab is not active pharmacologically in rodents, conventional carcinogenicity studies in mice or rats are not relevant for axatilimab.”
✓ VerifiedFDA multi-discipline review, p. 52Source ↗
Reproductive & developmental
No dedicated studies; weight-of-evidence (CSF-1/CSF-1R deficiency phenotypes) indicates potential reproductive and embryo-fetal risk
“The mechanism of action of axatilimab, the embryo-lethal and phenotypic effects of CSF-1 and CSF-1R deficiency and the role of CSF-1 and CSF-1R in the reproductive system collectively indicate the potential risk for axatilimab on reproductive and embryo-fetal development.”
✓ VerifiedFDA multi-discipline review, p. 35Source ↗
Safety pharmacology
Incorporated into repeat-dose monkey studies; labored respiration at 30 and 100 mg/kg; no cardiovascular or CNS changes
“In the 26-week toxicology study, labored respiration (audible breathing) was noted in animals in the 30 mg/kg and 100 mg/kg dosing groups. There were no test article-related changes observed in the cardiovascular and central nervous (CNS) systems.”
✓ VerifiedFDA multi-discipline review, p. 34Source ↗