Negative in Ames, in vitro chromosomal aberration and in vivo rat bone marrow micronucleus assays
“Atogepant was negative in Organisation for Economic Cooperation and Development-compliant Ames, in vitro chromosomal aberration, and in vivo rat bone marrow micronucleus assays.”
2-year mouse and rat: not carcinogenic; female mouse high dose not adequately justified
“Based on the FDA statistical analysis of the 2-year mouse and rat carcinogenicity studies, atogepant was not carcinogenic. The study in female mice was not adequate because the HD was not adequately justified”
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Instead of genotoxicity
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
DRG histopathology
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reproductive & developmental
Rat and rabbit EFD: embryolethality, lower fetal weight (rats) and fetal variations above clinical exposures
“In animal studies, oral administration of atogepant during organogenesis resulted in embryolethality, adverse effects on embryofetal development (decreased fetal body weight in rats, increased incidences of fetal variations in rats and rabbits) at maternal exposures greater those used clinically.”
“Atogepant was negative in in vitro (Ames, chromosomal aberration test in Chinese Hamster Ovary cells) and in vivo (rat bone marrow micronucleus) assays.”
Chromosomal aberration test in CHO cells: negative
“Atogepant was negative in in vitro (Ames, chromosomal aberration test in Chinese Hamster Ovary cells) and in vivo (rat bone marrow micronucleus) assays.”
“Atogepant was negative in in vitro (Ames, chromosomal aberration test in Chinese Hamster Ovary cells) and in vivo (rat bone marrow micronucleus) assays.”
2-year mouse and 2-year rat: not carcinogenic; female mouse high dose not adequately justified
“Based on the FDA statistical analysis of the 2-year mouse and rat carcinogenicity studies, atogepant was not carcinogenic. The study in female mice was not adequate because the HD was not adequately justified;”
Weak hERG inhibition (23.9% at 28 µM); unlikely to affect repolarisation at clinical doses
“atogepant exhibited weak hERG current inhibition (23.9% inhibition at 28 µM), which suggests that atogepant is unlikely to alter ventricular repolarisation in humans at clinically effective doses.”
Not genotoxic overall: Ames negative; in vitro chromosome aberration positive without (not with) metabolic activation; rat micronucleus and comet negative