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”
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.”
Not genotoxic overall: Ames negative; in vitro chromosome aberration positive without (not with) metabolic activation; rat micronucleus and comet negative