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ZAVZPRET™ Nonclinical Toxicology ([zavegepant] nasal spray)


13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility


Intranasal administration of zavegepant (0, 0.3, 0.8, or 2.5 mg/day) to Tg.rasH2 mice for 26 weeks resulted in no evidence of drug-related tumors.

Intranasal administration of zavegepant (0, 2, 9, or 18.8 mg/kg/day) to rats for up to 96 weeks resulted in no evidence of drug-related tumors. Plasma exposure (AUC) at the highest dose tested was approximately 140 times that in humans at the maximum recommended human dose (MRHD) of 10 mg/day.


Zavegepant was negative in in vitro (bacterial reverse mutation, chromosomal aberration in Chinese hamster ovary cells) and in vivo (rat micronucleus) assays.

Impairment of Fertility

Subcutaneous administration of zavegepant (0, 5, 15, or 25 mg/kg/day) to male and female rats prior to and during mating and continuing in females to gestation day 7 resulted in no adverse effects on fertility or reproductive performance. Plasma exposures (AUC) at the highest dose tested were approximately 2800 times that in humans at MRHD.

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