Not genotoxic overall: Ames negative; in vitro chromosome aberration positive without (not with) metabolic activation; rat micronucleus and comet negative
“Based on the weight of evidence, SEPHIENCE is not genotoxic. SEPHIENCE was negative in the Ames assay. SEPHIENCE was positive in an in vitro chromosomal aberration assay without metabolic activation but not with metabolic activation. SEPHIENCE was negative in the in vivo (micronucleus and comet) assays in rats.”
6-month transgenic mouse study negative; 2-year bioassay not submitted
“The 2-year carcinogenicity bioassay was not included in this submission. Even though there was a negative finding in the 6-month transgenic mouse carcinogenicity study”
Rat EFD: no maternal or embryo-fetal toxicity up to 1000 mg/kg/day (~9-fold MRHD exposure)
“There were no maternal or embryo-fetal developmental toxicities noted at doses up to 1000 mg/kg/day, which was the NOAEL of the study; the AUC0-24 at this dose is approximately 9-fold the exposure at the MRHD (Table 53).”
No adverse effects; no cardiovascular effects in marmosets up to 1000 mg/kg/day
“In vivo studies in male and female marmoset monkeys showed no cardiovascular effects at doses up to 1000 mg/kg/day. Overall, no sepiapterin-related adverse effects were observed in these safety pharmacology studies.”