Negative in Ames, in vitro human lymphocyte chromosomal aberration and rat micronucleus assays
“Berotralstat produced negative results in the bacterial reverse gene mutation assay, an in vitro chromosomal aberration assay in human peripheral blood lymphocytes, and an in vivo micronucleus assay in rats.”
✓ VerifiedFDA multi-discipline review, p. 28Source ↗
Carcinogenicity
2-year rat and 26-week Tg.rasH2 mouse: no evidence of tumorigenicity
“No evidence of tumorigenicity was found in mice or rats. The carcinogenicity potential of berotralstat was evaluated in a 2-year traditional bioassay in rats and a 26-week study in B6F1 Tg.RasH2 mice.”
✓ VerifiedFDA multi-discipline review, p. 28Source ↗
Reproductive & developmental
Rat fertility, rat and rabbit EFD, rat PPND: not teratogenic; no effect on fertility or PPND
“Berotralstat was nonteratogenic in pregnant rats and rabbits dosed with the drug during the organogenesis period. Berotralstat did not affect the fertility or PPND of rats.”
✓ VerifiedFDA multi-discipline review, p. 28Source ↗
Safety pharmacology
No CV effects in conscious monkeys at 15 mg/kg; decreased blood pressure and increased RR, PR, QRS and QTc at 50-150 mg/kg
“A single dose of 15 mg/kg BCX7353 had no adverse effects on the cardiovascular system in conscious monkeys (Study 806-135). However, doses of 50 and 150 mg/kg decreased blood pressure (diastolic, systolic and mean) and increased ECG intervals, including RR, PR, QRS and QTc.”
Not genotoxic overall: Ames negative; in vitro chromosome aberration positive without (not with) metabolic activation; rat micronucleus and comet negative