Monkey EFD: no teratogenicity; increased abortion/embryo-fetal death at 10 and 50 mg/kg (1.25x MRHD and higher)
“Although there was no evidence for a teratogenic/dysmorphogenic effect at any dose, tocilizumab produced an increase in the incidence of abortion/embryo-fetal death at doses 1.25 times and higher the MRHD by the intravenous route at maternal intravenous doses of 10 and 50 mg/ kg.”
Dedicated cardiovascular studies in cynomolgus monkeys; no effect on cardiac electrophysiology, cardiac tissue or pro-thrombotic activity up to 50 mg/kg IV
“Tocilizumab showed no effect on the cardiac electrophysiological performance, cardiac tissue integrity or systemic pro-thrombotic activities IV at doses up to 50 mg/kg.”