No effect on fertility or male reproductive organs in monkeys at 13- to 50-fold the 60 mg human dose (mg/kg)
“Denosumab had no effect on female fertility or male reproductive organs in monkeys at doses that were 13- to 50-fold higher than the recommended human dose of 60 mg subcutaneously administered once every 6 months, based on body weight (mg/kg).”
No target organ toxicity at doses up to 50 mg/kg in 6/12-month monkey study
“In 6/12-Month Repeated-dose Study in Monkeys (102090) denosumab was administrated at doses of 0, 1, 10, and 50 mg/kg. Overall, no effects on organ weights or macroscopic or microscopic evidence of target organ toxicity were noted.”