Monkey 45 mg/kg twice-weekly SC: steady-state Cmax ~116-fold human Cmax at 90 mg SC
“The mean steady-state Cmax value following a 45 mg/kg twice-weekly SC dose in monkeys was approximately 116-fold higher than the median Cmax value following 4 weekly 90 mg SC doses in subjects with psoriasis.”
Well tolerated at 45 mg/kg twice weekly SC for 6 months in monkeys; no target organs, no delayed toxicity
“ustekinumab was generally well tolerated under a regimen of twice weekly subcutaneous dosing at 45 mg/kg for 6 months in cynomolgus monkeys and adequate margins of exposure over the human clinical exposure were demonstrated. No target organs were identified and there was no delayed toxicity after dosing had stopped.”