No adverse effects on functional immune responses, circulating lymphocyte subsets or lymphoid T- and B-cell distribution
“Immunotoxicity evaluations revealed no adverse effects of ustekinumab on functional immune responses, circulating lymphocyte subpopulations or distribution of T- and B-lymphocytes in lymphoid tissue.”
Monkey volume of distribution 86-98 mL/kg after 4.5 mg/kg IV; mainly confined to the intravascular space
“The volume of distribution of ustekinumab in monkeys was 86 to 98 mL/kg following a single IV dose of 4.5 mg/kg, suggesting that the distribution of ustekinumab was mainly confined to the intravascular space”
~6 to 12.4% in psoriasis and psoriatic arthritis trials, generally low-titer
“Approximately 6 to 12.4% of subjects treated with STELARA in clinical trials in subjects with plaque psoriasis and psoriatic arthritis developed antibodies to ustekinumab, which were generally low-titer.”
In vitro whole-blood cytokine release far below alemtuzumab/TGN1412 controls; no effects on monkey TDAR, lymphocyte subsets or serum cytokines; ADA in some monkeys