No effects on lymphocyte subsets or KLH TDAR; neutralizing ADA in one high-dose monkey after recovery
“There were no treatment-related changes in the anti-KLH IgG or IgM responses either during the dosing or recovery phases. At the end of the recovery period, one high dose female was positive for anti-drug neutralizing antibody.”
✓ VerifiedFDA pharmacology/toxicology review, p. 26Source ↗
Biodistribution & persistence
No specific TCR staining in any human or cynomolgus monkey tissue
“No specific ixekizumab staining was observed in any human or Cynomolgus monkey tissues examined at either concentration.”
Malignancy risk from immunosuppressive properties with long-term use
“Nevertheless, as the risk for malignancies cannot be completely excluded due to the immunosuppressive properties of ixekizumab especially with long term use, this risk has been included in the Risk Management Plan as an important potential risk.”
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