Neutralizing ADA in nearly all rats in the 4-week SC study
“DX-2930 was highly immunogenic in rats as evidenced by the development of neutralizing anti-drug antibodies (ADA) in nearly all treated animals in a 4-week SC toxicity study.”
✓ VerifiedFDA multi-discipline review, p. 26Source ↗
Biodistribution & persistence
Crossed the placenta and detected in milk of lactating monkeys
“In the ePPND study, DX-2930 crossed the blood-placenta barrier and was also detected in the milk of lactating monkeys.”
✓ VerifiedFDA multi-discipline review, p. 25Source ↗
Modality-specific risk
aPTT prolongation from kallikrein inhibition of the intrinsic coagulation pathway, without abnormal bleeding
“It can be considered an indirect pharmacological effect of lanadelumab because reduced kallikrein activity limits intrinsic coagulation pathway.”
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