Anti-drug antibodies observed but did not affect exposure except in one 26-week monkey
“Anti-drug antibodies were observed but did not affect drug exposure, with the exception of one animal in the 26-week Cynomolgus monkey study, which consequently was excluded from the study interpretation.”
Mouse radiolabel study: free drug eliminated via kidneys, vWF-complexed drug targets and is likely catabolized in liver
“data from the biodistribution study in mice using 125I-radiolabeled caplacizumab suggest that free caplacizumab is eliminated via the kidneys, while vWF-complexed caplacizumab appears to target and possibly be catabolized in the liver.”
ADA observed but did not affect exposure, except one 26-week monkey excluded from interpretation
“Anti-drug antibodies were observed but did not affect drug exposure, with the exception of one animal in the 26-week Cynomolgus monkey study, which consequently was excluded from the study interpretation.”
Treatment-emergent ADA in 3% of HERCULES patients, with neutralizing potential
“Treatment-emergent anti-drug antibodies (TE ADA) against caplacizumab-yhdp were detected in 3% of patients treated with CABLIVI in the HERCULES study. In the HERCULES study, TE ADA were further characterized as having neutralizing potential.”
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