Conjunctivitis and keratitis seen clinically with IL-13 inhibition; not reproduced in healthy monkeys
“Conjunctivitis and keratitis were reported more frequently in patients treated with lebrikizumab (8.5 % and 0.6% respectively) compared to placebo in controlled clinical studies. Ophthalmological examinations did not suggest any ocular effects in long-term repeat-dose toxicity studies in healthy cynomolgus monkeys.”
Variable treatment-emergent ADA in monkeys, reducing lebrikizumab concentrations in some animals
“Lebrikizumab produced variable incidences of treatment-emergent ADA across studies; presence of ADA was associated with reduced serum concentrations of lebrikizumab in some animals.”
ADA in 4/145 (2.8%) of EBGLYSS-treated subjects over 12 months; most neutralizing, low titer
“Antibodies to lebrikizumab-lbkz developed in 4/145 (2.8%) of subjects treated with EBGLYSS 250 mg every 2 weeks followed by 250 mg every four weeks during the 12-month treatment period in EBGLYSS studies. Most of these antibodies were neutralizing and of low titers.”
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