Daily ascending dosing in cynomolgus monkeys to mitigate cytokine release syndrome induced by ERY22, surrogate for T-cell redirecting bispecific antibody ERY974 for cancer immunotherapy

Autor: Yoshika Iwata, Junko Taketo, Masayuki Mishima, Akihisa Kaneko, Toshiko Hara, Asako Harada, Takahiro Ishiguro, Masanori Sasaki, Atsushi Narita, Sho Akai
Rok vydání: 2019
Předmět:
Zdroj: Toxicology and Applied Pharmacology. 379:114657
ISSN: 0041-008X
DOI: 10.1016/j.taap.2019.114657
Popis: CD3 bispecific constructs show promising therapeutic potential as anti-tumor antibodies, but it has concurrently been difficult to manage cytokine release syndrome (CRS) in clinical use. Currently, the most effective measure for reducing CRS is considered a combination of intra-patient/animal dose escalation and corticosteroid premedication. To examine how effectively an intra-animal ascending dose regimen without premedication would mitigate CRS, we compared plasma cytokine levels in two groups of cynomolgus monkeys; one group was given a single dose, and the other a three-fold daily ascending dose of a CD3 bispecific construct that targets and cross-reacts with both glypican 3 and CD3 (ERY22). Ascending doses up to 1000 μg/kg of ERY22 dramatically reduced the peak cytokine levels of IL-6, TNF-α, and IFN-γ, IL-2 as well the clinical severity of CRS compared with a single dose of 1000 μg/kg. Peak cytokine levels following the single and ascending doses were 60,095 pg/mL and 1221 pg/mL for IL-6; 353 pg/mL and 14 pg/mL for TNF-α; 123 pg/mL and 16 pg/mL for IFN-γ; and 2219 pg/mL and 42 pg/mL for IL-2. The tolerance acquired with daily ascending doses up to 1000 μg/kg remained in effect for the following weekly doses of 1000 μg/kg.
Databáze: OpenAIRE