Anti-MPO ANCA glomerulonephritis model in hC5aR knock-in mice
“In the ANCA disease model in hC5aR KI mice, avacopan caused dose-dependent and significant reductions in the incidence of glomerular crescent formation and necrosis relative to vehicle-treated mice”
Avacopan has little or no potency at mouse/rat C5aR, so a human C5aR knock-in mouse was generated
“As avacopan retains little, if any, potency for C5aR expressed by mice or rats, the applicant generated a human C5aR knock-in (hC5aR KI) mouse strain in which the mouse C5aR gene was replaced with the human C5aR gene.”
EMA: in vitro and in vivo pharmacology support clinical use; models and dose ranges relevant
“Overall, in vitro and in vivo primary pharmacology data support the intended clinical use. Moreover, the in vivo models and the avacopan dose ranges studied are considered relevant for the clinical situation.”