Tislelizumab binds human and cynomolgus PD-1 but not murine PD-1
“From the results shown, tislelizumab seems to specifically bind to PD-1 (and to cynomolgus PD-1, but not to murine PD-1) with KD in the order of 0.1-0.2 nM.”
EMA: in vivo comparison with nivolumab/pembrolizumab of Fc-effector-null design would have strengthened proof of concept
“Therefore, a comparative study with Nivolumab and Pembrolizumab in an animal model to determine the lack of antibody effector function in vivo would have been supportive of the non-clinical proof of concept of tislelizumab.”