Human tumour xenografts in nude mice, mainly with murine parent A4.6.1; bevacizumab also inhibited breast, prostate and ovarian xenografts
“Mono-therapy with A4.6.1, bevacizumab, paclitaxel [76, 79], or doxorubicin [88] inhibited tumour growth and angiogenesis in tumours from human breast cancer [88], prostate cancer [79] and ovarian cancer [76].”
Bevacizumab does not bind endogenous mouse or rat VEGF; binds monkey VEGF and rabbit VEGF (lower affinity)
“The pharmacokinetics of bevacizumab was investigated in species where the antibody is expected to bind to and neutralise endogenous VEGF, i.e., cynomolgus monkeys [41] and rabbits (albeit with lower affinity than for human VEGF, see toxicology), and in mice and rats, where it is reported not to bind endogenous VEGF [42].”
EMA: pharmacology mostly with A4.6.1, but equivalence to bevacizumab adequately documented (VEGF affinity, anti-proliferative effect)
“Most submitted pharmacological studies are performed with A4.6.1 but equivalence between bevacizumab and A4.6.1 has been adequately documented with regard to VEGF affinity and anti-proliferative effect.”