Crossed the rabbit placenta; fetal serum concentrations mostly exceeded maternal (median ratio 1.87)
“In most cases, foetal serum concentrations were greater than maternal serum concentrations with a median ratio of foetal serum:maternal serum concentrations of 1.87.”
VEGF inhibition: dose-dependent physeal dysplasia from blocked vessel formation in growth plates
“The toxicity included a dose-dependent occurrence of physeal dysplasia secondary to the inhibition of blood vessel formation in long bone growth plates.”
Monkey 26-week: very weak anti-Fab antibodies in one 50 mg/kg animal (and one control, assay interference)
“Serum from one control animal at study day 15 and serum from one 50 mg/kg animal at day 183 were positive for antibodies to bevacizumab. The responses were very weak (just above the minimal detectable level) and were directed to the Fab portion of bevacizumab.”
0.6% (14/2233) treatment-emergent ADA in adjuvant solid tumour studies; 3 of 14 neutralizing
“In clinical studies for adjuvant treatment of a solid tumor, 0.6% (14/2233) of patients tested positive for treatment-emergent anti-bevacizumab antibodies as detected by an electrochemiluminescent (ECL) based assay. Among these 14 patients, three tested positive for neutralizing antibodies against bevacizumab using an enzyme-linked immunosorbent assay (ELISA).”
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