Bevacizumab and aflibercept both fall into the vascular endothelial growth factor (VEGF) inhibitor category since they combine with the VEGF released by tumor cells in order to reduce angiogenesis; cetuximab and panitumumab fall into the epidermal growth factor receptor (EGFR) inhibitor category, since they inhibit tumor cell growth, division, and transfer. Here, EGFR is linked to neoplasm.