Panitumumab, sold under the brand name Vectibix, is a fully human monoclonal antibody specific to the epidermal growth factor receptor (also known as EGF receptor, EGFR, ErbB-1 and HER1 in humans).
Panitumumab is manufactured by Amgen and was originally developed by Abgenix Inc.
In 2014, Amgen and Illumina entered into an agreement to develop a companion diagnostic to accompany panitumumab.