alacizumab pegol alacizumab pegol alacizumab pegol is an antineoplastic agent. chemically, it is a pegylated f(ab')2 fragment of a monoclonal antibody. alacizumab pegolmonoclonal antibodytypef(ab')2 fragmentsourcehumanized (from mouse)targetvegfr2clinical dataatc codenoneidentifierscas number934216-54-3 nchemspidernoneuniizl9780f883 ny (what is this?) (verify)