enoticumab enoticumab enoticumab (regn421, inn) is a human monoclonal antibody that binds to dll4. it acts as an immunomodulator. enoticumabmonoclonal antibodytypewhole antibodysourcehumantargetdll4clinical dataother namesregn421atc codenoneidentifierscas number1192578-27-0chemspidernoneuniib59dcd0f7dkeggd10460 y