quilizumab quilizumab quilizumab (inn) is a humanized monoclonal antibody designed for the treatment of asthma. it binds to ighe. quilizumabmonoclonal antibodytypewhole antibodysourcehumanized (from mouse)targetigheclinical dataatc codenoneidentifierscas number1228538-47-3chemspidernoneunii26f96hrj3wkeggd10409chemical and physical dataformulac6492h10046n1728o2023s44molar mass146082.49 g·mol−1 this drug was developed by genentech.