Complex sentence: Pertuzumab (also called 2C4 and Omnitarg ®) is a monoclonal antibody, the first of its class in a line of agents called "HER dimerization inhibitors".
Split into simpler sentences: Pertuzumab (also called 2C4 and by its brand name Omnitarg) is a monoclonal antibody. The first of its class in a line of agents called "HER dimerization inhibitors".