The story
From [Term?] + -li- (“immunomodulating”) + -zumab (“humanized monoclonal antibody”).
Etymology from Wiktionary, CC BY-SA 4.0.
efalizumab
Today it means: A recombinant humanized monoclonal antibody, formerly available to treat autoimmune diseases, especially psoriasis, by binding CD11a of lymphocyte function-associated antigen 1, and associated with fatal brain infections. Full definition →