Wiktionary
tremelimumab
n. A human monoclonal antibody that binds to the protein CTLA-4, under investigation to treat various kinds of tumour.
Wikipedia
Tremelimumab
Tremelimumab (formerly ticilimumab, CP-675,206) is a fully human monoclonal antibody against CTLA-4. It is an immune checkpoint blocker. Previously in development by Pfizer, it is now in investigation by MedImmune, a wholly owned subsidiary of AstraZeneca. It has been undergoing human trials for the treatment of various cancers but has not attained approval for any.