Re Quiz When MedImmune (AZN subsidiary) has in-licensed tremelimumab back in 2011, Pfizer has retained the rights to use tremelimumab with specified types of combination therapies. In the study you cited, It is given to some patients as part of a possible regimen, with the vax booster (plasmid DNA) in hope that an anti CTLA-4 will further increase the immune response of the vaccine.
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