Immunotherapy Targeting of Cytomegalovirus Antigens in Glioblastoma

The PEP-CMV vaccine is a long synthetic peptide (PEP) made up of 26 amino acids that is derived from the human cytomegalovirus (CMV) matrix protein pp65 and has both MHC class I and II epitopes. A vaccine platform that initially consists of TMZ-induced lymphopenia and Td pre-conditioning will be used, with serial vaccinations of up to 12 times (maximum 20) being applied. To ensure the effectiveness of the future Td pre-conditioning, which is given right before the initial PEP-CMV vaccine, a Td booster is required at enrollment.