NCIt definition : A personalized cancer vaccine comprised of a chimpanzee adenovirus vector (ChAdV)
encoding twenty tumor-specific neoantigens (TSNAs) that have been identified through
genetic sequencing of a patient's tumor cells, with potential immunostimulatory and
antineoplastic activities. Upon intramuscular administration of the adenoviral-TSNA
priming vaccine GRT-C901, the adenovirus infects cells and expresses the TSNAs. This
stimulates the host immune system to mount a cytotoxic T-lymphocyte (CTL) response
against tumor cells expressing the TSNAs, leading to tumor cell lysis. Adenoviral-TSNA
vaccine GRT-C901 is followed by monthly boosting with a self-amplifying mRNA (SAM)
boosting vaccine that encodes the same 20 target TSNAs. The combined immunotherapy
product, consisting of priming and boosting vaccines, is referred to as GRANITE-001.;