This is a single-center, prospective randomized Phase 2 trial evaluating the activity, safety and immune effects of dasatinib given in combination with an autologous type-1 polarized Dendritic Cell (αDC1) vaccine. The current trial represents a randomized Phase 2 study to determine the activity and safety of intradermal (id) administration of αDC1s loaded with a mixture of six TBVA-derived peptides at the time of, or immediately after, an initial therapy cycle with the TKI dasatinib.