In this research study, the investigators are looking at the safety and tolerability of the Personalized NeoAntigen Cancer Vaccine combined with Ipilimumab as well as the body's immune response to the vaccine. Ipilimumab will be delivered as an injection given underneath the skin rather than injected in the vein in proximity to each vaccination site in order to 1) direct anti-CTLA4 activity to the vaccine-draining lymph nodes and 2) limit potential toxic effects.