This study has two parts and participants may be involved in either Phase I part or Phase II.
Phase I: Investigators plan to enroll participants in cohorts of 6 and monitor side effects over a 21 day period to determine the maximum tolerated dose (MTD) of nivolumab, which will be given in combination with GM.CD40L. This is being done since this study involves a combination of treatments that have not been studied in humans before and to find the best dose for the Phase II part of the study.
Phase II: Investigators plan to compare any clinical benefit in the participants who receive the combination of GM.CD40L vaccine with nivolumab, to participants that receive only nivolumab.
