I. To determine the effectiveness of sirolimus on enhancing vaccine efficacy by assessing NY-ESO-1 specific cellular and humoral immunity: peripheral blood NY-ESO-1 specific cluster of differentiation (CD)8+ and CD4+ T-cells; peripheral blood NY-ESO-1 specific antibodies; peripheral blood frequency of CD4+CD25+forkhead box P3 (FOXP3)+ regulatory T-cells.