The median follow-up for overall survival (Panel A) in the ipilimumab (Ipi)-plus-glycoprotein 100 (gp100) group was 21.0 months, and the median overall survival was 10.0 months (95% CI, 8.5 to 11.5); in the ipilimumabalone group, the median follow-up was 27.8 months, and the median overall survival, 10.1 months (95% CI, 8.0 to 13.8); and in the gp100-alone group, the median follow-up was 17.2 months, and the median overall survival, 6.4 months (95% CI, 5.5 to 8.7). The median progression-free survival (Panel B) was 2.76 months (95% CI, 2.73 to 2.79) in the ipilimumab-plus-gp100 group, 2.86 months (95% CI, 2.76 to 3.02) in the ipilimumab-alone group, and 2.76 months (95% CI, 2.73 to 2.83) in the gp100-alone group. The rates of progression-free survival at week 12 were 49.1% (95% CI, 44.1 to 53.9) in the ipilimumab-plus-gp100 group, 57.7% (95% CI, 48.9 to 65.5) in the ipilimumab-alone group, and 48.5% (95% CI, 39.6 to 56.7) in the gp100-alone group.