When the time to achieve an average tumor size of 1500 mm3 was calculated, it was 26 days for cold h8C3, 28 days for anti-PD1 mAb alone, 31 days for two doses of RIT, and 43.5 days for the combination of two doses of RIT and anti-PD-1 mAb. Here, PDCD1 is linked to neoplasm.