STAG2 and neoplasm: Mean time for tumor development was 1.2 months (range 0.8–1.8 months) for Stag2 shRNA+10Gy cells with Stag2 knockdown and 3.1 months (range 1.6–5.5 months) for Ctrl shRNA+10Gy cells without Stag2 knockdown (p < .001).