STAG2 loss amplifies EWS-FLI1-driven microsatellite enhancer activity promoting Ewing sarcoma aggressiveness - Sanjana Eyunni; Shih-Chun Chu; Mary L. Guan; Michaela Louw; Eleanor Young; Sandra E. Carson; Jianhui Gong; Marcin Cieslik; Arul M. Chinnaiyan; Abhijit Parolia (Proceedings of the National Academy of Sciences, 2026)