OFP-11-002 WWTR1 and CYR61 are early markers of Barrett's esophagus malignant progression M. Mesquita * , J. Cardoso, A. Pereira, S. Braga, M. Bettencourt-Dias, P. Chaves, J. Pereira-Leal * IPOLFG, Dept. of Pathology, Lisboa, Portugal