 Risk Factors for BE and adenocarcinoma. The epidemiology and natural history of BE has been poorly studied. Some factors have been associated with an increased risk for esophageal adenocarcinoma in the general population see Table 1, but risk factors for progression in BE patients are not clear. A number of risk factors have been suggested as factors of risk in BE patients including age, gender, ethnicity, GERD symptoms, family history of BEcancer, alcohol, tobacco, dietary factors fat intake, cereal fiber, calcium etc. acid suppressive medications, biomarkers, genetic markers etc. Given this long list of possible risk factors, we propose to convene a panel of experts in a planning committee to serve as jury in order to determine which of the potential risk factors should be measured in a prospective study and how they should be measured. This would narrow and refine the list of risk factors for the prospective study. 