Roughly one-fifth of all human cancers arise in the gastrointestinal tract. Worldwide, over 3.5 million patients are newly diagnosed with GI tract cancer each year, of whom 310,000 are in the U.S. alone. These malignancies show marked gender, racial and socioeconomic differences in incidence. For instance, esophageal and gastric adenocarcinomas occur more frequently in U.S. […]