An international consortium co-led by researchers at Fred Hutchinson Cancer Research Center and the QIMR Berghofer Medical Research Institute in Australia has identified four genetic variants associated with an increased risk of esophageal cancer and its precursor, a condition called Barrett’s esophagus.
http://medicalxpress.com/news/2013-10-genetic-variants-linked-esophageal-cancer.html
Four genetic variants linked to esophageal cancer and Barrett’s esophagus