Chakravorty Chakravorty M M Ghosh Ghosh A A Choudhury Choudhury A A Santra Santra A A Hembrum Hembrum J J Roychoudhury Roychoudhury S S Interaction between IL-1β gene promoter polymorphisms in determining susceptibility to Helicobacter pylori-associated duodenal ulcer Interaction between IL-1β gene promoter polymorphisms in determining susceptibility to Helicobacter pylori-associated duodenal ulcer Hum Mutat Hum Mutat 2006 2006 27 27 411 411 419 419 10.1002/humu.20299 10.1002/humu.20299 16550552 16550552. This evidence concerns the gene IL1B and duodenal ulcer.