31 Kiltz Kiltz U U Pfaffenbach Pfaffenbach B B Schmidt Schmidt WE WE Adamek Adamek RJ RJ The lack of influence of CagA positive Helicobacter pylori strains on gastro-oesophageal reflux disease The lack of influence of CagA positive Helicobacter pylori strains on gastro-oesophageal reflux disease Eur J Gastroenterol Hepatol. The gene discussed is S100A8; the disease is gastroesophageal reflux disease.