RT Journal Article SR Electronic T1 Kyoto international consensus report on anatomy, pathophysiology and clinical significance of the gastro-oesophageal junction JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1488 OP 1514 DO 10.1136/gutjnl-2022-327281 VO 71 IS 8 A1 Kentaro Sugano A1 Stuart Jon Spechler A1 Emad M El-Omar A1 Kenneth E L McColl A1 Kaiyo Takubo A1 Takuji Gotoda A1 Mitsuhiro Fujishiro A1 Katsunori Iijima A1 Haruhiro Inoue A1 Takashi Kawai A1 Yoshikazu Kinoshita A1 Hiroto Miwa A1 Ken-ichi Mukaisho A1 Kazunari Murakami A1 Yasuyuki Seto A1 Hisao Tajiri A1 Shobna Bhatia A1 Myung-Gyu Choi A1 Rebecca C Fitzgerald A1 Kwong Ming Fock A1 Khean-Lee Goh A1 Khek Yu Ho A1 Varocha Mahachai A1 Maria O'Donovan A1 Robert Odze A1 Richard Peek A1 Massimo Rugge A1 Prateek Sharma A1 Jose D Sollano A1 Michael Vieth A1 Justin Wu A1 Ming-Shiang Wu A1 Duowu Zou A1 Michio Kaminishi A1 Peter Malfertheiner YR 2022 UL http://gut.bmj.com/content/71/8/1488.abstract AB Objective An international meeting was organised to develop consensus on (1) the landmarks to define the gastro-oesophageal junction (GOJ), (2) the occurrence and pathophysiological significance of the cardiac gland, (3) the definition of the gastro-oesophageal junctional zone (GOJZ) and (4) the causes of inflammation, metaplasia and neoplasia occurring in the GOJZ.Design Clinical questions relevant to the afore-mentioned major issues were drafted for which expert panels formulated relevant statements and textural explanations.A Delphi method using an anonymous system was employed to develop the consensus, the level of which was predefined as ≥80% of agreement. Two rounds of voting and amendments were completed before the meeting at which clinical questions and consensus were finalised.Results Twenty eight clinical questions and statements were finalised after extensive amendments. Critical consensus was achieved: (1) definition for the GOJ, (2) definition of the GOJZ spanning 1 cm proximal and distal to the GOJ as defined by the end of palisade vessels was accepted based on the anatomical distribution of cardiac type gland, (3) chemical and bacterial (Helicobacter pylori) factors as the primary causes of inflammation, metaplasia and neoplasia occurring in the GOJZ, (4) a new definition of Barrett’s oesophagus (BO).Conclusions This international consensus on the new definitions of BO, GOJ and the GOJZ will be instrumental in future studies aiming to resolve many issues on this important anatomic area and hopefully will lead to better classification and management of the diseases surrounding the GOJ.