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 Sugano, Kentaro A1 Spechler, Stuart Jon A1 El-Omar, Emad M A1 McColl, Kenneth E L A1 Takubo, Kaiyo A1 Gotoda, Takuji A1 Fujishiro, Mitsuhiro A1 Iijima, Katsunori A1 Inoue, Haruhiro A1 Kawai, Takashi A1 Kinoshita, Yoshikazu A1 Miwa, Hiroto A1 Mukaisho, Ken-ichi A1 Murakami, Kazunari A1 Seto, Yasuyuki A1 Tajiri, Hisao A1 Bhatia, Shobna A1 Choi, Myung-Gyu A1 Fitzgerald, Rebecca C A1 Fock, Kwong Ming A1 Goh, Khean-Lee A1 Ho, Khek Yu A1 Mahachai, Varocha A1 O'Donovan, Maria A1 Odze, Robert A1 Peek, Richard A1 Rugge, Massimo A1 Sharma, Prateek A1 Sollano, Jose D A1 Vieth, Michael A1 Wu, Justin A1 Wu, Ming-Shiang A1 Zou, Duowu A1 Kaminishi, Michio A1 Malfertheiner, Peter 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.