Dellon, Evan SEvan SDellonGonsalves, NirmalaNirmalaGonsalvesAbonia, J PabloJ PabloAboniaAlexander, Jeffrey AJeffrey AAlexanderArva, Nicoleta CNicoleta CArvaAtkins, DanDanAtkinsAttwood, Stephen EStephen EAttwoodAuth, Marcus KhMarcus KhAuthBailey, Dominique DDominique DBaileyBiederman, LucLucBiedermanBlanchard, CarineCarineBlanchardBonis, Peter APeter ABonisBose, ParomaParomaBoseBredenoord, Albert JAlbert JBredenoordChang, Joy WJoy WChangChehade, MirnaMirnaChehadeCollins, Margaret HMargaret HCollinsDi Lorenzo, CarloCarloDi LorenzoDias, Jorge AmilJorge AmilDiasDohil, RanjanRanjanDohilDupont, ChristopheChristopheDupontFalk, Gary WGary WFalkFerreira, Cristina TCristina TFerreiraFox, Adam TAdam TFoxGenta, Robert MRobert MGentaGreuter, ThomasThomasGreuterGupta, Sandeep KSandeep KGuptaHirano, IkuoIkuoHiranoHiremath, Girish SGirish SHiremathHorsley-Silva, Jennifer LJennifer LHorsley-SilvaIshihara, ShunjiShunjiIshiharaIshimura, NorihisaNorihisaIshimuraJensen, Elizabeth TElizabeth TJensenGutiérrez-Junquera, CarolinaCarolinaGutiérrez-JunqueraKatzka, David ADavid AKatzkaKhoury, PaneezPaneezKhouryKinoshita, YoshikazuYoshikazuKinoshitaKliewer, Kara LKara LKliewerKoletzko, SibylleSibylleKoletzkoLeung, JohnJohnLeungLiacouras, Chris AChris ALiacourasLucendo, Alfredo JAlfredo JLucendoMartin, Lisa JLisa JMartinMcGowan, Emily CEmily CMcGowanMenard-Katcher, CaliesCaliesMenard-KatcherMetz, David CDavid CMetzMiller, Talya LTalya LMillerMoawad, Fouad JFouad JMoawadMuir, Amanda BAmanda BMuirMukkada, Vincent AVincent AMukkadaMurch, SimonSimonMurchNhu, Quan MQuan MNhuNomura, IchiroIchiroNomuraNurko, SamuelSamuelNurkoOhtsuka, YoshikazuYoshikazuOhtsukaOlivia, SalvatoreSalvatoreOliviaOrel, RokRokOrelPapadopoulou, AlexandraAlexandraPapadopoulouPatel, Dhyanesh ADhyanesh APatelPesek, Robert DRobert DPesekPeterson, Kathryn AKathryn APetersonPhilpott, HamishHamishPhilpottPutnam, Philip EPhilip EPutnamRichter, Joel EJoel ERichterRosen, RachelRachelRosenRuffner, Melanie AMelanie ARuffnerSafroneeva, EkaterinaEkaterinaSafroneevaSchreiner, PhilippPhilippSchreinerSchoepfer, AlainAlainSchoepferSchroeder, Shauna RShauna RSchroederShah, NeilNeilShahSouza, Rhonda FRhonda FSouzaSpechler, Stuart JStuart JSpechlerSpergel, Jonathan MJonathan MSpergelStraumann, AlexAlexStraumannTalley, Nicholas JNicholas JTalleyThapar, NikhilNikhilThaparVandenplas, YvanYvanVandenplasVenkatesh, Rajitha DRajitha DVenkateshVieira, Mario CMario CVieiravon Arnim, UlrikeUlrikevon ArnimWalker, Marjorie MMarjorie MWalkerWechsler, Joshua BJoshua BWechslerWershil, Barry KBarry KWershilWright, Benjamin LBenjamin LWrightYamada, YoshiyukiYoshiyukiYamadaYang, Guang-YuGuang-YuYangZevit, NoamNoamZevitRothenberg, Marc EMarc ERothenbergFuruta, Glenn TGlenn TFurutaAceves, Seema SSeema SAceves2024-10-092024-10-092022-11https://boris-portal.unibe.ch/handle/20.500.12422/67625BACKGROUND & AIMS Substantial heterogeneity in terminology used for eosinophilic gastrointestinal diseases (EGID), particularly the catchall term "eosinophilic gastroenteritis", limits clinical and research advances. We aimed to achieve an international consensus for standardized EGID nomenclature. METHODS This consensus process utilized Delphi methodology. An initial naming framework was proposed and refined in iterative fashion, then assessed in a first round of Delphi voting. Results were discussed in two consensus meetings, the framework was updated, and re-assessed in a second Delphi vote, with a 70% threshold set for agreement. RESULTS Of 91 experts participating, 85 (93%) completed the first and 82 (90%) completed the second Delphi surveys. Consensus was reached on all but two statements. "EGID" was the preferred umbrella term for disorders of GI tract eosinophilic inflammation in the absence of secondary causes (100% agreement). Involved GI tract segments will be named specifically and use an "Eo" abbreviation convention: eosinophilic gastritis (now abbreviated EoG), eosinophilic enteritis (EoN), and eosinophilic colitis (EoC). The term "eosinophilic gastroenteritis" is no longer preferred as the overall name (96% agreement). When >2 GI tract areas are involved, the name should reflect all of the involved areas. CONCLUSIONS This international process resulted in consensus for updated EGID nomenclature for both clinical and research use. EGID will be the umbrella term rather than "eosinophilic gastroenteritis", and specific naming conventions by location of GI tract involvement are recommended. As more data are developed, this framework can be updated to reflect best practices and the underlying science.enDelphi classification eosinophilic gastroenteritis eosinophilic gastrointestinal disease nomenclature600 - Technology::610 - Medicine & health300 - Social sciences, sociology & anthropology::360 - Social problems & social servicesarticle10.48350/1657603518157010.1016/j.cgh.2022.02.017