 The planned research program has the aim to develop and validate an AI for EoE EEsAI for adult adEEsAI and pediatric pedEEsAI patients, which can be used in future clinical trials and observational studies. According to the characterization of EoE, the AI will likely contain clinical and histopathological items. Laboratory and endoscopical parameters may be part of the score, but in a subsidiary role. 