Chair:
Jae Gyu Kim（Chung-Ang University College of Medicine, Korea）
Masumi Okuda（Department of Pediatrics, Hyogo Medical University, Japan）
　
O-K1 Role of High Expression of Claudin-4 for Prediction of Synchronous Tumors in Patients with Early Gastric Cancer
Moon Kyung Joo（ Division of Gastroenterology, Department of Internal Medicine, Korea University Guro Hospital, Korea
University College of Medicine, Korea）
　
O-K2 Establishment of patient-derived gastric cancer organoid model from tissue obtained by endoscopic biopsies
Jae Gyu Kim（Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul 06973, Korea）
　
O-K3 Inverse association between Helicobacter pylori infection and eosinophilic esophagitis:A single tertiary center experience
Young Hoon Chang（ Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South
Korea）
　
O-K4 Development of New Liquid Type Rapid Urease Test Kit (Helico Test):Comparison with Other Kits
Hannah Lee（ Division of Gastroenterology, Department of Internal Medicine, Gil Medical Center, Gachon University
College of Medicine, Incheon, Republic of Korea）
　
O-K5 Proton pump inhibitors use and the risk of rheumatoid arthritis;A Nationwide Cohort Study
Tae Jun Kim（Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea）
　
O-K6 The prediction of Helicobacter pylori infection by endoscopic erythematous/exudative gastritis
One Zoong Kim（Uijeongbu Eulji Medical Center, Eulji University, Korea）
　
O-K7 Efficacy of tegoprazan-based Helicobacter pylori eradication therapy in Korea
Dong Chan Joo（ Department of Internal Medicine, Pusan National University College of Medicine and Biomedical Research Institute, Pusan National University Hospital, 179, Gudeok‑ro, Seo‑Gu, Busan 49241, Republic of Korea）
　
O-K8 Tailored Therapy with Bismuth add-on vs. Concomitant Therapy for H. pylori eradication
Soo Yeon Choi（ Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea）
　
O-K9 Interval Advanced Gastric Cancer After Negative Endoscopy
Tae Jun Kim（Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea）
　
O-J1 Biofilm Formation and Antibiotic Resistance Phenotype of Helicobacter pylori Clinical Isolates
Kartika Afrida Fauzia（ Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, Yufu,
Japan. / Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia.）
　
O-J2 A reference panel of Helicobacter pylori strains for antimicrobial susceptibility test
Shunji Hayashi（Kitasato University School of Medicine, Japan）
　
O-J3 Long-term cryopreservation of Helicobacter pylori strains
Shunji Hayashi（Kitasato University School of Medicine, Japan）
　
O-J4 Genomic differentiation through host/microbiome adaptation within East Asian Helicobacter pylori
Ichizo Kobayashi（Research Center for Micro-Nano Technology, Hosei University, Japan）