| 2020 | | 2019 Seoul Consensus on Esophageal Achalasia Guidelines | 이광재 |
| 2021 | | 2020 Seoul consensus on the diagnosis and management of gastroesophageal reflux disease | 이광재 |
| 2017 | | Alterations of Food-specific Serum IgG4 Titers to Common Food Antigens in Patients With Irritable Bowel Syndrome | 이광재 |
| 2012 | | Asian Consensus Report on Functional Dyspepsia | 이광재 |
| 2015 | | Association of the Extent of Atrophic Gastritis With Specific Dyspeptic Symptoms. | 양민재, 이광재, 임선교 |
| 2022 | | Clinical Practice Guidelines for Fecal Microbiota Transplantation in Korea | 이광재 |
| 2016 | | Effect of DA-9701 on the Normal Motility and Clonidine-induced Hypomotility of the Gastric Antrum in Rats | 이광재 |
| 2018 | | Effects of the Administration of Probiotics on Fecal Microbiota Diversity and Composition in Healthy Individuals | 노충균, 이광재, 정재연 |
| 2021 | | Efficacy and safety of DWJ1252 compared with gasmotin in the treatment of functional dyspepsia: A multicenter, randomized, double-blind, active-controlled study | 이광재 |
| 2014 | | Efficacy and Safety of Tiropramide in the Treatment of Patients With Irritable Bowel Syndrome: A Multicenter, Randomized, Double-blind, Non-inferiority Trial, Compared With Octylonium. | 이광재 |
| 2016 | | Efficacy of DA-9701 (Motilitone) in Functional Dyspepsia Compared to Pantoprazole: A Multicenter, Randomized, Double-blind, Non-inferiority Study | 이광재 |
| 2020 | | Fecal Microbiota Alterations and Small Intestinal Bacterial Overgrowth in Functional Abdominal Bloating/Distention | 노충균, 이광재 |
| 2012 | | G-Protein Beta3 Subunit C825T Polymorphism in Patients With Overlap Syndrome of Functional Dyspepsia and Irritable Bowel Syndrome | 이광재, 임선교, 정재연, 조성원 |
| 2013 | | Gastric emptying in patients with functional dyspepsia and patients with migraine. | 이광재 |
| 2016 | | Guidelines for the Diagnosis and Treatment of Chronic Functional Constipation in Korea, 2015 Revised Edition | 이광재 |
| 2012 | | Is There Enough Evidence for the Association of GNՂ3 C825T Polymorphism With Functional Dyspepsia and Irritable Bowel Syndrome?: Author's Reply | 이광재 |
| 2011 | | Nocturnal Gastroesophageal Reflux: Assessment and Clinical Implications | 이광재 |
| 2022 | | On-demand Versus Continuous Maintenance Treatment of Gastroesophageal Reflux Disease With Proton Pump Inhibitors: A Systematic Review and Meta-analysis | 이광재 |
| 2023 | | On-demand Versus Continuous Maintenance Treatment With a Proton Pump Inhibitor for Mild Gastroesophageal Reflux Disease: A Prospective Randomized Multicenter Study | 이광재 |
| 2015 | | Randomized, Controlled, Multi-center Trial: Comparing the Safety and Efficacy of DA-9701 and Itopride Hydrochloride in Patients With Functional Dyspepsia. | 이광재 |
| 2023 | | Real-world Prescription Patterns and Patient Satisfaction Regarding Maintenance Therapy of Gastroesophageal Reflux Disease: An Observational, Cross-sectional, Multicenter Study | 이광재 |
| 2017 | | The Effect of Acute Stress on Esophageal Motility and Gastroesophageal Reflux in Healthy Humans | 노충균, 이광재 |
| 2020 | | The Usefulness of Esophageal Baseline Impedance Levels for the Diagnosis of Nonerosive Reflux Disease and the Proper Time for Measurement in Endoscopy-negative Korean Patients With Esophageal or Supraesophageal Symptoms | 노충균, 이광재 |
| 2021 | | The usefulness of symptom-based subtypes of functional dyspepsia for predicting underlying pathophysiologic mechanisms and choosing appropriate therapeutic agents | 이광재 |
