| Recruiting | PROGAIN Trial in Gastric Cancer Surgery Stomach (Gastric) Cancer | Phase 3 | 2026-02-13 |
| Not Yet Recruiting | Virtual Reality Treatment for Trauma Related to COVID-19 Infection PTSD, PTSD Symptoms | N/A | 2025-11-01 |
| Not Yet Recruiting | Abscopal Effect from Low-dose Radiotherapy in Metastatic Cancer Combined with Stereotactic Body Radiotherapy Neoplasms, Secondary Malignant Neoplasm | N/A | 2025-06-01 |
| Recruiting | Tegoprazan and Amoxicillin Dual Therapy H.Pylori Infection | — | 2025-01-01 |
| Recruiting | Tegoprazan- Versus PPI-based H. Pylori Eradication H.Pylori Infection | — | 2024-12-01 |
| Recruiting | RUT vs. Molecular Testing for H. Pylori H.Pylori Infection | — | 2024-11-01 |
| Not Yet Recruiting | Digital Single-operator Cholangioscopy and Intraductal Ultrasound for Nonicteric Biliary Strictures Cholangiocarcinoma, Biliary Stricture | — | 2024-05-05 |
| Completed | Comparison of Twice- and Four-times-daily Amoxicillin Administration in 2-week Tegoprazan-based H. Pylori Erad H.Pylori Infection | — | 2024-04-01 |
| Unknown | A Single-center Clinical Study to Evaluate the Safety and Efficacy of Autologous Bone Marrow-derived DCs(Cellg Pancreas Cancer | Phase 1 / Phase 2 | 2024-03-01 |
| Unknown | Assessment of Cutting-Balloon Angioplasty With Everolimus-Eluting Stent(EES) in the Treatment of Coronary Calc Coronary Artery Disease | N/A | 2024-01-01 |
| Completed | Immunologic Changes and Recovery-related Factors in Elderly Colon Cancer Patients Cancer of Colon, Interleukins, Aged | Phase 2 | 2023-09-04 |
| Recruiting | Abscopal Effect from the Low-dose Radiotherapy in Polymetastatic Cancer Patients Receiving Stereotactic Radiot Neoplasms, Secondary Malignant Neoplasm | N/A | 2023-01-03 |
| Unknown | Screening Single-operator Cholangioscopy for Neoplastic Bile Duct Lesions Cholangiocarcinoma, Bile Duct Neoplasms | — | 2022-10-30 |
| Unknown | Intestinal Microbiome-based Research for the Prevention of Acute GVHD Graft Versus Host Disease, Postbiotics, Butyrate | Phase 2 | 2022-09-02 |
| Completed | Learning Curve for Gastric Endoscopic Submucosal Dissection Endoscopic Submucosal Dissection, Gastric Neoplasm | — | 2022-03-01 |
| Completed | Endoscopic Grading of Intestinal Metaplasia Narrow-band Imaging, Magnifying Endoscopy, Gastric Intestinal Metaplasia | — | 2022-03-01 |
| Recruiting | Twice vs Thrice Weekly Incident Hemodialysis in Elderly Patients Age Problem, Dialysis; Complications, Frailty | N/A | 2021-11-23 |
| Completed | Bismuth for PCAB-based H. Pylori Eradication H. Pylori Infection | — | 2020-03-01 |
| Completed | Serum Pepsinogen After H. Pylori Eradication Helicobacter Pylori Eradication | — | 2019-03-15 |
| Completed | Surrogate Quality Indicators for Adenoma Detection Rate (ADR) Colon Adenoma | — | 2018-07-01 |
| Unknown | Spray vs EMLA Cream on Pain During Intra-articular Injection Adhesive Capsulitis of the Shoulder | Phase 4 | 2018-03-14 |
| Completed | H. Pylori Treatment Between Modified Quadruple Regimen and Tailored Therapy H. Pylori Infection | — | 2018-01-01 |
| Unknown | Korean Cohort Study of AKI & HRS in Cirrhosis Liver Cirrhosis, Acute Kidney Injury, Hepatorenal Syndrome | — | 2017-08-01 |
| Unknown | Assessment of Chest Compression Depth Obtained Using the Smartphone Application as an Educational Tool With Ne Basic Cardiac Life Support | N/A | 2017-01-01 |
| Unknown | The Effect of Branched-chain Amino Acid on the Improvement of Serum Albumin Level in Cirrhotic Patients With A Cirrhosis, Ascites | Phase 4 | 2016-07-01 |
| Completed | Magnifying NBI Endoscopy for Gastric Condition Gastritis H Pylori | — | 2016-06-01 |
| Unknown | The Mammography and Ultrasonography STudy for Breast Cancer Screening Effectiveness Invasive Cancer, Ductal Carcinoma in Situ | — | 2016-05-02 |
| Completed | Optimal Site for Rapid Urease Test in the Stomach Helicobacter Pylori Infection | — | 2016-01-01 |
| Completed | Usefulness of NBI for Complete Endoscopic Resection of SSA/P Sessile Serrated Adenoma/Polyps | N/A | 2015-12-23 |
| Unknown | Dexlansoprazole MR in Nonerosive Reflux Disease Nonerosive Reflux Disease | N/A | 2014-12-01 |
| Completed | Direct Peroral Cholangioscopy by Using an Ultra-slim Upper Endoscope Bile Duct Stricture, Choledocholithiasis | N/A | 2014-08-01 |
| Completed | Cold Snare Polypectomy Vs. Cold Forceps Polypectomy Using Narrow-band Imaging Endoscopy for Removal of Diminut Polyp of Large Intestine | N/A | 2014-07-01 |
| Unknown | Prophylactic Clip Application for Colon Polypectomy in Patients With Anticoagulation Colon Polyp | N/A | 2014-04-01 |
| Unknown | Multibending vs Conventional Endoscope for Direct Peroral Cholangioscopy Common Bile Duct Calculi, Biliary Tract Cancer, Biliary Stricture | N/A | 2014-04-01 |
| Completed | Clinical Effects and Safety of 3% Diquafosol After Cataract Surgery Dry Eye Syndromes | N/A | 2014-01-01 |
| Completed | The Clinical Feature of Ulcer Base Over Time After Prophylactic Argon Plasma Coagulation in Colonic EMR Gastrointestinal Hemorrhage | — | 2013-08-01 |
| Completed | Surgicel® Fibrillar for Delayed Bleeding After ESD Benign Neoplasm of Stomach, Malignant Neoplasm of Stomach | N/A | 2012-12-01 |
| Unknown | Laparoscopy-assisted Total Gastrectomy for Clinical Stage I Gastric Cancer (KLASS-03) Gastric Cancer | Phase 2 | 2012-10-01 |
| Completed | Endoscopic Submucosal Dissection Using a Thulium Laser Gastric Dysplasia | — | 2012-10-01 |
| Unknown | Transversus Abdominis Plane Block and Postoperative Pain After Laparoscopic Cholecystectomy Laparoscopic Cholecystectomy, Postoperative Pain, Abdominal Muscles | N/A | 2012-07-01 |
| Completed | BuCE Versus BuME as Conditioning Therapy in Non-Hodgkin's Lymphoma Non-hodgkin Lymphoma | Phase 2 | 2012-06-01 |
| Unknown | Postpolypectomy Bleeding in Patients With Antiplatelet Therapy Bleeding Complication During Colon Polypectomy | N/A | 2012-04-01 |
| Completed | Conventional Biopsies vs pCLE for Diagnosis of Superficial Gastric Neoplasia Early Gastric Cancer, Gastric Dysplasia | — | 2012-02-01 |
| Unknown | The Effect of Education on Decreasing the Prevalence and Severity of Neck and Shoulder Pain Korean, Male, Adolescents | — | 2012-01-01 |
| Completed | Phase 2 Study of Erlotinib, Gemcitabine and Oxaliplatin Combination Chemotherapy to Advanced Pancreatic Cancer Pancreatic Cancer | Phase 2 | 2011-01-01 |
| Completed | The Efficacy of Solifenacin With or Without Tamsulosin in Adult Women With Overactive Bladder (OAB) Overactive Bladder | Phase 4 | 2010-12-01 |
| Unknown | The Effect of Obesity on Ventilation Tube Insertion Otitis Media, Obesity | — | 2010-10-01 |
| Completed | Horner's SD After Thoracic Epidural Block Horner's Syndrome | — | 2010-09-01 |
| Completed | Effectiveness of Ziprasidone for Patients With Schizophrenia Schizophrenia, Schizoaffective Disorder | Phase 4 | 2010-09-01 |
| Unknown | Prophylactic Pancreatic Duct Stent Placement After ESP of Major Papillary Tumors; Prospective, Randomized Stud Ampulla of Vater Adenoma | Phase 4 | 2010-03-01 |
| Withdrawn | the Effectiveness of Probiotics on Atopic Dermatitis With Cow Milk Allergy Atopic Dermatitis | N/A | 2010-01-01 |
| Completed | Busulfan, Melphalan and Etoposide as Conditioning for Autologous Transplantation for Non-Hodgkin's Lymphoma (N Non-Hodgkin's Lymphoma | Phase 2 | 2009-10-01 |
| Completed | Assessment of UTI Symptoms and Quality of Life According to Antibiotics Treatment in Acute Uncomplicated Cysti Acute Cystitis | — | 2009-10-01 |
| Unknown | Attenuated SOX as First-line Treatment in Elderly Patients With Relapsed or Metastatic Gastric Cancer Elderly, S-1, Oxaliplatin | Phase 2 | 2009-08-01 |
| Completed | Changes in Anatomical Landmark Locations Anesthesia, General, Intubation | — | 2009-05-01 |
| Completed | Triamcinolone Paste to Reduce the Incidence of Postoperative Sore Throat Tracheal Intubation | N/A | 2008-05-01 |
| Completed | The No-Tie Technique Using the Harmonic Scalpel in Total Thyroidectomy With Central Neck Dissection: A Prospec Hemorrhage, Hypocalcemia, Vocal Cord Palsy | — | 2006-10-01 |
| Completed | A Phase II Study of Gemcitabine With Oxaliplatin as First Line Chemotherapy in Advanced Biliary Tract Cancer Advanced Biliary Tract Adenocarcinoma, Gemcitabine, Oxaliplatin | Phase 2 | 2006-09-01 |
| Completed | Endoscopic Submucosal Dissection Versus Gastrectomy Early Gastric Cancer | — | 2003-05-01 |
| Unknown | Surgicel® (Fibrillar) in Non-variceal UGI Bleeding Non-variceal Upper Gastrointestinal Bleeding | N/A | — |