Metagenomic Analysis of Gut Microbiome in Korean Patients With Ulcerative Colitis

Inclusion Criteria: * Between the age of 19 and 75 years * willing to consent/undergo necessary procedures * clinically active or inactive Ulcerative colitis Exclusion Criteria: * Inability to provide informed consent or * Clinically severe or fulminant ulcerative colitis * Previous abdominal surgery * Pregnancy * Clinically or laboratory-confirmed gastroenteritis for at least 3 months before sampling * the use of antibiotics in the past a month before sampling * the use of probiotics in the past a month before sampling * Severe cardiovascular or pulmonary disease * Severe convulsive disorder and current use of anti-convulsive medication * Malignancy * Transplantation