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Epidemiology of Inflammatory Bowel Disease in the Songpa-Kangdong District, Seoul, Korea.

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ClinicalTrials.gov Identifier: NCT01731665
Recruitment Status : Recruiting
First Posted : November 22, 2012
Last Update Posted : July 12, 2016
Sponsor:
Collaborators:
Kyung Hee University Hospital at Gangdong
Seoul National University Hospital
Seoul National University Bundang Hospital
Samsung Medical Center
Konkuk University Medical Center
National Police Hospital
Seoul Veterans Hospital
hansol hospital
Kangdong Seoul Clinic
Jamsil Seoul Surgical Clinic
Song Do Colorectal Hospital
Yang Hospital
Daehang Hospital
Kangdong Sacred Heart Hospital
Information provided by (Responsible Party):
Suk-Kyun Yang, Asan Medical Center

Study Description
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Brief Summary:
The purpose of this study is to evaluate the incidence, prevalence, clinical characteristics and prognosis of Crohn's disease and ulcerative colitis over time in a district of Seoul, Korea.

Condition or disease
Crohn's Disease Ulcerative Colitis Epidemiology Korea

Detailed Description:
Inflammatory bowel disease (IBD), which is comprised of Crohn's disease (CD) and ulcerative colitis (UC) is a chronic inflammatory disease of gut with uncertain etiopathogenesis. According to our previous study (Yang, et al. Inflamm Bowel Dis 2008; 14: 542-549), the incidence and prevalence of IBD in Korea are still low compared with those in Western countries, but are rapidly increasing. However, the long-term trends of epidemiology of CD and UC together with their characteristics and prognosis in Korea are uncertain yet. The investigators therefore aim to elucidate the incidence and prevalence of CD and UC over a 30-year period, from 1986 to 2017, in the Songpa-Kangdong district of Seoul, Korea. In addition, the investigators also aim to reveal the clinical features at the time of diagnosis of IBD, long-term evolution of disease and prognosis.

Study Design
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Study Type : Observational
Estimated Enrollment : 2000 participants
Observational Model: Cohort
Official Title: Epidemiology of Inflammatory Bowel Disease in the Songpa-Kangdong District, Seoul, Korea.
Study Start Date : December 2012
Estimated Primary Completion Date : December 2017
Estimated Study Completion Date : June 2018

Resource links provided by the National Library of Medicine


Groups and Cohorts
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Group/Cohort
The Songpa-Kangdong cohort of IBD
Incident cases of IBD in the Songpa-Kangdong district, a well-defined administrative area in Seoul, the capital of Korea, beginning in 1986, when the first patient with IBD was diagnosed, until 2017. For the prevalent cases, the inhabitants with IBD at Dec 31, 2007 in the Songpa-Kangdong district are included.


Outcome Measures
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Primary Outcome Measures :
  1. Incidence rate and prevalence rate of IBD [ Time Frame: 1986-2017 (up to 31 years) ]
    1. Annual incidence rate of Crohn's disease and ulcerative colitis
    2. Prevalence rate of Crohn's disease and ulcerative colitis as of Dec 31, 2017.


Secondary Outcome Measures :
  1. Clinical features of patients with IBD [ Time Frame: 1986-2017 (up to 31 years) ]
    1. Clinical characteristics of patients newly diagnosed with Crohn's disease or ulcerative colitis: gender, presenting symptoms, duration between symptoms to diagnosis, and phenotypes, etc.
    2. Clinical course of patients newly diagnosed with Crohn's disease or ulcerative colitis: development of complications (strictures, perforations), intestinal resection rate, hospitalization rate, mortality, and pregnancies and their outcomes
    3. Treatment modalities of IBD and their trends: use of medication (5-ASA, corticosteroids, immunomodulators, and biologic agents, etc.)


Eligibility Criteria
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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
The study is performed in the Songpa-Kangdong district, a well-defined administrative area in Seoul, the capital of Korea, beginning in 1986, when the first patient with IBD was diagnosed, until 2017. The population of the study area was racially and ethnically homogeneous and was relatively stable in number.
Criteria

Inclusion Criteria:

  • Definite cases of CD and UC

Patients are diagnosed with CD if they meet at least 2 of the following criteria:

  1. clinical history of abdominal pain, weight loss, malaise, diarrhea, and/or rectal bleeding
  2. endoscopic findings of mucosal cobblestoning, linear ulceration, skip areas, or perianal disease
  3. radiologic findings of stricture, fistula, mucosal cobblestoning, or ulceration
  4. macroscopic appearance of bowel wall induration, mesenteric lymphadenopathy, and "creeping fat" at laparotomy
  5. pathologic findings of transmural inflammation and/or epithelioid granulomas

Only patients who meet these criteria for at least 2 months are included.

Patients are diagnosed with UC only if all 3 of the following criteria are present

  1. a typical history of diarrhea or blood and pus or both in the stool for longer than 4 weeks
  2. a typical sigmoidoscopic or colonoscopic picture with diffusely granular, friable, or ulcerated mucosa without rectal sparing or skip lesions or radiological signs of characteristic continuous granular or ulcerated mucosa
  3. characteristic histopathological signs of inflammation on biopsy

Exclusion Criteria:

  • IBD unclassified
  • Ethnic groups other than Korean
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01731665


Contacts
Contact: Suk-Kyun Yang, M.D. +82-2-3010-3901 sky@amc.seoul.kr
Contact: Byong Duk Ye, M.D. +82-2-3010-3181 bdye@amc.seoul.kr

Locations
Korea, Republic of
Asan Medical Center Recruiting
Seoul, Korea, Republic of, 138-736
Contact: Suk-Kyun Yang, M.D.    +82-2-3010-3901    sky@amc.seoul.kr   
Contact: Byong Duk Ye, M.D.    +82-2-3010-3181    bdye@amc.seoul.kr   
Principal Investigator: Suk-Kyun Yang, M.D.         
Sponsors and Collaborators
Asan Medical Center
Kyung Hee University Hospital at Gangdong
Seoul National University Hospital
Seoul National University Bundang Hospital
Samsung Medical Center
Konkuk University Medical Center
National Police Hospital
Seoul Veterans Hospital
hansol hospital
Kangdong Seoul Clinic
Jamsil Seoul Surgical Clinic
Song Do Colorectal Hospital
Yang Hospital
Daehang Hospital
Kangdong Sacred Heart Hospital
Investigators
Principal Investigator: Suk-Kyun Yang, M.D. Asan Medical Center
More Information
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Publications:

Responsible Party: Suk-Kyun Yang, Professor, Asan Medical Center
ClinicalTrials.gov Identifier: NCT01731665     History of Changes
Other Study ID Numbers: 2012-0634
First Posted: November 22, 2012    Key Record Dates
Last Update Posted: July 12, 2016
Last Verified: July 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Keywords provided by Suk-Kyun Yang, Asan Medical Center:
Crohn's disease
ulcerative colitis
epidemiology
Korea

Additional relevant MeSH terms:
Crohn Disease
Colitis
Ulcer
Colitis, Ulcerative
Intestinal Diseases
Inflammatory Bowel Diseases
 Gastroenteritis
Gastrointestinal Diseases
Digestive System Diseases
Colonic Diseases
Pathologic Processes