Prevalence of Latent Tuberculosis (TB) Infection Diagnosed by Interferon-gamma Release Assay and Tuberculin Skin Tests in Patients With Old Healed TB

This study has been completed.
Information provided by:
Seoul National University Hospital Identifier:
First received: April 4, 2010
Last updated: May 11, 2011
Last verified: May 2011
We easily regard nodules and fibrosis in upper lobes of lung as TB sequelae. The aim of this study is to confirm the prevalence of latent TB infection diagnosed by interferon-gamma release assay and tuberculin skin tests in patients with old healed TB.


Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by Seoul National University Hospital:

Primary Outcome Measures:
  • Prevalence of latent TB infection [ Time Frame: At enrollment ] [ Designated as safety issue: No ]

Estimated Enrollment: 480
Study Start Date: January 2010
Study Completion Date: March 2011
Primary Completion Date: January 2011 (Final data collection date for primary outcome measure)
Patients with TB sequelae
People without TB sequelae


Ages Eligible for Study:   20 Years to 80 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Patients with TB sequelae in their CXR

Inclusion Criteria:

  • Age > 20 years
  • Patients with TB sequelae in their CXR

Exclusion Criteria:

  • Patients on immune-suppressants
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Please refer to this study by its identifier: NCT01099098

Korea, Republic of
Seoul National University Hospital
Seoul, Korea, Republic of, 110-744
Sponsors and Collaborators
Seoul National University Hospital
  More Information

No publications provided

Responsible Party: Jae-Joon Yim / Associate Professor, Seoul National University Hospital Identifier: NCT01099098     History of Changes
Other Study ID Numbers: H-0909-054-295
Study First Received: April 4, 2010
Last Updated: May 11, 2011
Health Authority: South Korea: Korea Food and Drug Administration (KFDA)

Keywords provided by Seoul National University Hospital:
People who have fibrosis or nodules in their upper lobe of the lung

Additional relevant MeSH terms:
Actinomycetales Infections
Bacterial Infections
Gram-Positive Bacterial Infections
Mycobacterium Infections processed this record on December 01, 2015