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RECRUITING
NCT06796647

ESAT6/CFP10 Skin Testing for TB Infection in Rheumatologic Patients

Sponsor: Chinese University of Hong Kong

View on ClinicalTrials.gov

Summary

The aim of the study is to pilot the application of a novel ESAT6/CFP10 (C-TST) skin test in rheumatologic disease patients prior to initiation of treatment with biologic and/or targeted synthetic disease-modifying antirheumatic drugs (b/tsDMARD). This is a prospective observational study involving the recruitment of patients with rheumatologic diseases who are planned for initiation of b/tsDMARD. Eligible patients would undergo skin testing by the Mantoux technique with purified protein derivative (PPD) RT23 on one forearm and C-TST on the other, alongside routine blood sampling for Interferon-Gamma Release Assay. The skin test results would be read within 48-72 hours afterwards. Treatment of TB infection would be provided in accordance with current clinical guidelines, followed by regular clinical monitoring for 2 years. Analyses involve performance evaluation of C-TST, and decision-analytical modelling incorporating multiple Markov process to evaluate the impact of management by LTBI testing methods on clinical outcomes and health care costs.

Official title: The Use of a Novel ESAT6/CFP10 Skin Test in Diagnosis of Latent Tuberculosis Infection Among Rheumatologic Patients

Key Details

Gender

All

Age Range

18 Years - 65 Years

Study Type

OBSERVATIONAL

Enrollment

100

Start Date

2025-03-19

Completion Date

2028-08

Last Updated

2025-09-10

Healthy Volunteers

No

Interventions

DIAGNOSTIC_TEST

ESAT6/CFP10 skin test

Each recruited participant would be offered standard tuberculin skin test (TST) and ESAT6/CFP10 (C-TST) skin test on the same day or setting of clinical visit. TST and C-TST would be performed by the Mantoux technique with intradermal injection of 2U purified protein derivative-RT23 on one forearm and 5U (1.0µg/0.1 ml) of recombinant fusion protein ESAT6-CFP10 on the other forearm respectively.

Locations (2)

S.H. Ho Research Centre for Infectious Diseases

Hong Kong, Hong Kong, China

S.H. Ho Research Centre for Infectious Diseases

Shatin, Hong Kong, Hong Kong