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JOURNAL ARTICLE
OBSERVATIONAL STUDY
Tuberculosis screening prior to anti-tumor necrosis factor therapy among patients with immune-mediated inflammatory diseases in Japan: a longitudinal study using a large-scale health insurance claims database.
International Journal of Rheumatic Diseases 2017 November
AIM: Tuberculosis screening is recommended for patients with immune-mediated inflammatory diseases (IMIDs) prior to anti-tumor necrosis factor (TNF) therapy. However, adherence to the recommended practice is unknown in the current clinical setting in Japan.
METHODS: We used a large-scale health insurance claims database in Japan to conduct a longitudinal observational study. Of more than two million beneficiaries in the database between 2013 and 2014, we enrolled those with IMIDs aged 15-69 years who had initiated anti-TNF therapy. We defined tuberculosis screening primarily as tuberculin skin test and/or interferon-gamma release assay (TST/IGRA) within 2 months before commencing anti-TNF therapy. We analyzed the proportions of the patients who had undergone tuberculosis screening and the associations with primary disease, type of anti-TNF agent, methotrexate prescription prior to anti-TNF therapy, and treatment for latent tuberculosis infection (LTBI).
RESULTS: Of 385 patients presumed to have initiated anti-TNF therapy, 252 (66%) had undergone tuberculosis screening by TST/IGRA (22% TST, 56% IGRA, and 12% both TST and IGRA), and 231 (60%) had undergone TST/IGRA and radiography. Patients with psoriasis tended to be more likely to undergo tuberculosis screening than those with other diseases; however, this association was not statistically significant. Treatment for LTBI was provided to 43 (11%) patients; 123 (32%) received neither TST/IGRA nor LTBI treatment.
CONCLUSIONS: Tuberculosis screening was often not performed prior to anti-TNF therapy despite the guidelines' recommendations; thus, patients could be put at unnecessary risk of reactivation of tuberculosis.
METHODS: We used a large-scale health insurance claims database in Japan to conduct a longitudinal observational study. Of more than two million beneficiaries in the database between 2013 and 2014, we enrolled those with IMIDs aged 15-69 years who had initiated anti-TNF therapy. We defined tuberculosis screening primarily as tuberculin skin test and/or interferon-gamma release assay (TST/IGRA) within 2 months before commencing anti-TNF therapy. We analyzed the proportions of the patients who had undergone tuberculosis screening and the associations with primary disease, type of anti-TNF agent, methotrexate prescription prior to anti-TNF therapy, and treatment for latent tuberculosis infection (LTBI).
RESULTS: Of 385 patients presumed to have initiated anti-TNF therapy, 252 (66%) had undergone tuberculosis screening by TST/IGRA (22% TST, 56% IGRA, and 12% both TST and IGRA), and 231 (60%) had undergone TST/IGRA and radiography. Patients with psoriasis tended to be more likely to undergo tuberculosis screening than those with other diseases; however, this association was not statistically significant. Treatment for LTBI was provided to 43 (11%) patients; 123 (32%) received neither TST/IGRA nor LTBI treatment.
CONCLUSIONS: Tuberculosis screening was often not performed prior to anti-TNF therapy despite the guidelines' recommendations; thus, patients could be put at unnecessary risk of reactivation of tuberculosis.
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