J Rheum Dis 2015; 22(4): 223-230
Published online August 30, 2015
© Korean College of Rheumatology
성윤경ㆍ조수경ㆍ원소영ㆍ최찬범ㆍ김태환ㆍ전재범ㆍ유대현ㆍ배상철
한양대학교 류마티스병원 류마티스내과
Correspondence to : Sang-Cheol Bae
Objective. To compare the incidence of tuberculosis (TB) in rheumatoid arthritis (RA) patients using tumor necrosis factor (TNF) inhibitors following two strategies for latent tuberculosis infection (LTBI) screening: Tuberculin skin test (TST) only vs. TST plus Qauntiferron-TB gold in tube (QFT-GIT). Methods. Data was extracted from a retrospective cohort of Korean RA patients who used biologic agents. Of the 406 RA patients who underwent TST before starting TNF inhibitor, we selected 355 patients who strictly followed LTBI screening and treatment strategies. Two hundred and twenty-two patients were classified as TST only group and the remaining 133 patients as TST plus QFT-GIT group. We calculated the standardized incidence ratio of TB in the entire sample and compared the TB incidence between groups. Results. Among the patients who received the TST only strategy (n=222, 538.6 person-year [PY]), two patients developed TB during anti-TNF therapy, while of those who followed the TST plus QFT-GIT strategy, none developed TB (n=133, 108.8 PY). The overall crude incidence of TB in RA patients using TNF inhibitors was 314 per 100,000 PY. Compared with the general population, the overall age standardized incidence of TB in TNF inhibitor users who followed management guideline for LTBI was 3.9. Conclusion. Despite following screening and management guidelines for LTBI, TB incidence for RA patients during anti-TNF therapy is higher than in the general population. Combining QFT-GIT with TST as a screening for LTBI might be reduce the risk of TB. (J Rheum Dis 2015;22:223- 230)
Keywords Rheumatoid arthritis, Tuberculosis, Latent tuberculosis, Tumor necrosis factor inhibitor
J Rheum Dis 2015; 22(4): 223-230
Published online August 30, 2015
Copyright © Korean College of Rheumatology.
성윤경ㆍ조수경ㆍ원소영ㆍ최찬범ㆍ김태환ㆍ전재범ㆍ유대현ㆍ배상철
한양대학교 류마티스병원 류마티스내과
Yoon-Kyoung Sung, Soo-Kyung Cho, Soyoung Won, Chan-Bum Choi, Tae-Hwan Kim, Jae-Bum Jun, Dae-Hyun Yoo, Sang-Cheol Bae
Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
Correspondence to:Sang-Cheol Bae
Objective. To compare the incidence of tuberculosis (TB) in rheumatoid arthritis (RA) patients using tumor necrosis factor (TNF) inhibitors following two strategies for latent tuberculosis infection (LTBI) screening: Tuberculin skin test (TST) only vs. TST plus Qauntiferron-TB gold in tube (QFT-GIT). Methods. Data was extracted from a retrospective cohort of Korean RA patients who used biologic agents. Of the 406 RA patients who underwent TST before starting TNF inhibitor, we selected 355 patients who strictly followed LTBI screening and treatment strategies. Two hundred and twenty-two patients were classified as TST only group and the remaining 133 patients as TST plus QFT-GIT group. We calculated the standardized incidence ratio of TB in the entire sample and compared the TB incidence between groups. Results. Among the patients who received the TST only strategy (n=222, 538.6 person-year [PY]), two patients developed TB during anti-TNF therapy, while of those who followed the TST plus QFT-GIT strategy, none developed TB (n=133, 108.8 PY). The overall crude incidence of TB in RA patients using TNF inhibitors was 314 per 100,000 PY. Compared with the general population, the overall age standardized incidence of TB in TNF inhibitor users who followed management guideline for LTBI was 3.9. Conclusion. Despite following screening and management guidelines for LTBI, TB incidence for RA patients during anti-TNF therapy is higher than in the general population. Combining QFT-GIT with TST as a screening for LTBI might be reduce the risk of TB. (J Rheum Dis 2015;22:223- 230)
Keywords: Rheumatoid arthritis, Tuberculosis, Latent tuberculosis, Tumor necrosis factor inhibitor
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