ArticleRheumatology international2023
Do the drug doses of conventional synthetic DMARDs used for the treatment of biologic/targeted-synthetic DMARDs naive rheumatoid arthritis patients affect QuantiFERON-TB Gold Plus test results?
Article in Rheumatology international, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors at 1 institution in 1 country.
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Abstract
We aimed to obtain the effects of immunosuppressive doses on the QuantiFERON-TB Gold Plus (QFT-Plus) test results in Rheumatoid Arthritis (RA) patients. Besides this, the impact of the TB2 tube in QFT-Plus test was also investigated. This study included RA patients registered to HURBIO and were screened via QFT-Plus test for latent tuberculosis between January 2018 and March 2021, before the initiation of treatment of biologic/targeted-synthetic disease modifying anti-rheumatismal drugs (b/ts-DMARDs). Patients using methotrexate ≥ 10 mg or leflunomide (any dose) or steroids (≥ 7.5 mg prednisolone) at the time of QFT-Plus test were classified as the "high dose" group and the rest of the patients constituted the "low dose" group. The study included 534 RA patients; 353 [66.1%] in the high-dose group and 181 [33.9%] in the low-dose group. While QFT-Plus test was positive in 10.5% (37/353) patients in the high-dose group, it was positive in 20.4% (37/181) patients in the low-dose group (p < 0.001). The percentage of QFT-Plus indeterminate results were similar (around 2%) in both groups. The contribution of the TB2 tube to QFT-Plus test positivity was 6.89%. During a median (inter-quartile range) follow-up period of 23 (7-38) months under treatment of b/ts-DMARDs, latent TB reactivation was not observed. Primer active tuberculosis disease developed in two patients. Positive test results of Interferon-Gamma Release Assays (IGRAs) could decrease as immunosuppressive treatment doses increase in patients with RA and addition of the TB2 tube could increase test sensitivity.
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