PMID- 19861018 OWN - NLM STAT- MEDLINE DCOM- 20100107 LR - 20161125 IS - 1815-7920 (Electronic) IS - 1027-3719 (Linking) VI - 13 IP - 11 DP - 2009 Nov TI - QuantiFERON-TB Gold in the identification of latent tuberculosis infection in rheumatoid arthritis: a pilot study. PG - 1427-32 AB - OBJECTIVE: To compare the performance of QuantiFERON-TB Gold (QFT-G) with that of the tuberculin skin test (TST) in detecting latent tuberculosis (LTBI) among patients with rheumatoid arthritis (RA). PATIENTS AND METHODS: A total of 35 RA patients and 15 healthy controls underwent TST, QFT-G assays and chest X-ray and filled out a questionnaire on predisposing conditions for TB disease. Serum interferon gamma (IFN-gamma) levels were tested by an enzyme-linked immunosorbent assay. RESULTS: Forty-five per cent of RA patients had a TST > 5 mm vs. 26% in healthy controls. In the RA patients, QFT-G was positive in 11.4%, negative in 60% and indeterminate in 28.6%. The overall agreement between TST and QFT-G was significantly lower in the RA population than in controls (56% vs. 84%). No correlation was found between the use of prednisone, methotrexate and QFT-G results or agreement between TST and QFT-G. A low IFN-gamma level (<4 pg/ml) was found in 51.5% of the RA patients. No correlation was found between serum IFN-gamma levels and QFT-G results. CONCLUSION: The clinical significance of negative QFT-G in TST-positive patients with low TB risk remains to be assessed. The high rate of indeterminate results questions the clinical utility of QFT-G in the diagnosis of LTBI in RA patients. FAU - Shovman, O AU - Shovman O AD - Department of Rheumatology, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Anouk, M AU - Anouk M FAU - Vinnitsky, N AU - Vinnitsky N FAU - Arad, U AU - Arad U FAU - Paran, D AU - Paran D FAU - Litinsky, I AU - Litinsky I FAU - Caspi, D AU - Caspi D FAU - Elkayam, O AU - Elkayam O LA - eng PT - Comparative Study PT - Journal Article PL - France TA - Int J Tuberc Lung Dis JT - The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease JID - 9706389 RN - 0 (Antirheumatic Agents) RN - 0 (Biomarkers) RN - 0 (Reagent Kits, Diagnostic) RN - 82115-62-6 (Interferon-gamma) RN - VB0R961HZT (Prednisone) RN - YL5FZ2Y5U1 (Methotrexate) SB - IM MH - Antirheumatic Agents/therapeutic use MH - Arthritis, Rheumatoid/*complications/drug therapy MH - Biomarkers/blood MH - Case-Control Studies MH - *Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Interferon-gamma/*blood MH - Latent Tuberculosis/*diagnosis/diagnostic imaging/microbiology MH - Male MH - Methotrexate/therapeutic use MH - Middle Aged MH - Mycobacterium/*immunology MH - Pilot Projects MH - Predictive Value of Tests MH - Prednisone/therapeutic use MH - Radiography MH - *Reagent Kits, Diagnostic MH - Surveys and Questionnaires MH - *Tuberculin Test EDAT- 2009/10/29 06:00 MHDA- 2010/01/08 06:00 CRDT- 2009/10/29 06:00 PHST- 2009/10/29 06:00 [entrez] PHST- 2009/10/29 06:00 [pubmed] PHST- 2010/01/08 06:00 [medline] PST - ppublish SO - Int J Tuberc Lung Dis. 2009 Nov;13(11):1427-32.