A Study on Changes in IFN-gamma Levels Following Anti-TNF Treatment in Patients Undergoing Serial QuantiFERON-TB Gold In-Tube
|ClinicalTrials.gov Identifier: NCT01475409|
Recruitment Status : Completed
First Posted : November 21, 2011
Last Update Posted : November 21, 2011
University of Roma La Sapienza
Information provided by (Responsible Party):
Rossana Scrivo, University of Roma La Sapienza
The screening for latent tuberculosis infection (LTBI) prior to the onset of anti-tumor necrosis factor therapy, as well as a watchful monitoring during the treatment, is strongly recommended. Tuberculin skin test (TST), universally used for this purpose, lacks sensitivity and specificity. The novel screening tools, including QuantiFERON-TB Gold In-Tube (QFT-GIT), have shown a higher specificity compared to TST, but their feasibility in the setting of immunosuppression remains unclear. Aims of this study were to investigate the performance of QFT-GIT and its agreement with TST in patients awaiting anti-tumor necrosis factor (TNF) therapy, and to evaluate the usefulness of serial QFT-GIT during the treatment with biologics to assess whether dynamic changes in interferon (IFN)-gamma levels may be helpful in identifying reactivation of LTBI or cases of newly acquired tuberculosis.
|Condition or disease||Intervention/treatment|
|Inflammatory Rheumatic Diseases||Biological: QuantiFERON-TB Gold In-Tube (QFT-GIT)|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||119 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Dynamic Changes in IFN-gamma Plasma Levels Following Anti-TNF Treatment in Patients With Inflammatory Rheumatic Diseases Undergoing Serial QuantiFERON-TB Gold In-Tube Testing: a Prospective Study in a Low Tuberculosis Burden Country|
|Study Start Date :||July 2008|
|Primary Completion Date :||February 2010|
|Study Completion Date :||February 2011|
Experimental: QuantiFERON-TB Gold In-Tube (QFT-GIT)
Patients were randomized to undergo, on the same day, tuberculin skin test (TST) and QFT-GIT by means of a randomization list to generate the order by which the 2 tests had to be executed. QFT-GIT was repeated after 3 and 6 months since TNF antagonist onset.
Biological: QuantiFERON-TB Gold In-Tube (QFT-GIT)
Patients were randomized to undergo, on the same day, TST and QFT-GIT by means of a randomization list to generate the order by which the 2 tests had to be executed. QFT-GIT was repeated after 3 and 6 months since TNF antagonist onset
Primary Outcome Measures :
- Change from baseline in IFN-gamma plasma levels following serial QFT-GIT testing during the treatment with anti-TNF agents [ Time Frame: From date of randomization (before anti-TNF treatment) until the date of repeated QFT-GIT testing (after 12 weeks and again after 24 weeks) for a total assessment of 7 months. ]QFT-GIT was performed at randomization (before commencement of anti-TNF treatment) and after 3 and 6 months since the beginning of biologicals.
Secondary Outcome Measures :
- Performance of QFT-GIT and its agreement with TST in patients under consideration for anti-TNF agents [ Time Frame: From date of randomization (before anti-TNF treatment) until the date of acquisition of QFT-GIT and TST results, for a total of 1 month. ]QFT-GIT and TST were performed at baseline, before the commencement of anti-TNF treatment.
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