Track topics on Twitter Track topics that are important to you
The purpose of this study is to evaluate the value of Quantiferon-TB Gold (QFT-G) assay in the screening for latent tuberculosis infection (LTBI) in rheumatologic patients due to start or on treatment with TNFα antagonists. The results of QFT-G will be compared to tuberculin skin testing (TST) and correlated to clinical and demographic data. The study hypothesis is that the inclusion of QTF-G in the screening strategy will allow a more accurate assessment of LTBI infection.
Treatment with TNFα antagonists is associated with an increased risk of active tuberculosis. Screening for LTBI and adherence to published guidelines have been shown to greatly decrease the risk of active tuberculosis. However, the best screening strategy is still object of debate. The validity of TST in patients on immunosuppressive treatment has been questioned. Recently, interferon-γ assays based on RD1-specific antigens have shown to cause less confounding by BCG vaccination and from most non-tuberculosis mycobacteria than TST, and have shown improved accuracy over TST in several settings. However, data on their use in rheumatologic patients are limited, and their superiority in patients on immunosuppressive treatment is unclear since indeterminate results may limit their clinical usefulness in this setting.
Purpose of the study is to investigate the added value of the inclusion of QTF-G assay in the screening strategy of LTBI in rheumatologic patients before and during treatment with TNFα antagonists.
The study will compare the results of TST with the results of QFT-G assay in rheumatologic patients being evaluated for treatment with anti-TNFα agents or already on treatment with anti-TNFα agents. The rate of positive and negative results of the two test will be compared, end results correlated to clinical and demographic variables.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
Quantiferon-TB Gold assay, Tuberculin skin test
Rheumatology Unit, Ospedale L. Sacco Polo Universitario
Ospedale L. Sacco – Polo Universitario
Published on BioPortfolio: 2014-07-23T21:29:01-0400
The purpose of the study is to estimate the usefulness of the QuantiFERON®-TB Gold test for the diagnosis of latent tuberculosis infection in liver transplant candidates by correlating th...
This research will help doctors interested in the usefulness of a new test to discover hidden tuberculosis infections in patients diagnosed with rheumatoid arthritis (RA). This new test i...
Until recently, the tuberculin skin test (TST) was the only available diagnostic assay for detection of latent infection with M. tuberculosis (LTBI). Despite the low overall incidence of s...
The accuracy of tuberculin skin test (TST) for detecting latent tuberculosis is limited in countries with a high proportion of population having received vaccination with the BCG. We aim t...
The ministry of health in Israel requires all health-care workers to undergo screening for latent Tuberculosis infection (LTBI) prior to starting work. This is based on the Mantoux skin te...
To characterize the cascade of care for latent tuberculosis infection (LTBI) in persons experiencing homelessness (PEH) and evaluate the effect of screening by QuantiFERON-TB Gold (QFT) versus tubercu...
QuantiFERON Gold Plus (Plus) assay has two approved methods for blood collection: direct in-tube (Plus direct) or the transfer of blood from a lithium heparin tube (Plus transfer). Currently, there is...
Although QuantiFERON-TB Gold Plus (QFT-Plus), a new interferon-gamma release assay, has shown good performance in adults, little data is available in children.
To compare tuberculin skin test (TST) and interferon gamma release assay (IGRA) in the screening of LTBI among patients with inflammatory bowel disease (IBD) in an endemic area for tuberculosis, to ev...
To evaluate the performance of QuantiFERON-TB Gold Plus (QFT-Plus) on Mycobacterium tuberculosis (MTB) infection test among registered village doctors from China.
A variable mixture of the mono- and disodium salts of gold thiomalic acid used mainly for its anti-inflammatory action in the treatment of rheumatoid arthritis. It is most effective in active progressive rheumatoid arthritis and of little or no value in the presence of extensive deformities or in the treatment of other forms of arthritis.
A protein extracted from boiled culture of tubercle bacilli (MYCOBACTERIUM TUBERCULOSIS). It is used in the tuberculin skin test (TUBERCULIN TEST) for the diagnosis of tuberculosis infection in asymptomatic persons.
One of several skin tests to determine past or present tuberculosis infection. A purified protein derivative of the tubercle bacilli, called tuberculin, is introduced into the skin by scratch, puncture, or interdermal injection.
Arthritis in children, with onset before 16 years of age. The terms juvenile rheumatoid arthritis (JRA) and juvenile idiopathic arthritis (JIA) refer to classification systems for chronic arthritis in children. Only one subtype of juvenile arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.
Rheumatoid arthritis of children occurring in three major subtypes defined by the symptoms present during the first six months following onset: systemic-onset (Still's Disease, Juvenile-Onset), polyarticular-onset, and pauciarticular-onset. Adult-onset cases of Still's disease (STILL'S DISEASE, ADULT-ONSET) are also known. Only one subtype of juvenile rheumatoid arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.
An assay is an analytic procedure for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity. This can be a drug or biochemical substance or a cell in an organism or organic sample. ...
Antiretroviral Therapy Clostridium Difficile Ebola HIV & AIDS Infectious Diseases Influenza Malaria Measles Sepsis Swine Flu Tropical Medicine Tuberculosis Infectious diseases are caused by pathogenic...
Cytokine Tumour Necrosis Factor (TNF)
TNF is a compound that is classified as a cytokine which plays a central role in the cellular mechanisms of apoptosis or cell death. However, there are a number of different kinds of TNF, just under twenty, but the family of molecules have very similar a...