Journal
EXPERT REVIEW OF MOLECULAR DIAGNOSTICS
Volume -, Issue -, Pages -Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/14737159.2023.2240230
Keywords
Humoral response; IGRA; Mtb antigens; Mtb DNA; TBI diagnosis; TB progressors; Transcriptome; Tuberculosis; >
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Despite efforts, tuberculosis remains a major global health threat with a quarter of the world's population estimated to be infected by Mycobacterium tuberculosis (Mtb). Currently, there is no gold standard test for diagnosing tuberculosis infection (TBI) although new methodologies have been attempted.
IntroductionDespite huge efforts, tuberculosis (TB) is still a major public health threat worldwide, it is estimated that a quarter of the global population is infected by Mycobacterium tuberculosis (Mtb). For controlling TB and reducing Mtb transmission it is fundamental to diagnose TB infection (TBI) as well as the progressors from TBI to disease to identify those requiring preventive therapy. At present, there is no gold standard test for TBI diagnosis although several new methodologies have been attempted.Areas coveredThis review provides an update on the most recent approaches to develop reliable tests to diagnose TBI and progressors from infection to disease. Experimental tests are based on either the direct identification of Mtb (i.e., Mtb DNA upon host cells isolation; Mtb proteins or peptides) or host response (i.e., levels and quality of specific anti-Mtb antibodies; host blood transcriptome signatures).Expert opinionThe experimental tests described are very interesting. However, further investigation and randomized clinical trials are needed to improve the sensitivity and specificity of these new research-based tests. More reliable proofs-of-concept and simplification of technical procedures are necessary to develop new diagnostic tools for identifying TBI patients and those that will progress from infection to TB disease.
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