{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T22:07:12Z","timestamp":1775254032492,"version":"3.50.1"},"reference-count":30,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2021,2,19]],"date-time":"2021-02-19T00:00:00Z","timestamp":1613692800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"name":"Department of Biotechnology, Government of India","award":["BT\/PR27952\/INF\/22\/212\/2018"],"award-info":[{"award-number":["BT\/PR27952\/INF\/22\/212\/2018"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,9,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Early and accurate diagnosis followed by timely treatment are the key prerequisites to fight tuberculosis (TB) and reduce its global burden. Despite scientific advances, the rapid and correct diagnosis of both pulmonary and extrapulmonary tuberculosis remains a challenge because of traditional reliance on detection of the elusive bacilli. Mycobacterium tuberculosis (Mtb)-specific host immune activation and cytokine production have shown significant promise as alternative means of detecting and distinguishing active disease from latent infection. We queried the diagnostic ability of phenotypic markers on Mtb-specific cytokine-producing immune cell subsets for identifying active TB.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Subjects belonging to the following groups were recruited: pulmonary and extrapulmonary TB, latent TB, cured TB, sick controls, and healthy controls. Polychromatic flow cytometry was used to identify host immune biomarkers in an exploratory cohort comprising 56 subjects using peripheral blood mononuclear cells. Clinical performance of the identified biomarker was evaluated using whole blood in a blinded validation cohort comprising 165 individuals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Cytokine secreting frequencies of Mtb-specific cluster of differentiation 4-positive (CD4+) T cells with CD38+CD27\u2013 phenotype clearly distinguished infected individuals with active tuberculosis from those without disease. Tumor necrosis factor-\u03b1 (TNF-\u03b1) secretion from CD38+CD27\u2013CD4+ T cells upon stimulation with ESAT6\/CFP10 peptides had the best diagnostic accuracy at a cutoff of 9.91% (exploratory: 96.67% specificity, 88.46% sensitivity; validation: 96.15% specificity, 90.16% sensitivity). Additionally, this subset differentiated treatment-naive patients with TB from individuals cured of TB following completion of anti-TB therapy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Mtb-specific CD38+CD27\u2013TNF-\u03b1\u200a+CD4+ T-cell subset is a robust biomarker both for diagnosing TB and assessing cure.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/cid\/ciab144","type":"journal-article","created":{"date-parts":[[2021,2,13]],"date-time":"2021-02-13T15:38:52Z","timestamp":1613230732000},"page":"793-801","source":"Crossref","is-referenced-by-count":31,"title":["CD38+CD27\u2013TNF-\u03b1\u200a+ on\n                    <i>Mtb<\/i>\n                    -specific CD4+ T Cells Is a Robust Biomarker for Tuberculosis Diagnosis"],"prefix":"10.1093","volume":"73","author":[{"given":"Muthya Pragun","family":"Acharya","sequence":"first","affiliation":[{"name":"Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sai Pallavi","family":"Pradeep","sequence":"additional","affiliation":[{"name":"Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Venkataramappa Srinivasa","family":"Murthy","sequence":"additional","affiliation":[{"name":"Department of Pathology, Employees State Insurance Corporation Medical College & Post Graduate Institute of Medical Sciences & Research (ESIC MC & PGIMSR), Bengaluru, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Panduranga","family":"Chikkannaiah","sequence":"additional","affiliation":[{"name":"Department of Pathology, Employees State Insurance Corporation Medical College & Post Graduate Institute of Medical Sciences 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