title: Diagnostic value of blood gene expression signatures in active tuberculosis in Thais: a pilot study.
abstract: Tuberculosis (TB) is a major global health problem. Routine laboratory tests or newly developed molecular detection are limited to the quality of sputum sample. Here we selected genes specific to TB by a minimum redundancy-maximum relevancy package using publicly available microarray data and determine level of selected genes in blood collected from a Thai TB cohort of 40 active TB patients, 38 healthy controls and 18 previous TB patients using quantitative real-time PCR. FCGR1A, FCGR1B variant 1, FCGR1B variant 2, APOL1, GBP5, PSTPIP2, STAT1, KCNJ15, MAFB and KAZN had significantly higher expression level in active TB individuals as compared with healthy controls and previous TB cases (P<0.01). A mathematical method was applied to calculate TB predictive score, which contains the level of expression of seven genes and this score can identify active TB cases with 82.5% sensitivity and 100% specificity as compared with conventional culture confirmation. In addition, TB predictive scores in active TB patients were reduced to normal after completion of standard short-course therapy, which was mostly in concordant with the disease outcome. These finding suggested that blood gene expression measurement and TB Sick Score could have potential value in terms of diagnosis of TB and anti-TB treatment monitoring.
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: N
authors.initials: N
authors.lastname: Satproedprai
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: N
authors.initials: N
authors.lastname: Wichukchinda
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Suphankong
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: W
authors.initials: W
authors.lastname: Inunchot
authors.affiliation: TB/HIV Research Foundation, Chiangrai, Thailand.
authors.forename: T
authors.initials: T
authors.lastname: Kuntima
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Kumpeerasart
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Wattanapokayakit
authors.affiliation: Department of Medical Services, Chiangrai Hospital, Chiangrai, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Nedsuwan
authors.affiliation: Department of Clinical Laboratory, Fukujuji Hospital, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yanai
authors.affiliation: 1] Japan Anti Tuberculosis Association, Research Institute of Tuberculosis, Tokyo, Japan [2] Research Institute of Immune Diagnosis, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Higuchi
authors.affiliation: 1] Japan Anti Tuberculosis Association, Research Institute of Tuberculosis, Tokyo, Japan [2] Research Institute of Immune Diagnosis, Tokyo, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Harada
authors.affiliation: Department of Medical Sciences, Medical Genetics Center, Medical Life Sciences Institute, Ministry of Public Health, Nonthaburi, Thailand.
authors.forename: S
authors.initials: S
authors.lastname: Mahasirimongkol
mesh_terms: D000328:Adult; D000368:Aged; D000995:Antitubercular Agents / Q000627:therapeutic use; D000075944:Apolipoprotein L1; D001053:Apolipoproteins / Q000097:blood / Q000235:genetics; D001798:Blood Proteins / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D020869:Gene Expression Profiling; D006801:Humans; D008075:Lipoproteins, HDL / Q000097:blood / Q000235:genetics; D051258:MafB Transcription Factor / Q000097:blood / Q000235:genetics; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D017452:Receptors, IgG / Q000097:blood / Q000235:genetics; D050794:STAT1 Transcription Factor / Q000097:blood / Q000235:genetics; D013785:Thailand; D014376:Tuberculosis / Q000097:blood / Q000175:diagnosis* / Q000188:drug therapy / Q000235:genetics*; D055815:Young Adult
chemical_list: C108666:APOL1 protein, human; D000995:Antitubercular Agents; D000075944:Apolipoprotein L1; D001053:Apolipoproteins; D001798:Blood Proteins; C489017:FCGR1A protein, human; D008075:Lipoproteins, HDL; C490407:MAFB protein, human; D051258:MafB Transcription Factor; D017452:Receptors, IgG; D050794:STAT1 Transcription Factor; C494079:STAT1 protein, human