Randomized Trial for Pharmacogenomics-based Tuberculosis Therapy (RT-PGTT)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00298870
Recruitment Status : Completed
First Posted : March 3, 2006
Last Update Posted : October 18, 2012
Information provided by:
Osaka University

March 2, 2006
March 3, 2006
October 18, 2012
June 2005
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The incidences of unfavorable events in two different treatment regimens based on the NAT2 gene polymorphism
1) the incidences of drug-induced liver injury associated with INH that occurred within 8 weeks of the treatments, and 2) the incidence of early treatment failure as indicated by a persistent positive culture or no improvement in chest radiographs at the 8th week
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Complete list of historical versions of study NCT00298870 on Archive Site
Other adversed events during the 8 weeks of the intensive phase of the anti-tuberculosis therapy
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Randomized Trial for Pharmacogenomics-based Tuberculosis Therapy (RT-PGTT)
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The purpose of this study is to elucidate whether the individualized medicine based on NAT2 gene polymorphism could improve the safety, efficacy and economical benefits of multi-drug therapy for the pulmonary tuberculosis with isoniazid.
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Phase 4
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Pulmonary Tuberculosis
  • Drug: Isoniazid
    Modified daily isoniazid dose : approx. 7.5 mg/kg, 5 mg/kg and 2.5 mg/kg for rapid, intermediate and slow acetylators, respectively
  • Drug: isoniazed
    Conventional standard daily isoniazid dose : approx. 5 mg/kg b.w. for all
  • Experimental: PGx-treatment
    NAT2 genotype-guided treatment with stratified isoniazid dose (approx. 7.5 mg/kg b.w., patients homozygous for NAT2*4: rapid acetylators; 5 mg/kg, patients heterozygous for NAT2*4: intermediate acetylators; 2.5 mg/kg, patientes without NAT2*4: slow acetylators)
    Intervention: Drug: Isoniazid
  • Active Comparator: STD-treatment
    Treatment with conventional standard isoniazid dose (approx. 5 mg/kg b.w.)
    Intervention: Drug: isoniazed
Azuma J, Ohno M, Kubota R, Yokota S, Nagai T, Tsuyuguchi K, Okuda Y, Takashima T, Kamimura S, Fujio Y, Kawase I; Pharmacogenetics-based tuberculosis therapy research group. NAT2 genotype guided regimen reduces isoniazid-induced liver injury and early treatment failure in the 6-month four-drug standard treatment of tuberculosis: a randomized controlled trial for pharmacogenetics-based therapy. Eur J Clin Pharmacol. 2013 May;69(5):1091-101. doi: 10.1007/s00228-012-1429-9. Epub 2012 Nov 14.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
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Inclusion Criteria:

  • Newly diagnosed pulmonary tuberculosis patients
  • Informed consent including pharmacogenomic analysis

Exclusion Criteria:

  • Abnormal liver and kidney function test before treatment
  • Long-term use of steroids and/or immunodepressants
  • Inadequate clinical conditions
Sexes Eligible for Study: All
20 Years to 75 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
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Osaka University
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Study Chair: Junichi Azuma, MD Graduate School of Pharmaceutical Sciences, Osaka University
Osaka University
May 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP