Gene Expression in HIV and Tuberculosis Co-infection
|First Submitted Date||June 1, 2012|
|First Posted Date||June 5, 2012|
|Last Update Posted Date||July 2, 2017|
|Start Date||May 29, 2012|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures
||Identify blood mRNA expression profiles distinguishing TB onoinfectedfrom TB/HIV co-infected patients (ART-naive and ART-treated with and without TB-IRIS). [ Time Frame: During data analysis phase ]|
|Original Primary Outcome Measures||Not Provided|
|Change History||Complete list of historical versions of study NCT01611402 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures
|Original Secondary Outcome Measures||Not Provided|
|Current Other Outcome Measures||Not Provided|
|Original Other Outcome Measures||Not Provided|
|Brief Title||Gene Expression in HIV and Tuberculosis Co-infection|
|Official Title||Transcriptional Signature of HIV And TB Co-Infection|
- Tuberculosis (TB) infection is particularly deadly when it happens in people who are also infected with the human immunodeficiency virus (HIV). However, not much is known about how these two infections affect each other. Some people who have HIV or TB infections develop health problems after they start taking either HIV or TB medications or both. These drugs can improve the body s ability to fight infections, but sometimes this sudden improvement can make the infected person initially become sicker. Researchers want to study how these infections affect the immune system and the gene expression of people who have TB and may or may not have HIV, to see if there is a pattern of gene expression that may predict whether people starting treatment may get sicker initially.
- To study the gene expression and immune systems of people with TB who may or may not also have HIV.
Tuberculosis (TB) remains one of the deadliest infections throughout the world, particularly in the setting of HIV infection. In China, TB is a frequently diagnosed complication of HIV infection. The immunopathogenesis of TB remains unclear, and although it is known that HIV infection increases the risk of developing active TB, either through infection or reactivation of latent disease, how it does so has yet to be determined. It is also known that patients co-infected with HIV and TB and na(SqrRoot) ve to antiretroviral therapy (ART) have a particularly high risk of developing Immune Reconstitution Inflammatory Syndrome (IRIS) after ART therapy is initiated, but the immunopathogenesis of this reaction is also unclear.
The use of genomics has significantly improved the understanding of disease pathogenesis and is increasingly being used to predict responses to therapy as well. Recently, blood transcriptional signatures capable of distinguishing active and latent TB infection have been identified using highly parallelized analytical platforms capable of simultaneous survey of transcription of known genes. These signatures have hinted at a complex role for type I interferons in the development of active TB infection, but this has not yet been studied in people with HIV and TB co-infection. Further in depth studies are needed to characterize the spectrum of responses to TB/HIV co-infection, and how these responses correlate with clinical data.
We propose a cross-sectional cohort study, to be conducted in both the US and in China, to identify blood mRNA expression profiles distinguishing TB mono-infected and TB/HIV co-infected ART-na(SqrRoot) ve patients from treated patients with and without TB-IRIS. Secondary objectives will include correlating gene expression levels with clinical outcomes and soluble biomarkers. The study will comprise a test set (in China) of up to 140 patients divided among the different cohorts and a validation set (in the US) of up to 125 patients divided among the three groups Participation will involve a single study visit to consist of small volume phlebotomy (approximately 25 mL for safety labs, transcriptome analysis, lymphocyte counts, and serum and plasma storage) a urine sample and information gleaned from the clinical record entered into a coded Case Report Form (CRF). The U.S. cohort will have an additional 40 mLs of blood collected for mononuclear cells (total of approximately 65mLs).The study will exclude women who are pregnant or breast-feeding (which can be associated with immune compromise and changes in markers associated with inflammation), and persons with anemia (who may be unable to tolerate phlebotomy solely for research purposes).
|Study Design||Observational Model: Cohort
Time Perspective: Cross-Sectional
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Not Provided|
|Study Population||Not Provided|
|Study Groups/Cohorts||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Estimated Completion Date||April 6, 2016|
|Primary Completion Date||Not Provided|
For all patients:
If the TB diagnosis cannot be confirmed as above (i.e. culture positive for NTM), the patient will be excluded from final analysis.
Patients in TB mono-infected arm (Group A) would additionally be eligible if:
Patients in TB/HIV co-infected arm (Group B) would additionally be eligible if:
Patients in TB/HIV co-infected, treated arm (Group C) would additionally be eligible if:
Pregnancy or post-partum period (6 months post-partum or while breast-feeding, whichever is longer).
Documented history of hemoglobin from most recent blood draw less than 7g/dL.
|Ages||18 Years and older (Adult, Senior)|
|Accepts Healthy Volunteers||No|
|Contacts||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries||United States|
|Removed Location Countries||China|
|Other Study ID Numbers||120142
|Has Data Monitoring Committee||Not Provided|
|U.S. FDA-regulated Product||Not Provided|
|IPD Sharing Statement||Not Provided|
|Responsible Party||National Institutes of Health Clinical Center (CC) ( National Institute of Allergy and Infectious Diseases (NIAID) )|
|Study Sponsor||National Institute of Allergy and Infectious Diseases (NIAID)|
|PRS Account||National Institutes of Health Clinical Center (CC)|
|Verification Date||April 6, 2016|