Clinical trial NCT00541294: Diagnosis of Tuberculosis Infection in HIV Co-infected Children
Official title: Diagnosis of Tuberculosis Infection in HIV Co-infected Children
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Latent Tuberculosis Infection
Tuberculosis
HIV Infections
Keywords: Tuberculosis
HIV
Diagnostics
Pediatrics
Lead sponsor: Case Western Reserve University
Sponsor class: OTHER
Collaborators: name: Thrasher Research Fund
First posted: 2007-10-10
Enrollment: 250
Sex: ALL
Minimum age (years): 3
Maximum age (years): 15
Standard ages: CHILD
Accepts healthy volunteers: no
Observational model: OTHER
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: HIV seropositive and seronegative South African children (6months to 15years) with and without M.tb exposure

Brief summary: Background: The TB and HIV epidemics are closely linked in developing countries, where 450,000 children die from HIV annually. TB is a major cause of death in HIV-infected children and is reversing gains made in child survival.

The traditional tuberculin skin test (TST) has limited diagnostic accuracy for detecting TB infection. Adult studies suggest that new blood-based diagnostic TB testing offers a quicker, more accurate way to diagnose TB infection. Such diagnostic testing may directly guide clinical management and preventive strategies in immune-suppressed HIV-infected children, who are at high risk of becoming TB diseased following infection. Data regarding the usefulness of these tests in children is currently limited.

Objective(s) and Hypothesis(es): The investigators hypothesize that blood-based TB diagnostic testing can accurately identify children with TB infection. In a community with high rates of TB and HIV infection, the following specific aims will be investigated in HIV-infected and uninfected children:

1. assess the agreement between the TST and blood-based diagnostic testing,
2. compare the performance of the TST and blood-based diagnostic testing to a standardized history of TB exposure,
3. measure the impact of age, nutritional and immune status on children's response to blood-based testing,
4. describe factors that might modify children's response to testing over time, and 5) examine the effect of environmental exposures and previous vaccination on the TST, blood-based testing and other measures of immune responses to TB.

Potential Impact: The benefits of an accurate, rapid diagnostic test of TB infection in children include 1) timely institution of treatment for TB infection to prevent severe disease and mortality, and 2) preclusion of over diagnosis and treatment. Treatment of childhood TB infection also prevents future contagious adult disease, thus decreasing community transmission. Blood-based diagnostic testing may also be able to identify children that are more likely to become ill following TB infection. Therefore, blood-based diagnostic testing has great potential to improve TB control and the health of HIV-infected and uninfected children, their households and communities.


Eligibility criteria: Inclusion Criteria:

* age less than 15 years
* completion of informed consent

Exclusion Criteria:

* less than 3 months of age
* documented anemia
* recent diagnosis of tuberculosis
* receiving treatment for tuberculosis

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Tygerberg
country: South Africa
facility: Despond TuTu TB Centre, Stellenbosch University
state: Western Cape
Study officials:
affiliation: Baylor College of Medicine
name: Anna M Mandalakas, MD, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: University of Stellenbosch
name: Anneke C Hesseling, MD, MS
role: PRINCIPAL_INVESTIGATOR
References: