Prognostic Value of Interferon Gamma Release Assays in Predicting Active Tuberculosis Among Individuals With, or at Risk of, Latent Tuberculosis Infection (PREDICT)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified July 2010 by Health Protection Agency, United Kingdom.
Recruitment status was  Not yet recruiting
Sponsor:
Collaborators:
Imperial College London
Queen Mary University of London
University College, London
Brunel University
University of Birmingham
Information provided by:
Health Protection Agency, United Kingdom
ClinicalTrials.gov Identifier:
NCT01162265
First received: July 12, 2010
Last updated: July 13, 2010
Last verified: July 2010
  Purpose

The objective of this study is to assess the efficacy of the two current TB (tuberculosis) blood tests (Interferon Gamma Release Assays (IGRA)) compared with the standard skin test (Mantoux Tuberculin Skin Test (TST)), for predicting active tuberculosis among those at increased risk of TB. Those at increased risk are defined as either newly arrived immigrants or people who have been in contact with TB cases. The study will also provide information on the cost effectiveness of different testing strategies, such as the two step testing approach recommended by NICE. The study is to be funded by the NIHR Health Technology Assessment programme.

10,000 participants will be recruited from 12 hospitals and a network of GP surgeries in London. All participants will have the skin test and blood taken for both assays. Disease status of participants will then be followed up for an average of 24 months using the national register of clinical reports, a phone call and the national microbiological database. The risk of developing active disease is highest in the first two years after exposure. During followup there will be no additional diagnostic procedures unless symptoms occur, i.e. in line with current NICE policy. A sub group of patients, selected as a random 25% of participants, will have a repeat IGRA test shortly after the first test to investigate whether the skin test affects the result of the blood test.


Condition
Tuberculsosis
IGRA

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Prognostic Value of Interferon Gamma Release Assays in Predicting Active Tuberculosis Among Individuals With, or at Risk of, Latent Tuberculosis Infection

Resource links provided by NLM:


Further study details as provided by Health Protection Agency, United Kingdom:

Primary Outcome Measures:
  • Development of active TB. Prognostic values of tests quantified as incidence rate ratios (RR) among contacts and new entrants [ Time Frame: two years ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Side effects from chemoprophylaxis [ Time Frame: two years ] [ Designated as safety issue: Yes ]

Biospecimen Retention:   Samples With DNA

A biobank will be established from samples collected in this study, subject to routine HTA requirements in the UK. This has full ethical approval and is included in the consent to take part in the study.


Estimated Enrollment: 10000
Study Start Date: August 2010
Estimated Study Completion Date: August 2014
Estimated Primary Completion Date: August 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts
Contacts of active cases of tuberculosis
new entrants from high incidence (>40/100000) countries.

  Show Detailed Description

  Eligibility

Ages Eligible for Study:   16 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population

Those who are close contacts of active tuberculosis cases or those who have are new entrants to the UK from high incidence countries (>40/100000).

Criteria

Inclusion Criteria:

  • Contacts of all active TB (pulmonary and extrapulmonary) patients. (Contacts will include all individuals with a cumulative duration of exposure of greater than eight hours to the relevant index case in a confined space during the period of infectiousness (prior to initiation of treatment) who attend designated clinics.
  • New entrants from high incidence countries (incidence of TB of >40/100000) who attend designated clinics

Exclusion Criteria:

  • Patients who are unable to give informed consent
  • Children under 16 years of age
  • Individuals found to have active TB at the time of screening
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01162265

Contacts
Contact: Ibrahim Abubakar, MD, PhD 0208 327 7144 ibrahim.abubakar@hpa.org.uk
Contact: Jo Southern, PhD 0208 327 6084 jo.southern@hpa.org.uk

Locations
United Kingdom
Ealing Hospital Not yet recruiting
Southall, London, United Kingdom, UB1 3HW
St George's Hospital Not yet recruiting
Tooting, London, United Kingdom, SW17 0QT
Homerton Hospital Not yet recruiting
London, United Kingdom, E9 6SR
Sponsors and Collaborators
Health Protection Agency, United Kingdom
Imperial College London
Queen Mary University of London
University College, London
Brunel University
University of Birmingham
Investigators
Principal Investigator: Frances Drobniewski, MD, PhD Health Protection Agency, United Kingdom
Principal Investigator: Ajit Lalvani, MD, PhD Imperial College London
  More Information

No publications provided

Responsible Party: Dr Ibrahim Abubakar, Consultant Epidemiologist and Head of HPA Tuberculosis Section, Health Protection Agency
ClinicalTrials.gov Identifier: NCT01162265     History of Changes
Other Study ID Numbers: PREDICT
Study First Received: July 12, 2010
Last Updated: July 13, 2010
Health Authority: United Kingdom: National Institute for Health Research
United Kingdom: National Health Service

Keywords provided by Health Protection Agency, United Kingdom:
Tuberculosis
IGRA

Additional relevant MeSH terms:
Tuberculosis
Latent Tuberculosis
Mycobacterium Infections
Actinomycetales Infections
Gram-Positive Bacterial Infections
Bacterial Infections
Interferon-gamma
Antiviral Agents
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions

ClinicalTrials.gov processed this record on September 18, 2014