ClinicalTrials.gg
Status unknownNCT03251196TBSEQUELUpdated Jan 13, 2021

TB Sequel: Pathogenesis and Risk Factors of Long-term Sequelae of Pulmonary TB

An observational study in Respiratory Tract Infections and Tuberculosis, Pulmonary, sponsored by The Aurum Institute NPC. Status unknown at 4 sites in 4 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-01-13.

Primary conditionTuberculosis, PulmonaryRegistry: Respiratory Tract InfectionsReclassifiedWhy we changed it
Registry
Respiratory Tract Infections — the first condition term the registry derived for this study.
ClinicalTrials.gg
Tuberculosis, Pulmonary
Why
  1. The study's listed conditions name Tuberculosis, Pulmonary, a narrower term within Respiratory Tract Infections.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by The Aurum Institute NPC · Observational

The sponsor has not verified this record recently (last verified Jan 2021), so the status shown — last known as Active, not recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,500
Ages
18 Years and older
Sex
All
01

Study summary

This is an observational cohort study. Pulmonary tuberculosis (TB) patients will be enrolled at the time of TB diagnosis and prospectively followed for at least two years after TB-treatment initiation with optional prolonged follow-up. Study visits will be performed in the study clinics or if necessary at the participant's home at pre-defined time points after TB treatment initiation. Clinical assessments, biological sample collections and collection of socio-economic data will be performed according to the pre-defined schedule of events.

Read the detailed description

The African continent today is emblematic of TB as a global health emergency with little known about the long-term sequelae. It is likely that TB patients from resource-constrained settings, who usually present with more extensive disease, are left with greater lung impairment.

This project aims to advance the understanding of the clinical, microbiologic, and host immune factors affecting the long-term sequelae of pulmonary tuberculosis; to identify the most important factors that contribute to lung impairment, including the immunological response and genetic predisposition of the host and differences in the biology of the pathogen; to determine occurrence of reversible and irreversible costs and socioeconomic consequences for patients; and to facilitate novel interventions to restore and preserve overall health, well-being and financial protection in patients with TB.

The core of the current project is a prospective cohort of up to 1600 patients across four countries (Mozambique, Tanzania, South Africa and The Gambia), enrolled at the time of TB diagnosis, and followed up for at least 2 years. The overall goal of the cohort is to describe and analyse the basis of the long-term clinical consequences of pulmonary TB, with a particular focus on lung injury. The investigators will enroll patients during two years and follow each patient up for at least two years. The project also includes a number of sub-studies: Host-Immunology, Pathogen and Socio-Economic. General laboratory tests and TB specific tests, X-ray, physical examination and cardio-pulmonary assessment will be performed and the obtained clinical data will be recorded in study questionnaires. The investigators will collect and analyse biological specimens (blood, urine and sputum) longitudinally during the period of observation and after all specimens have been stored. In-depth analysis of the host immune response, focusing on potential mechanisms of lung damage, including oxidative injury, proteolytic matrix degradation, and neutrophil-mediated damage, neutrophil-macrophage ratios and markers; and molecular analysis of mycobacterial dynamics and markers in relation to pulmonary and microbiological treatment outcomes, including success, failure, relapse, reinfection and death will be carried out. Socio-economic data, including patient costs, will be collected at the time of TB diagnosis, during treatment, at the end of treatment and during the follow-up period, and analysed to determine how the risk of TB sequelae is linked with the socioeconomic position of the patient, to establish the occurrence of catastrophic costs due to TB and the proportion of patients that resort to potentially irreversible socioeconomic coping strategies.

Accurate data source will be maintained and confidentiality will be guaranteed. Data will be analysed according to the statistical plan. Results of the study will be disseminated to all relevant stakeholders through meetings, reports and publications.

02

Conditions studied

  • Respiratory Tract Infections
  • Tuberculosis, Pulmonary

Browse trials for

03

In context

Tuberculosis, Pulmonary Reclassified

319 studies on the registry are indexed under Tuberculosis, Pulmonary; 71 are open to participants now.

This study's enrollment of 1,500 is above the median of 300 across 83 observational studies indexed under Tuberculosis, Pulmonary.

Browse Tuberculosis, Pulmonary studies →

Lead sponsor

The Aurum Institute NPC is the lead sponsor of 15 studies on the registry; 2 are open to participants now.

Compared within Tuberculosis, Pulmonary, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Respiratory Tract Infections. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

This will be a multi-country, multi-centre observational cohort study, conducted at four recruiting sites in four African countries: 1) University of the Witwatersrand (WITS), Johannesburg in South Africa; 2) NIMR-Mbeya Medical Research Center (NIMR-MMRC), Mbeya in Tanzania; 3) Instituto Nacional de Saúde (INS), Ministry of Health, Mozambique; 4) Medical Research Council (MRC) Unit The Gambia, Fajara, The Gambia.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • At least one sputum sample tested positive for Mtb by Xpert MTB/RIF assay in the study clinic/study laboratory or at least one sputum sample tested positive by culture methods in study laboratory or other TB laboratory
  • Be ≥ 18 years of age
  • Willingness to provide a written consent or witnessed oral consent in the case of illiteracy for participation in the study, prior to patient's first sample or other study-specific data being collected
  • Willing to be tested for infection
  • Agrees to the collection and storage of blood, urine, and sputum specimens for use in future research
  • Willing to start anti-TB treatment after TB diagnosis
  • Living within the study area and willing to inform the study team of any change of address during the treatment and follow-up period

Exclusion criteria

Exclusion Criteria:

  • Has received TB treatment in the last 6 months
  • Has incapacity to produce and provide two sputum samples of sufficient quality (3 ml)
  • Has severe medical or psychiatric condition which in the opinion of the site investigator or designee, might interfere with the ability to give true and to adhere to the study requirements
  • Is currently imprisoned
  • Taking part in product trials related to TB and/or lung diseases
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,500 participants (actual)
Target follow-up
2 Years
Patient registry
Yes
Biospecimen retention
Samples with dna

Interventions

  • OtherNo Intervention, and Observational Study

    Observational Study

    Also known as: Observational Study

06

What researchers measure

Primary outcomes

  1. Severe pulmonary function impairment

    Measured by spirometry

    Time frame: 2 years

Secondary outcomes

  1. Changes in impairment of pulmonary function

    Measured by six minute walking test

    Time frame: 2 years

07

Study locations

4 sites
  • The MRC-Unit
    Fajara, Gambia
  • Instituto Nacional de Saúde
    Maputo, Mozambique
  • The Clinical HIV Research Unit
    Johannesburg, Gauteng 2092, South Africa
  • NIMR-Mbeya Medical Research Centre
    Mbeya, Tanzania
08

References and documents

Publications

  • Rachow A, Ivanova O, Wallis R, Charalambous S, Jani I, Bhatt N, Kampmann B, Sutherland J, Ntinginya NE, Evans D, Lonnroth K, Niemann S, Schaible UE, Geldmacher C, Sanne I, Hoelscher M, Churchyard G. TB sequel: incidence, pathogenesis and risk factors of long-term medical and social sequelae of pulmonary TB - a study protocol. BMC Pulm Med. 2019 Jan 7;19(1):4. doi: 10.1186/s12890-018-0777-3. PubMed 30616617 ↗

Individual participant data

Plan to share: Yes — To be shared amongst the Collaborators, on shared database when the study starts

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 13, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03251196
Lead sponsor
The Aurum Institute NPC
Collaborators
Ludwig-Maximilians - University of Munich, Research Center Borstel, University of Witwatersrand, South Africa, Mbeya Medical Research Centre NIMR, Ministry of Health Instituto Nacional de Saude, Medical Research Council Unit, The Gambia, Karolinska Institutet
Responsible party
Sponsor
First posted
Aug 16, 2017
Start date
Sep 22, 2017
Primary completion
Jun 30, 2022 (estimated)
Completion
Jun 30, 2022 (estimated)
Last update
Jan 13, 2021

Study contacts

Gavin J Churchyard
principal investigator · Chief Executive Officers

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.

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