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CompletedNCT05406453TB_WGS_cRCTUpdated Oct 16, 2024

Whole Genome Sequencing of Tuberculosis for Disease Control in Madagascar

An interventional study of Whole Genome Sequencing testing in Tuberculosis, sponsored by Institut Pasteur de Madagascar. Completed at 1 site in Madagascar. Per ClinicalTrials.gov, last updated 2024-10-16.

Sponsored by Institut Pasteur de Madagascar · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
98,362
Allocation
Randomized
Sex
All
01

Study summary

Tuberculosis (TB) whole genome sequencing (WGS) allows outbreak identification and disease transmission tracking.

It is hypothesized that prospective WGS-guided epidemiological investigations improve case detection compared to current best practices by adapting contact tracing strategies to local transmission patterns.

A cluster randomized controlled trial (cRCT) will be performed in high TB incidence villages of Haute Matsiatra region in Madagascar. Communities will be randomized in three separate TB control strategies comparing (1) standard of care, (2) the World Health Organization (WHO) recommended best practices and (3) a novel intervention involving TB WGS cluster-guided epidemiological investigations. The incremental value of TB WGS on case notifications and reduction of TB burden will be measured.

Secondary studies will be nested within this cRCT will include:

  • A qualitative study which will increase the understanding of the factors facilitating and hindering implementation of WGS-based diagnostics within health systems.
  • A cost effectiveness analysis study which will measure the cost effectiveness of newly implemented laboratory methods.

Field and genomic epidemiology data from this project will inform future work on the design of community-level TB elimination strategies in collaboration with Madagascar National TB program

02

Conditions studied

  • Tuberculosis

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Keywords

  • Whole genome sequencing
  • cluster randomized controlled trial
03

In context

Tuberculosis

1,435 studies on the registry are indexed under Tuberculosis; 208 are open to participants now.

This study's enrollment of 98,362 is above the median of 150 across 963 interventional studies indexed under Tuberculosis.

Browse Tuberculosis studies →

Lead sponsor

Institut Pasteur de Madagascar is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Subjects suspected TB
  • subject living in the study area

Exclusion criteria

Exclusion Criteria:

  • unable to take a sputum sample
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Factorial assignment
Masking
None (open label)
Enrollment
98,362 participants (actual)

Study arms

  • No intervention
    Madagascar standard of care

    Description : * Passive case finding, * Smear microscopy testing, and * household contact tracing

  • No intervention
    Best practices

    Description : * Active case finding, * Smear microscopy * Xpert MTB/RIF Ultra testing (= rapid test by Genexpert for tuberculosis (TB) and rifampin resistance (RIF-R)) and * household contact tracing

  • Experimental
    Novel intervention

    Description : * Active case finding, * Smear microscopy * Xpert MTB/RIF Ultra testing and * household contact tracing

    Other: Whole Genome Sequencing testing

Interventions

  • OtherWhole Genome Sequencing testing

    Whole Genome Sequencing testing, community-based contact tracing

06

What researchers measure

Primary outcomes

  1. the total number of TB cases detected / 100 000 inhabitants

    total number of TB cases detected / 100,000 inhabitants / year in each group during the first year of the intervention.

    Time frame: an average of 1 year

07

Study locations

1 site
  • Fokontany Vohibato
    Vohibato, Madagascar
08

References and documents

Publications

  • Ametepe ESA, Andriamanoha N, Andrianomanana FR, Point F, Mangahasimbola RT, Dyachenko A, Hall M, Gamana TM, Knoblauch AM, Razafindrasoa YY, Nimalan A, Behr M, Durand M, Johri M, Iqbal Z, Rakotoarivelo AR, Randremanana RV, Rakotosamimanana N, Lapierre SG. Whole genome sequencing of M. tuberculosis for disease control in high-burden settings: study protocol for a cluster randomized controlled trial evaluating different community-wide intervention strategies in rural Madagascar. Trials. 2024 Oct 25;25(1):717. doi: 10.1186/s13063-024-08537-4. PubMed 39456079 ↗

Individual participant data

Plan to share: Yes — Upon request to the investigator

Supporting information: Study protocol, Informed consent form

Time frame: Upon request

Access criteria: Upon request to the investigator

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 16, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05406453
Lead sponsor
Institut Pasteur de Madagascar
Collaborators
The National Tuberculosis Program, Madagascar, Centre de Recherche du Centre Hospitalier de l'Université de Montréal
Responsible party
Simon Grandjean Lapierre (Researcher, Institut Pasteur de Madagascar) — Principal investigator
First posted
Jun 6, 2022
Start date
May 16, 2022
Primary completion
Jun 30, 2024
Completion
Jun 30, 2024
Last update
Oct 16, 2024

Study contacts

Simon Grandjean Lapierre, MD MSc FRCPC
principal investigator · CHUM

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 completed, as verified in Oct 2024. You cannot join it, but the record below documents what was studied.

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