Assessment of Recombinant HAT-RDT Specificity

September 27, 2023 updated by: Institute of Tropical Medicine, Belgium

Assesslebt of Recombinant HAT-RDT Specificity

Human African trypanosomiasis HAT, or sleeping sickness, is a tropical disease caused mainly by the parasite Trypanosoma brucei gambiense (gHAT). After a severe epidemic in the 1990s, the World Health Organization (WHO) now targets elimination of transmission of gHAT by the year 2030, which heavily relies on its diagnosis and treatment. Traditional screening tests (like CATT or rapid diagnostic tests (RDTs)) are based on the detection of antibodies against the parasite using native antigens, which are costly and dangerous to produce. New serological tests, using recombinant antigens, have been developed, but little is known about their field performance. The primary objective of this study is to assess the specificity of the newly-developed recombinant RDTs, since it will become very relevant as we move forward towards a screen&treat strategy. We will also compare the diagnostic accuracy and overall performance of iELISA and molecular testing.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

This prospective study will follow two different mobile units as they go on their routine screening of the gHAT endemic population. Study participants will be enrolled during the routine screening, and after providing informed consent, they will be asked for a 4.5 ml venous blood sample. The three RDTs (HAT Sero-K-SeT, rHAT Sero-K-SeT, Bioline HAT 2.0) and CATT will be performed on site, while part of the sample will be mixed with DNA/RNA Shield for molecular analysis and the rest will be left to decant, to collect plasma for iELISA and TL. Confirmatory tests will be performed in the field on any seropositive individual. Should any case be confirmed, treatment will be offered, free of charge, following PNLTHA guidelines.

The obtained data will allow for a very precise estimation of the specificity of the newly developed recombinant RDTs. This study does not aim to determine the sensitivity of these tests since, due to the very low prevalence, the chance of having sufficient seropositive samples and/or finding a true case are very slim. The diagnostic performance of iELISA and novel molecular tests will also be determined.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
1504

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: Raquel Inocencio da Luz, Phd BMSC
  • Phone Number: +3232476519
  • Email: rinocencio@itg.be

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The study population are the people living in villages that are at risk for HAT infection, as the first stade of the disease is asymptomatic or with non-specific symptoms, the whole village is invited to participate in the active screening activity. This is routine active screening done by the mobile team. they study team will recruit people that participate to the screening campaign.

Description

Inclusion Criteria:

  • Willing and able to provide written informed consent (and assent for minors 12-17years old)
  • Be enrolled in routine HAT screening activities dony by the mobile unit (PNLTHA mobile unit routine active screening teams that visit villages at risk for HAT). People living in the village are targeted for screening.
  • Participants must be at least 12 years old

Exclusion Criteria:

  • Chilrden younger than 12 years old
  • previously treated for HAT
  • refusal to provide informed consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Other
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Specificity of recombinant CORIS rapid diagnostic test for HAT
Time Frame: 1 month
recombinant RDT for detection of HAT developed by CORIS, determine its field performance
1 month
Specificity of recombinant BIOLINE rapid diagnostic test for HAT
Time Frame: 1 months
recombinant RDT for detection of HAT developed by BIOLINE, determine its field performance
1 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
iELISA
Time Frame: 3 months
determine performance of inhibition ELISA test to replace Trypanolyse test
3 months
Molecular
Time Frame: 4 months
determine if active infection of HAT is present using molecular testing technique, determine its performances
4 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Institute of Tropical Medicine, Belgium

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Epco Hasker, Phd PH, Insitute of Tropical Medicine

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 20, 2022

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 20, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 20, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 24, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 24, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 5, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 28, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 27, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HAT-RDT

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

anonymity of participants must be guaranteed anonymised study results can be shared with other researchers

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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