Rapid Diagnostic Tests for Assessment of Initial Clearance and Detection of Recurrent Malaria Infections

May 2, 2013 updated by: Anders Björkman

Efficacy of Plasmodium Falciparum Specific Rapid Diagnostic Tests for Assessment of Initial Clearance and Detection of Recurrent Infections After Antimalarial Treatment

The aim of the study was to follow clearance of malaria infections and detection of new malaria episodes after initiation of antimalarial treatment in Tanzanian children. For this purpose the investigators used five diagnostic tools, 2 Rapid Diagnostic tests based on Histidine Rich Protein 2(HRP2) and Lactate dehydrogenase(LDH), 2 microscopical methods and one polymerase chain reaction (PCR). The investigators followed the 53 enrolled children during 42 days.

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.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

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.
53

Contacts and Locations

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

Study Locations

  • Tanzania
      • Dar es Salaam, Tanzania, 65001
        • Muhimbili University of Health Allied Science
    • Kibaha and Bagamoyo district
      • Dar es Salaam, Kibaha and Bagamoyo district, Tanzania
        • Mlandizi Health Centre and Fukayosi dispencary

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

6 months to 4 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Children with fever visiting primary health care units in malaria endemic area

Description

Inclusion Criteria:

  • children between 6-59 months
  • fever (≤37.5 C) or history of fever during the preceding 24 hours
  • confirmed P.falciparum monoinfection
  • uncomplicated malaria
  • parasite density between 2000-250.000/µL
  • willing/able to comply with the 42 day follow up
  • informed concent from patient/guardian

Exclusion Criteria:

  • children with history of antimalaria drug intake within the last two weeks
  • symptoms / signs of severe disease

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
children with malaria
Tanzanian children between 6-59 months with an uncomplicated P.falciparum monoinfection, followed after arthemeter-lumefantrine treatment according to national treatment guidelines
Device: HRP2 and LDH based rapid diagnostic tests for P.falciparum
Other Names:
  • ParaHit (HRP2)
  • CareStart (pLDH)

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
Clearance time with five diagnostic tests
Time Frame: 2009 June to 2012 May (up to day 42)
Children were followed up on 9 occasions until day 42. Mean and median time until clearance after initiation of arthemeter-lumefantrine treatment was measured for HRP2 based Rapid diagnostic tests, LDH-based Rapid diagnostic tests, Giemsa and Acridine Orange stained microscopy and real-time PCR.
2009 June to 2012 May (up to day 42)
Detection of recurrent infection with HRP2 and LDH-based Rapid diagnostic tests during follow up
Time Frame: 2009 June to 2012 May (up to day 42)
Ability to detect recurrent malaria infection with the HRP2 and LDH-Rapid diagnostic tests during the 42 days of follow up was studied through comparing them with three other diagnostic tests.
2009 June to 2012 May (up to day 42)

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
Efficiency of P.falciparum specific rapid diagnostic tests
Time Frame: 2009 June to 2012 May (up to day 42)
Efficiency of two rapid diagnostic tests based on two different antigens for diagnosis and treatment follow up among children <5 years in a moderately high endemic area was determined. Specificity and false positivity rate for HRP2 and LDH based rapid diagnostic tests are calculated against Giemsa stained microscopy and PCR.
2009 June to 2012 May (up to day 42)

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.
Anders Björkman

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Muhimbili University of Health and Allied Sciences

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: Anders Björkman, Professor, Karolinska Institutet

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

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.
June 1, 2009

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.
April 1, 2011

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.
June 1, 2012

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).
February 15, 2013

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.
April 30, 2013

First Posted (Estimate)

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.
May 1, 2013

Study Record Updates

Last Update Posted (Estimate)

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.
May 3, 2013

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.
May 2, 2013

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.
May 1, 2013

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.
  • RDT-ClearTZ1
  • KI-MUHAS1 (Registry Identifier: RDT-ClearTZ1)

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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