A Revised Tafenoquine Dose to Improve Radical Cure for Vivax Malaria

NCT ID: NCT06148792

Last Updated: 2025-07-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

1090 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-05-10

Study Completion Date

2027-03-01

Brief Summary

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The goal of this clinical trial is to assess the efficacy and safety or a revised weight band tafenoquine dose in vivax malaria patients. The main question\[s\] it aims to answer are:

* is a revised weight-based TQ regimen (TQRevised: target dose 7.5mg/kg) non-inferior to high dose primaquine (7mg/kg over 7 days)
* is a revised weight-based TQ regimen (TQRevised: target dose 7.5mg/kg) superior to fixed dose tafenoquine (300mg)
* is the tolerability and safety of TQRevised acceptable
* is TQRevised acceptable and feasible Participants will receive a tafenoquine target dose 7.5mg/kg in weight bands. Researchers will compare this to patients receiving a fixed dose tafenoquine and high dose primaquine to see if safe and effective.

Detailed Description

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Conditions

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Vivax Malaria

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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TQRevised

Patients are treated with schizontocidal treatment plus a single weight-based oral dose of TQ (target dose 7.5mg/kg)

Group Type EXPERIMENTAL

Tafenoquine

Intervention Type DRUG

oral treatment

TQStandard

Patients are treated with schizontocidal treatment plus single fixed oral dose of 300mg TQ (TQStandard)

Group Type ACTIVE_COMPARATOR

Tafenoquine

Intervention Type DRUG

oral treatment

PQ7

Patients are treated with schizontocidal treatment plus oral high dose PQ (total dose 7 mg/kg) over 7 days (PQ7)

Group Type EXPERIMENTAL

Primaquine

Intervention Type DRUG

oral treatment

Interventions

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Tafenoquine

oral treatment

Intervention Type DRUG

Primaquine

oral treatment

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* P. vivax peripheral parasitaemia (mono-infection)
* G6PD normal status (G6PD activity ≥70% of the adjusted male median as determined by the Standard G6PD (SDBioline, ROK))
* Fever (temperature ≥37.5⁰C) or history of fever in the preceding 48 hours
* Written informed consent
* Living in the study area and willing to be followed for six months

Exclusion Criteria

* Danger signs or symptoms of severe malaria
* Anaemia (defined as Hb \<8g/dl)
* Pregnant or lactating females
* Regular use of drugs with haemolytic potential
* Known hypersensitivity to any of the study drugs.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Melbourne

OTHER

Sponsor Role collaborator

Fundação de Medicina Tropical Dr. Heitor Vieira Dourado

OTHER

Sponsor Role collaborator

Arba Minch University

OTHER

Sponsor Role collaborator

Addis Ababa University

OTHER

Sponsor Role collaborator

Eijkman Research Center for Molecular Biology, National Research and Innovation Agency, Indonesia

UNKNOWN

Sponsor Role collaborator

Curtin University

OTHER

Sponsor Role collaborator

Papua New Guinea Institute of Medical Research

OTHER_GOV

Sponsor Role collaborator

Menzies School of Health Research

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Kamala N Thriemer, PhD

Role: PRINCIPAL_INVESTIGATOR

Menzies School of Health Research

Locations

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Dr Marcus Lacerda

Manaus, , Brazil

Site Status RECRUITING

Arba Minch General Hospital

Arba Minch, , Ethiopia

Site Status RECRUITING

Puskesmas Hanura

Hanura, , Indonesia

Site Status NOT_YET_RECRUITING

Dr Moses Laman and Dr Brioni Moore

Alexishafen, , Papua New Guinea

Site Status RECRUITING

Countries

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Brazil Ethiopia Indonesia Papua New Guinea

Central Contacts

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Hellen Mnjala

Role: CONTACT

+610889468675

kamala K Thriemer

Role: CONTACT

+610889468644

Facility Contacts

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Tamiru Shibiru Degaga, MD

Role: primary

Inge Prof Sutanto

Role: primary

Erni Dr Juwita

Role: backup

Other Identifiers

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TADORE

Identifier Type: -

Identifier Source: org_study_id

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