Study Groups

WWARN facilitates a number of collaborative Study Groups to undertake individual patient data meta-analyses to answer specific research questions about malaria treatments and antimalarial drug resistance. Gathering and combining data sets from multiple studies increases sample sizes, so that effects, including smaller effects, and effects on sub-populations can be identified with greater certainty. Working together and combining data from different regions and populations is improving our understanding of drug resistance and strengthening global efforts to control and eventually eliminate malaria.

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Dominic Chavez World Bank
Development of statistical methods to infer the relationship between the percentage of resistant infections, parasite clearance half-life and the prop...

Development of statistical methods to infer the relationship between the percentage of resistant infections, parasite clearance half-life and the proportion of treated individuals still positive on days one, two and three of treatment

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The Alternative MiP Prevention Strategies (AMPS) Study Group’s aim is to determine the safety and efficacy of novel strategies for the control of mala...

The Alternative MiP Prevention Strategies (AMPS) Study Group’s aim is to determine the safety and efficacy of novel strategies for the control of malaria in pregnancy, specifically intermittent screening and treatment (ISTp), with an artemisinin-based combination therapy (ACT).

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A pooled analysis assessing the effect of mg/kg dosing strategies on the risk of treatment failure in patients treated with the currently recommended ...

A pooled analysis assessing the effect of mg/kg dosing strategies on the risk of treatment failure in patients treated with the currently recommended dose of artesunate-mefloquine (AS-MQ).

Research groups with relevant data have been contacted with data collection and curation still ongoing. Analysis will start in late 2016 and drafting publication in expected in 2018.

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The Piperaquine Safety Study Group’s aim is to establish the evidence-base and safety profile to inform decision-making on the use and optimal dosing ...

The Piperaquine Safety Study Group’s aim is to establish the evidence-base and safety profile to inform decision-making on the use and optimal dosing of dihydroartemisinin-piperaquine in all key target populations.

The study group call for contributors opened in June 2016 with a first scoping meeting held in July. Data collection is planned to close by end of 2016, with analysis due in 2018-2019.

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The Subpatent Malaria and Pregnancy Outcome Study Group aims to explore the relationship between subpatent Plasmodium falciparum malaria inf...

The Subpatent Malaria and Pregnancy Outcome Study Group aims to explore the relationship between subpatent Plasmodium falciparum malaria infection and pregnancy outcome

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Analysis of the effect of primaquine dose on the efficacy, safety and tolerability in patients with Plasmodium vivax malaria
An analysis of pooled individual patient data to determine the effect of antiretroviral (ARV) drug-drug interactions and HIV disease on lumefantr...

An analysis of pooled individual patient data to determine the effect of antiretroviral (ARV) drug-drug interactions and HIV disease on lumefantrine pharmacokinetics (and pharmacodynamics).

This study group has just opened for data collection. If you have any data you would like to share, or if you would like to participate in the project, please contact pharmacology@wwarn.org.

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Sub-study groups include the Artemether-Lumefantrine / ARV PK Study Group and the ACT-ARV Safety Study Group.
Assessing the efficacy of a range of antimalarials used for the treatment of P. falciparum malaria in all trimesters of pregnancy in Africa ...

Assessing the efficacy of a range of antimalarials used for the treatment of P. falciparum malaria in all trimesters of pregnancy in Africa and Asia

The MiP Treatment Efficacy Study Group was formed in July 2016, with a call to interested researchers with relevant data sets.

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Analysis of haematological response before and after antimalarial treatment. A pooled analysis to understand the normal haematological response a...

Analysis of haematological response before and after antimalarial treatment. 

A pooled analysis to understand the normal haematological response and recovery following the treatment of uncomplicated malaria. The group will work together to quantify the risks and benefits of different treatment options of both ACTs and other antimalarials.

Data meeting the inclusion criteria has been collected and standardised from over 70,000 patients. Data gathering, curation and data analysis have been completed. A manuscript is under review of study group members and expected to be submitted for publication Q2 2020. 

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The overall aim of the IPTp and SP-resistance-associated mutations Study Group is to quantify how parasites with the sextuple mutant pfdhps and pfdhfr...

The overall aim of the IPTp and SP-resistance-associated mutations Study Group is to quantify how parasites with the sextuple mutant pfdhps and pfdhfr haplotype* modify the effect of IPTp on maternal and infant outcomes.

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Characterising the population pharmacokinetic properties of ivermectin in children and adults to inform optimal dosing of ivermectin
The sulphadoxine-pyrimethamine (SP) resistance Data Access Group’s aim is to provide maps and open access to the most recent data on molecular markers...

The sulphadoxine-pyrimethamine (SP) resistance Data Access Group’s aim is to provide maps and open access to the most recent data on molecular markers of SP resistance to help policy makers make informed decisions with regard to use of SP for intermittent preventive treatment of malaria in pregnancy (IPTp) or seasonal malaria chemoprevention (SMC).

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Analysis of how age impacts the effect of primaquine dose on efficacy in patients with Plasmodium vivax and Plasmodium ovale malaria
The First Trimester Safety of ACTs Study Group’s aim is to establish the evidence-base and safety profile to inform decision-making on the use of arte...

The First Trimester Safety of ACTs Study Group’s aim is to establish the evidence-base and safety profile to inform decision-making on the use of artemisinin combination therapies in the first trimester of pregnancy.

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Baseline information on parasitological response to ACTs in AsiaA pooled analysis to assess the baseline early parasitological response after artemisi...

Baseline information on parasitological response to ACTs in Asia

A pooled analysis to assess the baseline early parasitological response after artemisinin combination therapy (ACT) treatment in Asia. The analysis compiles the day 3 parasite positivity rates (PPR) in patients with uncomplicated Plasmodium falciparum malaria enrolled in ACT clinical efficacy trials conducted in Asia.

Data gathering and curation has started. Data meeting the inclusion criteria has already been collected and standardised from over 12,000 patients. Data analysis will start April 2015 with a manuscript schedules for submission and publication by December 2015. 

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This is an extension of the WWARN Haemoglobin-Haematocrit Relationship in Malaria Study Group and the Antimalarial–Antiretroviral Analy...

This is an extension of the WWARN Haemoglobin-Haematocrit Relationship in Malaria Study Group and the Antimalarial–Antiretroviral Analyses Study Group. These groups aimed to consider the effect of HIV disease and co-administration of widely-used antiretroviral drugs (ARVs) on artemisinin-based combination therapies (ACTs).  

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Determining the effects of pregnancy on piperaquine pharmacokinetics. The analysis aims to contribute evidence needed to inform recommendations on the...

Determining the effects of pregnancy on piperaquine pharmacokinetics. The analysis aims to contribute evidence needed to inform recommendations on the use and optimal dosing of piperaquine in pregnant women.

Determining the effects of pregnancy on piperaquine pharmacokinetics. The analysis aims to contribute evidence needed to inform recommendations on the use and optimal dosing of piperaquine in pregnant women.

 

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