Evidence map›Paper›PMID 26545449›Full record

ArticleThe Lancet. Global health2015

Optimum population-level use of artemisinin combination therapies: a modelling study.

Tran Dang Nguyen, Piero Olliaro, Arjen M Dondorp, J Kevin Baird, Ha Minh Lam, Jeremy Farrar, Guy E Thwaites, Nicholas J White, Maciej F Boni

Open access · goldAbstract read
In one paragraph

Article in The Lancet. Global health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
7.9field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 81 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Tran Dang NguyenOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Piero OlliaroUniversity of Oxford, Oxford, UK.
Arjen M DondorpUniversity of Oxford, Oxford, UK; Mahidol-Oxford Research Unit, Wellcome Trust Major Overseas Programme, Bangkok, Thailand.
J Kevin BairdUniversity of Oxford, Oxford, UK; Eikman-Oxford Clinical Research Unit, Jakarta, Indonesia.
Ha Minh LamOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Jeremy FarrarOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam; Wellcome Trust, London, UK.
Guy E ThwaitesOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam; University of Oxford, Oxford, UK.
Nicholas J WhiteUniversity of Oxford, Oxford, UK; Mahidol-Oxford Research Unit, Wellcome Trust Major Overseas Programme, Bangkok, Thailand.
Maciej F BoniUniversity of Oxford, Oxford, UK. Electronic address: mboni@oucru.org.
Oxford University Clinical Research Unit · VNUniversity of Oxford · GB

Funding

Medical Research Council G0600718Medical Research Council MR/M006212/1Wellcome TrustWellcome Trust 077166/Z/05/ZWellcome Trust 089276/B/09/7Wellcome Trust 098511/Z/12/Z
6 · The paper itself

Abstract

backgroundArtemisinin combination therapies (ACTs) are used worldwide as first-line treatment against confirmed or suspected Plasmodium falciparum malaria. Despite the success of ACTs at reducing the global burden of malaria, emerging resistance to artemisinin threatens these gains. Countering onset of resistance might need deliberate tactics aimed at slowing the reduction in ACT effectiveness. We assessed optimum use of ACTs at the population level, specifically focusing on a strategy of multiple first-line therapies (MFT), and comparing it with strategies of cycling or sequential use of single first-line ACTs.

methodsWith an individual-based microsimulation of regional malaria transmission, we looked at how to apply a therapy as widely as possible without accelerating reduction of efficacy by drug resistance. We compared simultaneous distribution of artemether-lumefantrine, artesunate-amodiaquine, and dihydroartemisinin-piperaquine (ie, MFT) against strategies in which these ACTs would be cycled or used sequentially, either on a fixed schedule or when population-level efficacy reaches the WHO threshold of 10% treatment failure. The main assessment criterion was total number of treatment failures per 100 people per year. Additionally, we analysed the benefits of including a single non-ACT therapy in an MFT strategy, and did sensitivity analyses in which we varied transmission setting, treatment coverage, partner-drug half-life, fitness cost of drug resistance, and the relation between drug concentration and resistance evolution.

findingsUse of MFT was predicted to reduce the long-term number of treatment failures compared with strategies in which a single first-line ACT is recommended. This result was robust to various epidemiological, pharmacological, and evolutionary features of malaria transmission. Inclusion of a single non-ACT therapy in an MFT strategy would have substantial benefits in reduction of pressure on artemisinin resistance evolution, delaying its emergence and slowing its spread.

interpretationAdjusting national antimalarial treatment guidelines to encourage simultaneous use of MFT is likely to extend the useful therapeutic life of available antimalarial drugs, resulting in long-term beneficial outcomes for patients.

fundingWellcome Trust, UK Medical Research Council, Li Ka Shing Foundation.

Indexed as

Drug ResistancePlasmodium falciparumAmodiaquineAntimalarialsArtemether, Lumefantrine Drug CombinationArtemisininsDrug Administration ScheduleDrug CombinationsEthanolaminesFluorenesHumansMalaria, FalciparumModels, BiologicalPiperazinesQuinolinesTreatment FailureAmodiaquineamodiaquine, artesunate drug combinationAntimalarialsArtemether, Lumefantrine Drug CombinationartemisininArtemisininsartenimolDrug CombinationsEthanolaminesFluorenespiperaquinePiperazinesQuinolines

Identifiers

PMID26545449
PMCPMC4641185
OpenAlexW2113025968

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.