Evidence map›Paper›PMID 30651111›Full record

SynthesisBMC medicine2019

Association of mutations in the Plasmodium falciparum Kelch13 gene (Pf3D7_1343700) with parasite clearance rates after artemisinin-based treatments-a WWARN individual patient data meta-analysis.

WWARN K13 Genotype-Phenotype Study Group

Abstract readMeta-Analysis
In one paragraph

Synthesis in BMC medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

119 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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  15. High throughput quantitative tracking ofbioRxiv : the preprint server for biology · 2026
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59 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

WWARN K13 Genotype-Phenotype Study Group

Funding

Resistance of Malaria Parasites to Artemisinin-Based TherapiesR01AI075045 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI ROSENTHAL, PHILIP JON · 2009 to 2024
$8.4M
Genome-wide studies to identify markers of artemisinin-resistant malariaR01AI101713 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI HARRISON, SHANNON TAKALA · 2013 to 2016
$1.8M
Medical Research Council MC_EX_MR/K02440X/1NIAID NIH HHS R01 AI075045NIAID NIH HHS R01 AI101713Wellcome Trust
6 · The paper itself

Abstract

backgroundPlasmodium falciparum infections with slow parasite clearance following artemisinin-based therapies are widespread in the Greater Mekong Subregion. A molecular marker of the slow clearance phenotype has been identified: single genetic changes within the propeller region of the Kelch13 protein (pfk13; Pf3D7_1343700). Global searches have identified almost 200 different non-synonymous mutant pfk13 genotypes. Most mutations occur at low prevalence and have uncertain functional significance. To characterize the impact of different pfk13 mutations on parasite clearance, we conducted an individual patient data meta-analysis of the associations between parasite clearance half-life (PC

methodsA systematic literature review following the PRISMA protocol was conducted to identify studies published between 2000 and 2017 which included frequent parasite counts and pfk13 genotyping. Four databases (Ovid Medline, PubMed, Ovid Embase, and Web of Science Core Collection) were searched. Eighteen studies (15 from Asia, 2 from Africa, and one multicenter study with sites on both continents) met inclusion criteria and were shared. Associations between the log transformed PC

resultsBoth the pfk13 genotypes and the PC

conclusionPooled analysis associated 20 pfk13 propeller region mutant alleles with the slow clearance phenotype, including 15 mutations not confirmed previously.

Indexed as

AfricaAnimalsAntimalarialsArtemisininsAsiaDrug ResistanceGenes, ProtozoanGenotypeHumansKelch RepeatMalaria, FalciparumMutationPhenotypePlasmodium falciparumAntimalarialsartemisininArtemisinins

Identifiers

PMID30651111
PMCPMC6335805

What OpenQuestion holds

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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.