Evidence map›Paper›PMID 28086775›Full record

ArticleMalaria journal2017

Rapid decline in the susceptibility of Plasmodium falciparum to dihydroartemisinin-piperaquine in the south of Vietnam.

Ngo Viet Thanh, Nguyen Thuy-Nhien, Nguyen Thi Kim Tuyen, Nguyen Thanh Tong, Nguyen Thuy Nha-Ca, Le Thanh Dong, Huynh Hong Quang, Jeremy Farrar, Guy Thwaites, Nicholas J White and 2 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 1 pooled it
25.5field-weighted citation impact, top 1% 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

99 citing papers in PubMed, 1 synthesis or guideline pooled it, 172 citations in OpenAlex.

  1. Pooled it
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  5. Pharmacokinetics andAntimicrobial agents and chemotherapy · 2020
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  14. mSphere · 2026
    Article
  15. Towards an evolutionary baseline model ofbioRxiv : the preprint server for biology · 2025
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  19. Frontiers in cellular and infection microbiology · 2024
    Article
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39 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

12 authors at 4 institutions in 3 countries.

Ngo Viet ThanhOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Nguyen Thuy-NhienOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam. nhienntt@oucru.org.ORCID 0000-0002-4101-5706
Nguyen Thi Kim TuyenOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Nguyen Thanh TongOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Nguyen Thuy Nha-CaOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Le Thanh DongInstitute of Malariology, Parasitology, and Entomology, Ho Chi Minh City, Vietnam.
Huynh Hong QuangInstitute of Malariology, Parasitology, and Entomology, Qui Nhon, Vietnam.
Jeremy FarrarOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Guy ThwaitesOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Nicholas J WhiteNuffield Department of Medicine, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK.
Marcel WolbersOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Tran Tinh HienOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City, Vietnam.
Oxford University Clinical Research Unit · VNUniversity of Oxford · GBNational Institute of Malariology, Parasitology and Entomology · VNMahidol University · TH

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundArtemisinin resistant Plasmodium falciparum has emerged in the countries of the Greater Mekong sub-region posing a serious threat to global malaria elimination efforts. The relationship of artemisinin resistance to treatment failure has been unclear.

methodsIn annual studies conducted in three malaria endemic provinces in the south of Vietnam (Binh Phuoc, Ninh Thuan and Gia Lai) between 2011 and 2015, 489 patients with uncomplicated P. falciparum malaria were enrolled in detailed clinical, parasitological and molecular therapeutic response assessments with 42 days follow up. Patients received the national recommended first-line treatment dihydroartemisinin-piperaquine for three days.

resultsOver the 5 years the proportion of patients with detectable parasitaemia on day 3 rose steadily from 38 to 57% (P < 0.001). In Binh Phuoc province, the parasite clearance half-life increased from 3.75 h in 2011 to 6.60 h in 2015 (P < 0.001), while treatment failures rose from 0% in 2012 and 2013, to 7% in 2014 and 26% in 2015 (P < 0.001). Recrudescence was associated with in vitro evidence of artemisinin and piperaquine resistance. In the treatment failures cases of 2015, all 14 parasite isolates carried the C580Y Pfkelch 13 gene, marker of artemisinin resistance and 93% (13/14) of them carried exoE415G mutations, markers of piperaquine resistance.

conclusionsIn the south of Vietnam recent emergence of piperaquine resistant P. falciparum strains has accelerated the reduced response to artemisinin and has led to treatment failure rates of up to 26% to dihydroartemisinin-piperaquine, Vietnam's current first-line ACT. Alternative treatments are urgently needed.

Indexed as

Drug ResistanceAdolescentAdultAntimalarialsArtemisininsChildChild, PreschoolEndemic DiseasesFemaleHumansIncidenceMalaria, FalciparumMalePiperazinesPlasmodium falciparumQuinolinesAntimalarialsArtemisininsartenimolpiperaquinePiperazinesQuinolinesArtemisinin resistanceParasite clearance half-lifePiperaquine resistance

Identifiers

PMID28086775
PMCPMC5237149
OpenAlexW2579721738

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.