Evidence map›Paper›PMID 28673292›Full record

ArticleMalaria journal2017

Effect of pharmacogenetics on plasma lumefantrine pharmacokinetics and malaria treatment outcome in pregnant women.

Ritah F Mutagonda, Appolinary A R Kamuhabwa, Omary M S Minzi, Siriel N Massawe, Muhammad Asghar, Manijeh V Homann, Anna Färnert, Eleni Aklillu

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 28 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 4 pooled it
5.7field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 4 syntheses or guidelines pooled it, 46 citations in OpenAlex.

  1. Pooled it
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  15. Journal of personalized medicine · 2022
    Article
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  19. Association ofPharmacogenomics and personalized medicine · 2021
    Article
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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

8 authors at 2 institutions in 2 countries.

Ritah F MutagondaDepartment of Clinical Pharmacy and Pharmacology, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania. rittdavisrida@yahoo.com.
Appolinary A R KamuhabwaDepartment of Clinical Pharmacy and Pharmacology, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania.
Omary M S MinziDepartment of Clinical Pharmacy and Pharmacology, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania.
Siriel N MassaweDepartment of Obstetrics and Gynaecology, School of Medicine, Muhimbili University of Allied Sciences, P.O Box 65013, Dar es Salaam, Tanzania.
Muhammad AsgharUnit of Infectious Diseases, Department of Medicine, Karolinska Institutet, Solna, 171 76, Stockholm, Sweden.
Manijeh V HomannUnit of Infectious Diseases, Department of Medicine, Karolinska Institutet, Solna, 171 76, Stockholm, Sweden.
Anna FärnertUnit of Infectious Diseases, Department of Medicine, Karolinska Institutet, Solna, 171 76, Stockholm, Sweden.
Eleni AklilluSection of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, 171 77, Stockholm, Sweden.
Karolinska Institutet · SEMuhimbili University of Health and Allied Sciences · TZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPregnancy has considerable effects on the pharmacokinetic properties of drugs used to treat uncomplicated Plasmodium falciparum malaria. The role of pharmacogenetic variation on anti-malarial drug disposition and efficacy during pregnancy is not well investigated. The study aimed to examine the effect of pharmacogenetics on lumefantrine (LF) pharmacokinetics and treatment outcome in pregnant women.

methodsPregnant women with uncomplicated falciparum malaria were enrolled and treated with artemether-lumefantrine (ALu) at Mkuranga and Kisarawe district hospitals in Coast Region of Tanzania. Day-7 LF plasma concentration and genotyping forCYP2B6 (c.516G>T, c.983T>C), CYP3A4*1B, CYP3A5 (*3, *6, *7) and ABCB1 c.4036A4G were determined. Blood smear for parasite quantification by microscopy, and dried blood spot for parasite screening and genotyping using qPCR and nested PCR were collected at enrolment up to day 28 to differentiate between reinfection from recrudescence. Treatment response was recorded following the WHO protocol.

resultsIn total, 92 pregnant women in their second and third trimester were included in the study and 424 samples were screened for presence of P. falciparum. Parasites were detected during the follow up period in 11 (12%) women between day 7 and 28 after treatment and PCR genotyping confirmed recrudescent infection in 7 (63.3%) women. The remaining four (36.4%) pregnant women had reinfection: one on day 14 and three on day 28. The overall PCR-corrected treatment failure rate was 9.0% (95% CI 4.4-17.4). Day 7 LF concentration was not significantly influenced by CYP2B6, CYP3A4*1B and ABCB1 c.4036A>G genotypes. Significant associations between CYP3A5 genotype and day 7 plasma LF concentrations was found, being higher in carriers of CYP3A5 defective variant alleles than CYP3A5*1/*1 genotype. No significant influence of CYP2B6, CYP3A5 and ABCB1 c.4036A>Genotypes on malaria treatment outcome were observed. However, CYP3A4*1B did affect malaria treatment outcome in pregnant women followed up for 28 days (P = 0.018).

conclusionsGenetic variations in CYP3A4 and CYP3A5may influence LF pharmacokinetics and treatment outcome in pregnant women.

Indexed as

AdolescentAdultAllelesAntimalarialsAryl Hydrocarbon HydroxylasesATP Binding Cassette Transporter, Subfamily B, Member 1Cohort StudiesCytochrome P-450 CYP2B6Cytochrome P-450 CYP3ACytochrome P450 Family 2EthanolaminesFemaleFluorenesGene FrequencyGenotypeHaplotypesAntimalarialsAryl Hydrocarbon HydroxylasesATP Binding Cassette Transporter, Subfamily B, Member 1cytochrome P-450 CYP2B5 (rabbit)Cytochrome P-450 CYP2B6Cytochrome P-450 CYP3ACytochrome P450 Family 2EthanolaminesFluorenesLumefantrineSteroid HydroxylasesDay 7 lumefantrine concentrationMalaria in pregnancyPharmacogeneticsRecrudescence

Identifiers

PMID28673292
PMCPMC5496343
OpenAlexW2733245723

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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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.