Evidence map›Paper›PMID 32018194›Full record

ArticleEuropean journal of obstetrics, gynecology, and reproductive biology2020

Maternal variants within the apolipoprotein L1 gene are associated with preeclampsia in a South African cohort of African ancestry.

Semone Thakoordeen-Reddy, Cheryl Winkler, Jagidesa Moodley, Victor David, Elizabeth Binns-Roemer, Veron Ramsuran, Thajasvarie Naicker

Open access · greenAbstract read
In one paragraph

Article in European journal of obstetrics, gynecology, and reproductive biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Blood pressure andClinical kidney journal · 2026
    Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Kidney disease and reproductive health.Nature reviews. Nephrology · 2025
    Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Obstetric medicine · 2022
    Article
  16. Article
  17. Article
  18. Joint Associations of Maternal-Fetal APOL1 Genotypes and Maternal Country of Origin With Preeclampsia Risk.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2021
    Article
  19. Kidney disease and APOL1.Human molecular genetics · 2021
    Review
  20. Review
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

7 authors at 4 institutions in 2 countries.

Semone Thakoordeen-ReddyWomens' Health and HIV Research Group, Department of Obstetrics and Gynaecology, University of KwaZulu-Natal, South Africa. Electronic address: semonethakoordeen@gmail.com.
Cheryl WinklerBasic Research Program, Frederick National Laboratory, Frederick, MD, United States.
Jagidesa MoodleyWomens' Health and HIV Research Group, Department of Obstetrics and Gynaecology, University of KwaZulu-Natal, South Africa.
Victor DavidBasic Research Laboratory, Centre for Cancer Research, National Cancer Institute, Frederick, MD, United States.
Elizabeth Binns-RoemerBasic Research Program, Frederick National Laboratory, Frederick, MD, United States.
Veron RamsuranKwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, and Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.
Thajasvarie NaickerOptics and Imaging Centre, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, South Africa.
University of KwaZulu-Natal · ZAFrederick National Laboratory for Cancer Research · USCentre for the AIDS Programme of Research in South Africa · ZANational Cancer Institute · US

Funding

Genetics of Renal Disease in African AmericansZIABC010022 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI WINKLER, CHERYL · 2009 to 2022
$8.9M
Intramural NIH HHS ZIA BC010022
6 · The paper itself

Abstract

objectivePreeclampsia (PE) is a complex pregnancy-specific medical disorder arising from an ischaemic placenta releasing factors causing widespread endothelial damage involving multiple organs systems, such as the renal system. Two variant alleles, termed G1 and G2, of the APOL1 gene are strongly associated with progressive renal disease and preeclampsia in the recessive or compound heterozygous state. Hence, we investigated the role of maternal APOL1 genotype in the pathogenesis of preeclampsia in South African women of African ancestry. STUDY

designThis case-control study comprised three groups of South African pregnant women of African ancestry attending a regional hospital in Durban, South Africa: mothers experiencing normotensive pregnancies, early onset preeclampsia and late onset preeclampsia underwent APOL1 genotyping. Differences in G1 and G2 allele and genotype frequencies were analysed for the three groups.

resultsOur study revealed a significant association between the maternal APOL1 G1 risk allele and early-onset PE development (OR 2.2, p = 0.03). Among the EOPE group, 5 % [OR(95 %CI) 0.94 (0.29-3.12)] of the study population carried two risk alleles, 49 % [OR(95 %CI) 1.34 (0.77-2.3)] carried at least one risk allele, while 46 % of the participants did not carry either risk allele, compared to the normotensive pregnant group, where 52 % carried no risk allele, 42 % had at least one risk allele and 6 % of the women had both risk alleles.

conclusionOur results suggest that maternal APOL1 G1 risk allele may contribute to the development of early-onset PE in South African pregnant women of African ancestry either directly or by transmission of a APOL1 risk allele to the foetus.

Indexed as

AdultAllelesApolipoprotein L1Black PeopleCase-Control StudiesFemaleGenetic Predisposition to DiseaseHumansPolymorphism, GeneticPolymorphism, Single NucleotidePre-EclampsiaPregnancySouth AfricaYoung AdultAPOL1 protein, humanApolipoprotein L1APOL1G1APOL1G2Apolipoprotein L1PreeclampsiaSouth Africa

Identifiers

PMID32018194
PMCPMC8408904
OpenAlexW3003832937

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.