Evidence map›Paper›PMID 30388403›Full record

ArticleAmerican journal of human genetics2018

The Malaria-Protective Human Glycophorin Structural Variant DUP4 Shows Somatic Mosaicism and Association with Hemoglobin Levels.

Walid Algady, Sandra Louzada, Danielle Carpenter, Paulina Brajer, Anna Färnert, Ingegerd Rooth, Billy Ngasala, Fengtang Yang, Marie-Anne Shaw, Edward J Hollox

Open access · hybridAbstract read
In one paragraph

Article in American journal of human genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.5field-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

18 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Local genetic adaptation to habitat in wild chimpanzees.bioRxiv : the preprint server for biology · 2024
    Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
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

10 authors at 6 institutions in 3 countries.

Walid AlgadyDepartment of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK.
Sandra LouzadaWellcome Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Danielle CarpenterDepartment of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK.
Paulina BrajerDepartment of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK.
Anna FärnertDivision of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, 17176 Stockholm, Sweden; Department of Infectious Diseases, Karolinska University Hospital, Stockholm 17176, Sweden.
Ingegerd RoothNyamisati Malaria Research, Rufiji, National Institute for Medical Research, Dar-es-Salaam, Tanzania.
Billy NgasalaDepartment of Parasitology and Medical Entomology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania; Department of Women's and Children's Health, International Maternal and Child Health (IMCH), Uppsala Universitet, 75185 Uppsala, Sweden.
Fengtang YangWellcome Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Marie-Anne ShawLeeds Institute of Medical Research at St James's, University of Leeds, Leeds LS9 7TF, UK.
Edward J HolloxDepartment of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK. Electronic address: ejh33@le.ac.uk.
University of Leicester · GBWellcome Sanger Institute · GBKarolinska Institutet · SEMuhimbili University of Health and Allied Sciences · TZNational Institute for Medical Research · TZSt James's University Hospital · GB

Funding

Wellcome TrustWellcome Trust WT098051
6 · The paper itself

Abstract

Glycophorin A and glycophorin B are red blood cell surface proteins and are both receptors for the parasite Plasmodium falciparum, which is the principal cause of malaria in sub-Saharan Africa. DUP4 is a complex structural genomic variant that carries extra copies of a glycophorin A-glycophorin B fusion gene and has a dramatic effect on malaria risk by reducing the risk of severe malaria by up to 40%. Using fiber-FISH and Illumina sequencing, we validate the structural arrangement of the glycophorin locus in the DUP4 variant and reveal somatic variation in copy number of the glycophorin B-glycophorin A fusion gene. By developing a simple, specific, PCR-based assay for DUP4, we show that the DUP4 variant reaches a frequency of 13% in the population of a malaria-endemic village in south-eastern Tanzania. We genotype a substantial proportion of that village and demonstrate an association of DUP4 genotype with hemoglobin levels, a phenotype related to malaria, using a family-based association test. Taken together, we show that DUP4 is a complex structural variant that may be susceptible to somatic variation and show that DUP4 is associated with a malarial-related phenotype in a longitudinally followed population.

Indexed as

Cell LineChildChild, PreschoolErythrocytesFemaleGenomic Structural VariationGenotypeGlycophorinsHemoglobinsHumansLongitudinal StudiesMalariaMaleMosaicismPhenotypePlasmodium falciparumGlycophorinsHemoglobinsCNVcopy number variationfusion genegenome rearrangementglycophorinmalariamosaicismstructural variantsub-Saharan Africa

Identifiers

PMID30388403
PMCPMC6218809
OpenAlexW2953039392

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.