The high prevalence of sickle haemoglobin in Africa shows that malaria has been a major force for human evolutionary selection, but surprisingly few other polymorphisms have been proven to confer resistance to malaria in large epidemiological studies. To address this problem, we conducted a multi-centre genome-wide association study (GWAS) of life-threatening Plasmodium falciparum infection (severe malaria) in over 11,000 African children, with replication data in a further 14,000 individuals. Here we report a novel malaria resistance locus close to a cluster of genes encoding glycophorins that are receptors for erythrocyte invasion by P. falciparum. We identify a haplotype at this locus that provides 33% protection against severe malaria (odds ratio = 0.67, 95% confidence interval = 0.60–0.76, P value = 9.5 × 10−11) and is linked to polymorphisms that have previously been shown to have features of ancient balancing selection, on the basis of haplotype sharing between humans and chimpanzees. Taken together with previous observations on the malaria-protective role of blood group O, these data reveal that two of the strongest GWAS signals for severe malaria lie in or close to genes encoding the glycosylated surface coat of the erythrocyte cell membrane, both within regions of the genome where it appears that evolution has maintained diversity for millions of years. These findings provide new insights into the host–parasite interactions that are critical in determining the outcome of malaria infection.
A novel locus of resistance to severe malaria in a region of ancient balancing selection
Gavin Kirk A. Chris C. A. Dominic P. Band Rockett Spencer Kwiatkowski,G. Band,K. Rockett,C. Spencer,D. Kwiatkowski,Quang Si Le,G. Clarke,K. Kivinen,E. Leffler,Victoria J Cornelius,D. Conway,T. Williams,T. Taylor,K. Bojang,O. Doumbo,M. Thera,D. Modiano,S. Sirima,M. Wilson,K. Koram,T. Agbenyega,E. Achidi,K. Marsh,Hugh Reyburn,C. Drakeley,E. Riley,M. Molyneux,M. Jallow,M. Pinder,O. Toure,S. Konaté,Sibiri Sissoko,Edith C. Bougouma,V. Mangano,L. Amenga-Etego,A. Ghansah,A. Hodgson,D. Ansong,A. Enimil,Jennifer A. Evans,T. Apinjoh,A. Macharia,Carolyne M. Ndila,C. Newton,N. Peshu,S. Uyoga,A. Manjurano,David Kachala,Vysaul B. Nyirongo,D. Mead,Eleanor Drury,S. Auburn,S. Campino,B. MacInnis,J. Stalker,Emma V. Gray,C. Hubbart,Anna E. Jeffreys,K. Rowlands,Alieu Mendy,R. Craik,Kathryn E. Fitzpatrick,S. Molloy,Lee Hart,Robert Hutton,A. Kerasidou,Kimberly J. Johnson
Published 2015 in Nature
ABSTRACT
PUBLICATION RECORD
- Publication year
2015
- Venue
Nature
- Publication date
2015-09-30
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- ancient balancing selection
An evolutionary process that maintains genetic diversity over long time spans.
Aliases: balancing selection
- blood group o
The ABO blood-group state lacking A and B antigens on red blood cells.
Aliases: group O
- genome-wide association study
A genome-wide scan for genetic variants associated with a phenotype across a large cohort.
Aliases: GWAS
- glycophorin genes
A cluster of genes encoding erythrocyte membrane glycoproteins that act as invasion receptors for Plasmodium falciparum.
Aliases: glycophorins
- haplotype
A set of genetic variants inherited together at a genomic region.
- malaria resistance locus
A genomic region in the human genome associated with resistance to malaria.
Aliases: novel malaria resistance locus
- severe malaria
Life-threatening Plasmodium falciparum infection used as the disease phenotype in the association analysis.
Aliases: life-threatening Plasmodium falciparum infection
REFERENCES
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