Multiple instances of ancient balancing selection shared between humans and chimpanzees

Ellen M. Leffler, Ziyue Gao, Susanne Pfeifer, Laure Ségurel, Adam Auton, Oliver Venn, Rory Bowden, Ronald Bontrop, Jeffrey D. Wall, Guy Sella, Peter Donnelly, Gilean McVean, Molly Przeworski

Research output: Contribution to journalArticlepeer-review

200 Scopus citations


Instances in which natural selection maintains genetic variation in a population over millions of years are thought to be extremely rare. We conducted a genome-wide scan for long-lived balancing selection by looking for combinations of SNPs shared between humans and chimpanzees. In addition to the major histocompatibility complex, we identified 125 regions in which the same haplotypes are segregating in the two species, all but two of which are noncoding. In six cases, there is evidence for an ancestral polymorphism that persisted to the present in humans and chimpanzees. Regions with shared haplotypes are significantly enriched for membrane glycoproteins, and a similar trend is seen among shared coding polymorphisms. These findings indicate that ancient balancing selection has shaped human variation and point to genes involved in host-pathogen interactions as common targets.

Original languageEnglish (US)
Pages (from-to)1578-1582
Number of pages5
Issue number6127
StatePublished - Mar 29 2013
Externally publishedYes

ASJC Scopus subject areas

  • General


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