Evidence map›Paper›PMID 24704073›Full record

ArticleCurrent biology : CB2014

Tracing pastoralist migrations to southern Africa with lactase persistence alleles.

Enrico Macholdt, Vera Lede, Chiara Barbieri, Sununguko W Mpoloka, Hua Chen, Montgomery Slatkin, Brigitte Pakendorf, Mark Stoneking

Abstract readHistorical Article
In one paragraph

Article in Current biology : CB, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
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

38 citing papers in PubMed.

  1. Article
  2. Review
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  4. Article
  5. Global impact of micronutrients in modern human evolution.American journal of human genetics · 2025
    Article
  6. Neanderthal adaptive introgression shapedProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. 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.

Enrico MacholdtDepartment of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany.
Vera LedeDepartment of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany.
Chiara BarbieriDepartment of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany.
Sununguko W MpolokaDepartment of Biological Sciences, University of Botswana, Gaborone, Botswana.
Hua ChenDepartment of Integrative Biology, University of California, Berkeley, Berkeley, CA 94720, USA.
Montgomery SlatkinDepartment of Integrative Biology, University of California, Berkeley, Berkeley, CA 94720, USA.
Brigitte PakendorfLaboratoire Dynamique du Langage, UMR5596, CNRS and Université Lyon Lumière 2, 69007 Lyon, France. Electronic address: brigitte.pakendorf@cnrs.fr.
Mark StonekingDepartment of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. Electronic address: stoneking@eva.mpg.de.

Funding

MODELS OF COMPLEX GENETIC SYSTEMSR01GM040282 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI SLATKIN, MONTGOMERY WILSON · 1988 to 2017
$4.4M
NIGMS NIH HHS R01 GM040282NIGMS NIH HHS R01-GM40282
6 · The paper itself

Abstract

Although southern African Khoisan populations are often assumed to have remained largely isolated during prehistory, there is growing evidence for a migration of pastoralists from eastern Africa some 2,000 years ago, prior to the arrival of Bantu-speaking populations in southern Africa. Eastern Africa harbors distinctive lactase persistence (LP) alleles, and therefore LP alleles in southern African populations may be derived from this eastern African pastoralist migration. We sequenced the lactase enhancer region in 457 individuals from 18 Khoisan and seven Bantu-speaking groups from Botswana, Namibia, and Zambia and additionally genotyped four short tandem repeat (STR) loci that flank the lactase enhancer region. We found nine single-nucleotide polymorphisms, of which the most frequent is -14010(∗)C, which was previously found to be associated with LP in Kenya and Tanzania and to exhibit a strong signal of positive selection. This allele occurs in significantly higher frequency in pastoralist groups and in Khoe-speaking groups in our study, supporting the hypothesis of a migration of eastern African pastoralists that was primarily associated with Khoe speakers. Moreover, we find a signal of ongoing positive selection in all three pastoralist groups in our study, as well as (surprisingly) in two foraging groups.

Indexed as

Selection, GeneticAfrica, SouthernBlack PeopleEthnicityGene FrequencyGenetics, PopulationGenotypeGeographyHaplotypesHistory, AncientHuman MigrationHumansLactaseMicrosatellite RepeatsPolymorphism, Single NucleotideLactase

Identifiers

PMID24704073
PMCPMC5102062

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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.