Evidence map›Paper›PMID 32707084›Full record

ArticleAmerican journal of human genetics2020

Genetic Consequences of the Transatlantic Slave Trade in the Americas.

Steven J Micheletti, Kasia Bryc, Samantha G Ancona Esselmann, William A Freyman, Meghan E Moreno, G David Poznik, Anjali J Shastri, 23andMe Research Team, Sandra Beleza, Joanna L Mountain

Abstract read
In one paragraph

Article in American journal of human genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 4 pooled it
–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

75 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Estimating human mobility in Holocene Western Eurasia with large-scale ancient genomic data.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Prevalence and Outcomes of p.Val142IleCirculation. Genomic and precision medicine · 2021
    Pooled it
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Genetic and linguistic comparisons reveal complex sex-biased transmission of language features.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  19. Review
  20. Article

15 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Steven J Micheletti23andMe, Inc., Sunnyvale, CA 94043, USA. Electronic address: smicheletti@ucdavis.edu.
Kasia Bryc23andMe, Inc., Sunnyvale, CA 94043, USA.
Samantha G Ancona Esselmann23andMe, Inc., Sunnyvale, CA 94043, USA.
William A Freyman23andMe, Inc., Sunnyvale, CA 94043, USA.
Meghan E Moreno23andMe, Inc., Sunnyvale, CA 94043, USA.
G David Poznik23andMe, Inc., Sunnyvale, CA 94043, USA.
Anjali J Shastri23andMe, Inc., Sunnyvale, CA 94043, USA.
23andMe Research Team23andMe, Inc., Sunnyvale, CA 94043, USA.
Sandra BelezaUniversity of Leicester, Leicester LE1 7RH, UK.
Joanna L Mountain23andMe, Inc., Sunnyvale, CA 94043, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

According to historical records of transatlantic slavery, traders forcibly deported an estimated 12.5 million people from ports along the Atlantic coastline of Africa between the 16th and 19th centuries, with global impacts reaching to the present day, more than a century and a half after slavery's abolition. Such records have fueled a broad understanding of the forced migration from Africa to the Americas yet remain underexplored in concert with genetic data. Here, we analyzed genotype array data from 50,281 research participants, which-combined with historical shipping documents-illustrate that the current genetic landscape of the Americas is largely concordant with expectations derived from documentation of slave voyages. For instance, genetic connections between people in slave trading regions of Africa and disembarkation regions of the Americas generally mirror the proportion of individuals forcibly moved between those regions. While some discordances can be explained by additional records of deportations within the Americas, other discordances yield insights into variable survival rates and timing of arrival of enslaved people from specific regions of Africa. Furthermore, the greater contribution of African women to the gene pool compared to African men varies across the Americas, consistent with literature documenting regional differences in slavery practices. This investigation of the transatlantic slave trade, which is broad in scope in terms of both datasets and analyses, establishes genetic links between individuals in the Americas and populations across Atlantic Africa, yielding a more comprehensive understanding of the African roots of peoples of the Americas.

Indexed as

AfricaAmericasBlack PeopleEnslaved PersonsEuropeFemaleHumansMalePolymorphism, Single NucleotideadmixtureAfricaAmericasancestrygeneticshistoryidentity by descentmigrationpopulation geneticsslave trade

Identifiers

PMID32707084
PMCPMC7413858

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.