Evidence map›Paper›PMID 17066296›Full record

ArticleHuman genetics2007

Admixture in Mexico City: implications for admixture mapping of type 2 diabetes genetic risk factors.

Veronica L Martinez-Marignac, Adan Valladares, Emily Cameron, Andrea Chan, Arjuna Perera, Rachel Globus-Goldberg, Niels Wacher, Jesús Kumate, Paul McKeigue, David O'Donnell and 3 more

Abstract read
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In one paragraph

Article in Human genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing 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

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

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Article
  8. Variants inInternational journal of molecular sciences · 2026
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  9. Article
  10. Article
  11. Article
  12. Article
  13. Association ofFrontiers in genetics · 2020
    Article
  14. Article
  15. Review
  16. BLK and BANK1 polymorphisms and interactions are associated in Mexican patients with systemic lupus erythematosus.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2019
    Article
  17. Article
  18. Genetic susceptibility to infectious diseases: Current status and future perspectives from genome-wide approaches.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2018
    Review
  19. Article
  20. Analysis of admixture proportions in seven geographical regions of the state of Guerrero, Mexico.American journal of human biology : the official journal of the Human Biology Council · 2017
    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

13 authors.

Veronica L Martinez-MarignacDepartment of Anthropology, University of Toronto at Mississauga, 3359 Mississauga Rd. Room 4026, South Bldg, L5L 1C6, Mississauga, ON, Canada, eparra@utm.utoronto.ca.
Adan Valladares
Emily Cameron
Andrea Chan
Arjuna Perera
Rachel Globus-Goldberg
Niels Wacher
Jesús Kumate
Paul McKeigue
David O'Donnell
Mark D Shriver
Miguel Cruz
Esteban J Parra

Funding

CONSTRUCTION AND APPLICATION OF A US ADMIXTURE MAPR01HG002154 · NHGRI · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI SHRIVER, MARK D · 1999 to 2006
$1.7M
NHGRI NIH HHS HG02154
6 · The paper itself

Abstract

Admixture mapping is a recently developed method for identifying genetic risk factors involved in complex traits or diseases showing prevalence differences between major continental groups. Type 2 diabetes (T2D) is at least twice as prevalent in Native American populations as in populations of European ancestry, so admixture mapping is well suited to study the genetic basis of this complex disease. We have characterized the admixture proportions in a sample of 286 unrelated T2D patients and 275 controls from Mexico City and we discuss the implications of the results for admixture mapping studies. Admixture proportions were estimated using 69 autosomal ancestry-informative markers (AIMs). Maternal and paternal contributions were estimated from geographically informative mtDNA and Y-specific polymorphisms. The average proportions of Native American, European and, West African admixture were estimated as 65, 30, and 5%, respectively. The contributions of Native American ancestors to maternal and paternal lineages were estimated as 90 and 40%, respectively. In a logistic model with higher educational status as dependent variable, the odds ratio for higher educational status associated with an increase from 0 to 1 in European admixture proportions was 9.4 (95%, credible interval 3.8-22.6). This association of socioeconomic status with individual admixture proportion shows that genetic stratification in this population is paralleled, and possibly maintained, by socioeconomic stratification. The effective number of generations back to unadmixed ancestors was 6.7 (95% CI 5.7-8.0), from which we can estimate that genome-wide admixture mapping will require typing about 1,400 evenly distributed AIMs to localize genes underlying disease risk between populations of European and Native American ancestry. Sample sizes of about 2,000 cases will be required to detect any locus that contributes an ancestry risk ratio of at least 1.5.

Indexed as

Africa, WesternAllelesBase SequenceBlack PeopleCase-Control StudiesChromosome MappingChromosomes, Human, YDiabetes Mellitus, Type 2DNA, MitochondrialDNA PrimersFemaleGene FlowGene FrequencyGenetic MarkersGenetic Predisposition to DiseaseHumansDNA, MitochondrialDNA PrimersGenetic Markers

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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.