title: Comparing genetic ancestry and self-reported race/ethnicity in a multiethnic population in New York City.
abstract: Self-reported race/ethnicity is frequently used in epidemiological studies to assess an individual's background origin. However, in admixed populations such as Hispanic, self-reported race/ethnicity may not accurately represent them genetically because they are admixed with European, African and Native American ancestry. We estimated the proportions of genetic admixture in an ethnically diverse population of 396 mothers and 188 of their children with 35 ancestry informative markers (AIMs) using the STRUCTURE version 2.2 program. The majority of the markers showed significant deviation from Hardy-Weinberg equilibrium in our study population. In mothers self-identified as Black and White, the imputed ancestry proportions were 77.6% African and 75.1% European respectively, while the racial composition among self-identified Hispanics was 29.2% European, 26.0% African, and 44.8% Native American. We also investigated the utility of AIMs by showing the improved fitness of models in paraoxanase-1 genotype-phenotype associations after incorporating AIMs; however, the improvement was moderate at best. In summary, a minimal set of 35 AIMs is sufficient to detect population stratification and estimate the proportion of individual genetic admixture; however, the utility of these markers remains questionable.
authors.affiliation: Department of Preventive Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA.
authors.forename: Yin Leng
authors.initials: YL
authors.lastname: Lee
authors.forename: Susan
authors.initials: S
authors.lastname: Teitelbaum
authors.forename: Mary S
authors.initials: MS
authors.lastname: Wolff
authors.forename: James G
authors.initials: JG
authors.lastname: Wetmur
authors.forename: Jia
authors.initials: J
authors.lastname: Chen
mesh_terms: D044383:Black People / Q000208:ethnology / Q000235:genetics; D002648:Child; D005006:Ethnicity / Q000208:ethnology / Q000235:genetics*; D005260:Female; D056726:Genetic Association Studies; D005819:Genetic Markers; D006630:Hispanic or Latino / Q000208:ethnology / Q000235:genetics; D006801:Humans; D007198:Indians, North American / Q000208:ethnology / Q000235:genetics; D009035:Mothers / Q000706:statistics & numerical data; D009519:New York City / Q000208:ethnology; D044382:Population Groups / Q000208:ethnology / Q000235:genetics*; D044469:Racial Groups / Q000208:ethnology / Q000235:genetics*; D057566:Self Report; D014481:United States / Q000208:ethnology; D044465:White People / Q000208:ethnology / Q000235:genetics; D001741:Black or African American
chemical_list: D005819:Genetic Markers