title: Geographic and racial/ethnic differences in HFE mutation frequencies in the Hemochromatosis and Iron Overload Screening (HEIRS) Study.
abstract: OBJECTIVE
  To assess geographic differences in the frequencies of HFE C282Y and H63D genotypes in six racial/ethnic groups recruited in the Hemochromatosis and Iron Overload Screening (HEIRS) Study.
  
  
  METHODS
  HFE C282Y and H63D genotypes of 97,551 participants, ages > or = 25 years, who reported that they belonged to one of six racial/ethnic groups, were analyzed. HFE genotype frequencies were compared among the racial/ethnic groups and among the HEIRS Study field centers within each racial/ethnic group.
  
  
  RESULTS
  The distribution of HFE C282Y and H63D genotypes differed among racial/ethnic groups (P<.0001) and among field centers in Hispanics, Asians, Whites, and Blacks (each P<.05). Genotype frequencies were similar among field centers in Native Americans and Pacific Islanders. Frequencies of C282Y and H63D genotypes were greatest in Whites. The lowest frequencies of C282Y genotypes were observed in Asians; Blacks had the lowest H63D genotype frequencies and the highest frequency of the wild-type genotype. Among racial/ethnic groups, Hispanics had the greatest variation in HFE genotypes across geographic regions.
  
  
  CONCLUSIONS
  HFE C282Y and H63D genotype frequencies vary significantly between racial/ethnic groups and within some racial/ethnic groups across geographic regions.
authors.affiliation: Department of Microbiology, University of Alabama at Birmingham 35209-0005, USA. acton@uab.edu
authors.forename: Ronald T
authors.initials: RT
authors.lastname: Acton
authors.forename: James C
authors.initials: JC
authors.lastname: Barton
authors.forename: Beverly M
authors.initials: BM
authors.lastname: Snively
authors.forename: Christine E
authors.initials: CE
authors.lastname: McLaren
authors.forename: Paul C
authors.initials: PC
authors.lastname: Adams
authors.forename: Emily L
authors.initials: EL
authors.lastname: Harris
authors.forename: Mark R
authors.initials: MR
authors.lastname: Speechley
authors.forename: Gordon D
authors.initials: GD
authors.lastname: McLaren
authors.forename: Fitzroy W
authors.initials: FW
authors.lastname: Dawkins
authors.forename: Catherine
authors.initials: C
authors.lastname: Leiendecker-Foster
authors.forename: Joan L
authors.initials: JL
authors.lastname: Holup
authors.forename: Aarthi
authors.initials: A
authors.lastname: Balasubramanyam
mesh_terms: D000328:Adult; D044466:Asian People / Q000235:genetics / Q000706:statistics & numerical data; D044383:Black People / Q000235:genetics / Q000706:statistics & numerical data; D005006:Ethnicity / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005820:Genetic Testing; D005838:Genotype; D006432:Hemochromatosis / Q000453:epidemiology* / Q000208:ethnology / Q000235:genetics*; D000071020:Hemochromatosis Protein; D006630:Hispanic or Latino / Q000235:genetics / Q000706:statistics & numerical data; D015395:Histocompatibility Antigens Class I / Q000235:genetics*; D006801:Humans; D007198:Indians, North American / Q000235:genetics / Q000706:statistics & numerical data; D019190:Iron Overload / Q000453:epidemiology* / Q000208:ethnology / Q000235:genetics*; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D009154:Mutation; D044468:Native Hawaiian or Pacific Islander / Q000235:genetics / Q000706:statistics & numerical data; D009656:North America / Q000453:epidemiology; D044469:Racial Groups / Q000235:genetics*; D044465:White People / Q000235:genetics / Q000706:statistics & numerical data
chemical_list: C103673:HFE protein, human; D000071020:Hemochromatosis Protein; D015395:Histocompatibility Antigens Class I; D008565:Membrane Proteins