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Table 1 Maternal and Infant HFE and TF Genotype Frequencies

From: HFE Gene Variants Modify the Association between Maternal Lead Burden and Infant Birthweight: A Prospective Birth Cohort Study in Mexico City, Mexico

Mother

Infant

Genotype

Number

%

Genotype

Number

%

HFE (C282Y)

  

HFE (C282Y)

  

C282 Wildtype (CC)

523

98.1

C282 Wildtype (CC)

378

96.9

C282Y Heterozygous (CY)

10

1.9

C282Y Heterozygous (CY)

10

3.1

C282Y Homozygous (YY)

0

0

C282Y Homozygous (YY)

0

0

Hardy-Weinberg equilibrium: χ2 = 0.05, p = 0.83

Hardy-Weinberg equilibrium: χ2 = 0.10, p = 0.76

HFE (H63D)

  

HFE (H63D)

  

H63 Wildtype (HH)

452

85.0

H63 Wildtype (HH)

319

82.2

H63 D Heterozygous (HD)

77

14.5

H63 D Heterozygous (HD)

65

16.8

H63 D Homozygous (DD)

3

0.5

H63 D Homozygous (DD)

4

1.0

Hardy-Weinberg equilibrium: χ2 = 0.02, p = 0.87

Hardy-Weinberg equilibrium: χ2 = 0.11, p = 0.74

TF (P570S)

  

TF (P570S)

  

P570 Wildtype (PP)

429

80.9

P570 Wildtype (PP)

319

82.0

P570 S Heterozygous (PS)

100

18.9

P570 S Heterozygous (PS)

68

17.5

P570 S Homozygous (SS)

1

0.2

P570 S Homozygous (SS)

2

0.5

Hardy-Weinberg equilibrium: χ2 = 3.81, p = 0.05

Hardy-Weinberg equilibrium: χ2 = 0.65, p = 0.42