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Table 3 Relative risk estimates for REN and AGT interactions:

From: Maternal angiotensinogen (AGT) haplotypes, fetal renin (REN) haplotypes and risk of preeclampsia; estimation of gene-gene interaction from family-triad data

A: Relative risk estimates (95% CI; p-value) for fetal RENhaplotypes when mothers carry the protective AGThaplotype C-T-A (n = 57 family-triads)

RENhaplotype

Frequency (%)

Single dose

Double dose

A-G-C

61.3

0.62 (0.22-1.71); 0.36

0.33 (0.09-1.19); 0.09

A-t-C

29.4

1.03 (0.38-2.82); 0.96

0.62 (0.14-2.79); 0.54

c-G-t

8.9

1.29 (0.50-3.25); 0.59

Not estimable

B: Relative risk estimates (95% CI; p-value) for fetal REN haplotypes when mothers do not carry the protective AGT haplotype C-T-A (n = 27 family-triads)

REN haplotype

Frequency (%)

Single dose

Double dose

A-G-C

55.2

1.53 (0.16-14.90); 0.71

1.0 (0.08-12.4); 0.99

A-t-C

38.0

2.40 (0.24-24.10); 0.46

0.89 (0.06-15.20); 0.93

c-G-t

5.8

0.60 (0.09-4.14); 0.60

Not estimable

  1. SNP order for REN: rs5705 (A/c), rs1464816 (G/t) and rs3795575 (C/t)