Table 3 Associations of the two top SNPs with PA based on various definitions in 2,197 discovery samples of European ancestry.

From: Genome-wide association study identifies peanut allergy-specific loci and evidence of epigenetic mediation in US children

PA definitions

Cases

rs7192*

rs9275596

  

OR

95% CI

P GEE

P MQLS §

OR

95% CI

P GEE

P MQLS §

CR, plus psIgE ≥0.1 kU l−1 or SPT ≥3 mm

316

1.7

1.4–2.1

1.7 × 10−7

5.5 × 10−8

1.7

1.4–2.1

9.6 × 10−8

6.8 × 10−10

CR in 2 h, plus psIgE ≥0.1 kU l−1 or SPT ≥3 mm

286

1.8

1.4–2.2

1.5 × 10−7

6.7 × 10−8

1.8

1.4–2.2

1.8 × 10−7

1.9 × 10−9

CR in 2 h, plus psIgE ≥0.35 kU l−1 or SPT ≥3 mm

278

1.8

1.4–2.2

2.0 × 10−7

1.0 × 10−7

1.8

1.4–2.2

1.8 × 10−7

2.5 × 10−9

CR in 2 h, plus psIgE ≥0.35 kU l−1 or SPT ≥5 mm

276

1.7

1.4–2.2

4.2 × 10−7

3.6 × 10−7

1.7

1.4–2.2

3.0 × 10−7

6.7 × 10−9

CR in 2 h, plus psIgE ≥15 kU l−1 or SPT ≥8 mm

216

1.8

1.4–2.3

7.5 × 10−7

1.4 × 10−6

1.8

1.4–2.3

7.0 × 10−7

8.9 × 10−8

CR in 2 h, plus psIgE ≥57 kU l−1 or SPT ≥8 mm

187

1.8

1.4–2.3

4.2 × 10−6

2.3 × 10−5

1.8

1.4–2.2

9.2 × 10−6

4.2 × 10−6

  1. CI, confidence interval; CR, clinical allergic reaction to peanut ingestion; GEE, generalized estimating equation; MQLS, modified quasi-likelihood score; OR, odds ratio; PA, peanut allergy; psIgE, peanut-specific IgE; SNP, single-nucleotide polymorphism; SPT, skin prick test.
  2. *Using the minor allele (T allele) as the effective allele and the major allele (G allele) as the reference allele.
  3. Using the minor allele (C allele) as the effective allele and the major allele (T allele) as the reference allele.
  4. The GEE model was applied to estimate the effect size of each SNP (additive genetic model) on the risk of PA in PA cases versus 733 non-PA children, with adjustment for age and gender, and controlling for within-family relationships.
  5. §The MQLS test was applied to estimate the P-value by comparing PA cases, 144 non-allergic, non-sensitized normal controls and 1,737 controls of uncertain phenotype.