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Table 6 Additive effects of genetic variations in NFE2L2 and KEAP1 on the longitudinal course of FEV1

From: Level and course of FEV1 in relation to polymorphisms in NFE2L2 and KEAP1 in the general population

Gene

Variation

Doetinchem cohort

Vlagtwedde-Vlaardingen cohort

Pooled cohorts

  

B [ml/yr]

95% CI

p

B [ml/yr]

95% CI

p

p

NFE2L2

rs6726395

0.2

-2.5 – 2.9

0.88

0.1

-1.5 – 1.7

0.90

0.873

 

rs4243387

-1.2

-5.6 – 3.2

0.60

-1.9

-4.8 – 1.1

0.21

0.106

 

rs1806649

1.5

-1.6 – 4.5

0.35

1.0

-1.0 – 3.0

0.31

0.151

 

rs13001694

0.0

-2.7 – 2.7

1.00

0.7

-1.0 – 2.4

0.40

0.337

 

rs2364723

-0.3

-3.2 – 2.6

0.84

-0.6

-2.3 – 1.1

0.50

0.368

 

Haplotype C

-0.3

-3.8 – 3.1

0.85

0.9

-1.3 – 3.1

0.40

0.401

 

Haplotype D

-2.3

-6.6 – 2.0

0.29

0.0

-2.6 – 2.5

0.98

0.627

KEAP1

rs1048290

-2.0

-4.7 – 0.8

0.16

1.0

-0.8 – 2.8

0.28

0.907

 

rs11085735

3.6

-2.1 – 9.4

0.22

-0.7

-4.7 – 3.3

0.72

0.774

 

rs1048287

-1.8

-5.9 – 2.4

0.41

-0.4

-3.1 – 2.4

0.80

0.614

 

Haplotype A

-1.3

-4.0 – 1.4

0.35

0.8

-1.0 – 2.5

0.38

0.817

 

Haplotype B

-1.6

-4.6 – 1.4

0.30

1.5

-0.5 – 3.4

0.14

0.573

  1. Parameter estimate B (corresponding to the "per-allele" effect on the change in FEV1 in ml/yr), its 95% Confidence Interval and p value are estimated for genetic variations in NFE2L2 and KEAP1 using Linear Mixed Effect model analysis on FEV1 level adjusted for genotypes (coded: 0 = homozygotes wild type, 1 = heterozygotes, 2 = homozygotes mutant), age at entry, sex, packyears smoked, FEV1 level at baseline (and their interaction with time) and correlation of lung function measurements within subjects (random factor assigned to the intercept and time) and cohort binary variable for the pooled cohorts analysis.
  2. NFE2L2 = Nuclear Factor (Erythroid-derived 2)-Like 2
  3. KEAP1 = Kelch-like ECH-associated protein-1
  4. FEV1 = Forced Expiratory Volume in 1 second
  5. CI = Confidence Interval