Background
Methods
Subjects
Data collection
Case identification
Statistical analysis
Comparison to published asthma GWAS
Results
Subject classification
Childhood Asthma | Never Asthma | P-value | |
---|---|---|---|
N = 730
|
N = 7493
| ||
Male gender (%)a | 388 (53%) | 4255 (57%) | 0.06 |
Mean age, year (SD)c | 58 (9) | 60 (9) | < 0.001 |
Non-Hispanic white (%)a | 391 (54%) | 5075 (68%) | < 0.001 |
African American (%)a | 339 (46%) | 2418 (32%) | < 0.001 |
Pack-years of smoking (SD)b | 43 (25) | 44 (25) | 0.09 |
Current smoking (%)a | 410 (56%) | 4041 (54%) | 0.26 |
History of hay fever (%)a | 385 (53%) | 1727 (23%) | < 0.001 |
Subject characteristics
Childhood | Never | Impact of Childhood Asthma | |||
---|---|---|---|---|---|
Asthma | Asthma | ||||
N = 730
|
N = 7493
| OR | 95% CI | P-valuea | |
COPD (%)b,d, e | 341 (47%) | 2303 (31%) | 3.42 | (2.81, 4.18) | < 0.001 |
β | SE | P-value | |||
FEV1 post-bronchodilator % predicted (SD)c,d | 69% (25) | 80% (26) | −10.44 | 0.92 | < 0.001 |
FVC post-bronchodilator % predicted (SD)c,d | 83% (19) | 89% (18) | −6.01 | 0.68 | < 0.001 |
FEV1/FVC post-bronchodilator (SD)c,d,e,f | 0.64 (0.16) | 0.68 (0.16) | −0.06 | 0.01 | < 0.001 |
GWAS
Locus
|
SNP
|
Effect Allele
|
OR
|
Rsq
|
Freq (%)
|
P-value
b,d
|
Gene Symbol
|
Gene Name
| ||
NHW
a
| 9q32 | rs59289606 | A | 2.06 | 0.38 | 20% | 4.82E-08 |
KIAA1958
| ||
(8,900,203 SNPs) | 5p13.3 | rs439399 | C | 1.52 | 0.99 | 22% | 3.90E-07 |
PDZD2
| PDZ domain containing 2 | |
AA
a
| 12q13.13 | rs7315121 | T | 2.90 | 0.45 | 7% | 1.75E-07 |
FLJ12825
| uncharacterized LOC440101 | |
(15,374,350 SNPs) | 7p21.3 | rs56317450 | A | 2.11 | 0.79 | 8% | 4.94E-07 |
PHF14
| PHD finger protein 14 | |
Locus
|
SNP
|
Effect Allele
|
OR
|
Rsq
NHW, AA
|
Freq (%)
NHW, AA
|
I
2
|
P-value
c,d
|
Gene Symbol
|
Gene Name
| |
Meta-analysis
(7,658,992 SNPs) | 3q25.32-q25.33 | rs4679858 | G | 1.48 | 0.99, 0.98 | 14%, 12% | 0 | 2.39E-07 |
SCHIP1
IQCJ-SCHIP1
| schwannomin interacting protein 1 & the readthrough |
Association testing of established asthma variants
NHW
a
|
Gene
|
SNP
|
Locus
|
Effect Allele
|
OR
|
Rsq
|
Freq (%)
|
P-value
b,d
|
Adj P-value
e
|
(385 cases, 4979 controls)
|
IL1RL1
|
rs10197862
f
|
2q12.1
|
A
|
1.45
|
1.00
| 0.85 |
0.002
|
0.011
|
TSLP
| rs1837253g | 5q22.1 | T | 1.07 | 0.75 | 0.414 | 1.000 | ||
RAD50
| rs2244012f | 5q31.1 | G | 1.05 | 0.78 | 0.579 | 1.000 | ||
IL13
| rs1295686f | 5q31.1 | T | 1.22 | 0.80 | 0.026 | 0.180 | ||
C11orf30-LRRC32
| rs7130588g | 11q13.5 | G | 1.23 | 0.64 | 0.008 | 0.054 | ||
GSDMB
| rs2305480f | 17q21.1 | G | 1.22 | 0.44 | 0.009 | 0.060 | ||
GSDMA
| rs3894194f | 17q21.1 | A | 1.18 | 0.94 | 0.47 | 0.029 | 0.201 | |
AA
a
|
Gene
|
SNP
|
Locus
|
Effect Allele
|
OR
|
Rsq
|
Freq (%)
|
P-value
b,d
|
Adj P-value
e
|
(325 cases, 2342 controls)
|
IL1RL1
| rs10197862f | 2q12.1 | A | 1.10 | 0.98 | 0.74 | 0.344 | 1.000 |
TSLP
| rs1837253g | 5q22.1 | C | 1.11 | 0.28 | 0.283 | 1.000 | ||
RAD50
| rs2244012f | 5q31.1 | G | 1.05 | 0.57 | 0.603 | 1.000 | ||
IL13
| rs1295686f | 5q31.1 | T | 1.16 | 0.64 | 0.102 | 0.717 | ||
C11orf30-LRRC32
| rs7130588g | 11q13.5 | G | 1.23 | 0.80 | 0.035 | 0.247 | ||
GSDMB
| rs2305480f | 17q21.1 | G | 1.03 | 0.13 | 0.817 | 1.000 | ||
GSDMA
| rs3894194f | 17q21.1 | G | 1.02 | 0.88 | 0.69 | 0.846 | 1.000 | |
Meta-analysis
a
|
Gene
|
SNP
|
Locus
|
Effect Allele
|
OR
|
I
2
|
P-value
c,d
|
Adj P-value
e
| |
(710 cases, 7321 controls)
|
IL1RL1
|
rs10197862
f
|
2q12.1
|
A
|
1.23
|
70
|
0.006
|
0.042
| |
TSLP
| rs1837253g | 5q22.1 | C | 1.01 | 45 | 0.910 | 1.000 | ||
RAD50
| rs2244012f | 5q31.1 | G | 1.05 | 0 | 0.447 | 1.000 | ||
IL13
|
rs1295686
f
|
5q31.1
|
T
|
1.19
|
0
|
0.006
|
0.043
| ||
C11orf30-LRRC32
|
rs7130588
g
|
11q13.5
|
G
|
1.23
|
0
|
0.001
|
0.005
| ||
GSDMB
| rs2305480f | 17q21.1 | G | 1.17 | 27 | 0.018 | 0.125 | ||
GSDMA
| rs3894194f | 17q21.1 | A | 1.10 | 57 | 0.113 | 0.794 |