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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Genet+Epidemiol
2015 ; 39
(3
): 197-206
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Informed genome-wide association analysis with family history as a secondary
phenotype identifies novel loci of lung cancer
#MMPMID25644374
Poirier JG
; Brennan P
; McKay JD
; Spitz MR
; Bickeböller H
; Risch A
; Liu G
; Le Marchand L
; Tworoger S
; McLaughlin J
; Rosenberger A
; Heinrich J
; Brüske I
; Muley T
; Henderson BE
; Wilkens LR
; Zong X
; Li Y
; Hao K
; Timens W
; Bossé Y
; Sin DD
; Obeidat M
; Amos CI
; Hung RJ
Genet Epidemiol
2015[Mar]; 39
(3
): 197-206
PMID25644374
show ga
Lung cancer is the leading cause of cancer death worldwide. Although several
genetic variants associated with lung cancer have been identified in the past,
stringent selection criteria of genome-wide association studies (GWAS) can lead
to missed variants. The objective of this study was to uncover missed variants by
using the known association between lung cancer and first-degree family history
of lung cancer to enrich the variant prioritization for lung cancer
susceptibility regions. In this two-stage GWAS study, we first selected a list of
variants associated with both lung cancer and family history of lung cancer in
four GWAS (3,953 cases, 4,730 controls), then replicated our findings for 30
variants in a meta-analysis of four additional studies (7,510 cases, 7,476
controls). The top ranked genetic variant rs12415204 in chr10q23.33 encoding
FFAR4 in the Discovery set was validated in the Replication set with an overall
OR of 1.09 (95% CI=1.04, 1.14, P=1.63×10(-4)). When combining the two stages of
the study, the strongest association was found in rs1158970 at Ch4p15.2 encoding
KCNIP4 with an OR of 0.89 (95% CI=0.85, 0.94, P=9.64×10(-6)). We performed a
stratified analysis of rs12415204 and rs1158970 across all eight studies by age,
gender, smoking status, and histology, and found consistent results across
strata. Four of the 30 replicated variants act as expression quantitative trait
loci (eQTL) sites in 1,111 nontumor lung tissues and meet the genome-wide 10% FDR
threshold.