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. 2019 Aug;14(8):1360-1369.
doi: 10.1016/j.jtho.2019.04.008. Epub 2019 Apr 19.

Lung Cancer Risk in Never-Smokers of European Descent is Associated With Genetic Variation in the 5p15.33 TERT-CLPTM1Ll Region

Rayjean J Hung  1 Margaret R Spitz  2 Richard S Houlston  3 Ann G Schwartz  4 John K Field  5 Jun Ying  6 Yafang Li  2 Younghun Han  2 Xuemei Ji  7 Wei Chen  8 Xifeng Wu  8 Ivan P Gorlov  7 Jie Na  9 Mariza de Andrade  9 Geoffrey Liu  10 Yonathan Brhane  1 Nancy Diao  11 Angela Wenzlaff  4 Michael P A Davies  5 Triantafillos Liloglou  5 Maria Timofeeva  12 Thomas Muley  13 Hedy Rennert  14 Walid Saliba  14 Bríd M Ryan  15 Elise Bowman  15 Juan-Miguel Barros-Dios  16 Mónica Pérez-Ríos  16 Hal Morgenstern  17 Shanbeh Zienolddiny  18 Vidar Skaug  18 Donatella Ugolini  19 Stefano Bonassi  20 Erik H F M van der Heijden  21 Adonina Tardon  22 Stig E Bojesen  23 Maria Teresa Landi  24 Mattias Johansson  25 Heike Bickeböller  26 Susanne Arnold  27 Loic Le Marchand  28 Olle Melander  29 Angeline Andrew  30 Kjell Grankvist  31 Neil Caporaso  24 M Dawn Teare  32 Matthew B Schabath  33 Melinda C Aldrich  34 Lambertus A Kiemeney  21 H-Erich Wichmann  35 Philip Lazarus  36 Jose Mayordomo  37 Monica Neri  38 Aage Haugen  18 Zuo-Feng Zhang  39 Alberto Ruano-Raviña  16 Hermann Brenner  40 Curtis C Harris  15 Irene Orlow  41 Gadi Rennert  14 Angela Risch  42 Paul Brennan  25 David C Christiani  11 Christopher I Amos  2 Ping Yang  43 Olga Y Gorlova  44
Affiliations

Lung Cancer Risk in Never-Smokers of European Descent is Associated With Genetic Variation in the 5p15.33 TERT-CLPTM1Ll Region

Rayjean J Hung et al. J Thorac Oncol. 2019 Aug.

Abstract

Introduction: Inherited susceptibility to lung cancer risk in never-smokers is poorly understood. The major reason for this gap in knowledge is that this disease is relatively uncommon (except in Asians), making it difficult to assemble an adequate study sample. In this study we conducted a genome-wide association study on the largest, to date, set of European-descent never-smokers with lung cancer.

Methods: We conducted a two-phase (discovery and replication) genome-wide association study in never-smokers of European descent. We further augmented the sample by performing a meta-analysis with never-smokers from the recent OncoArray study, which resulted in a total of 3636 cases and 6295 controls. We also compare our findings with those in smokers with lung cancer.

Results: We detected three genome-wide statistically significant single nucleotide polymorphisms rs31490 (odds ratio [OR]: 0.769, 95% confidence interval [CI]: 0.722-0.820; p value 5.31 × 10-16), rs380286 (OR: 0.770, 95% CI: 0.723-0.820; p value 4.32 × 10-16), and rs4975616 (OR: 0.778, 95% CI: 0.730-0.829; p value 1.04 × 10-14). All three mapped to Chromosome 5 CLPTM1L-TERT region, previously shown to be associated with lung cancer risk in smokers and in never-smoker Asian women, and risk of other cancers including breast, ovarian, colorectal, and prostate.

Conclusions: We found that genetic susceptibility to lung cancer in never-smokers is associated to genetic variants with pan-cancer risk effects. The comparison with smokers shows that top variants previously shown to be associated with lung cancer risk only confer risk in the presence of tobacco exposure, underscoring the importance of gene-environment interactions in the etiology of this disease.

Keywords: Genetic susceptibility; Genome-wide association study; Lung cancer; Never smokers.

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Conflict of interest statement

The authors declare that none of them has a conflict of interest

Figures

Figure 1.
Figure 1.
Manhattan plot of the association analysis of lung cancer in European ancestry never smokers performed jointly in the discovery set and the OncoArray samples. The x-axis is chromosomal position, and the y-axis is the statistical significance on a –log10 scale.
Figure 2.
Figure 2.
Regional association plots for smokers (red line) and never smokers (blue line) in CLPTM1L-TERT region (a) and CHRNA3-5 region (b). The y axis corresponds to –log10P for 650 SNPs in the CLPTM1L-TERT region and –log10P for 535 SNPs in CHRNA3-5 region. To aid visual representation we selected the 10 closest SNP and computed average –log10P- values.

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