Abstract
Background
There is no research to prove the association between irritability and lung cancer, our study performed a Mendelian randomization (MR) approach to elucidate the causal relationship of irritability with lung cancer risk.
Methods
Genome-wide association studies (GWAS) data of irritability, lung cancer and gastroesophageal reflux disease (GERD) were downloaded from a public database for two-sample MR analysis. Independent single-nucleotide polymorphisms (SNPs) associated with irritability and GERD were selected as instrumental variables (IVs). Inverse variance weighting (IVW) and weighted median method were used to analyze causality.
Results
There is an association between irritability and lung cancer risk (ORIVW = 1.01, 95% CI = [1.00, 1.02], P = 0.018; ORweighted median = 1.01, 95% CI = [1.00, 1.02], P = 0.046), and GERD might account for about 37.5% of the association between irritability and lung cancer.
Conclusions
This study confirmed the causal effect between irritability and lung cancer through MR analysis, and found that GERD played an essential mediating role in this relationship, which can partly indicate the role of the “inflammation-cancer transformation” process in lung cancer.
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Data availability
All relevant data are within the manuscript and its additional files.
Abbreviations
- DC:
-
Dendritic cell
- DE:
-
Direct effect
- GERD:
-
Gastroesophageal reflux disease
- GWAS:
-
Genome-wide association studies
- IEU:
-
Integrative Epidemiology Unit
- IFN:
-
Type I interferon
- IVs:
-
Instrumental variables
- IVW:
-
Inverse variance weighting
- LD:
-
Linkage disequilibrium
- ME:
-
Mediation effect
- MR:
-
Mendelian randomization
- RCTs:
-
Randomized controlled trials
- SNPs:
-
Single-nucleotide polymorphisms
- TE:
-
Total effect
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Acknowledgements
We wish to acknowledge the participants and investigators of the Integrative Epidemiology Unit (IEU, https://gwas.mrcieu.ac.uk/).
Funding
This study was supported by Natural Science Foundation of Shanghai, China (No. 22Y31920400, and 22ZR1462400) and Shanghai Frontier Research Base of Disease and Syndrome Biology of Inflammatory cancer transformation (2021KJ03-12).
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AQ, LB designed the study and drafted the paper. LJJ, YLZ, HLZ, YYH, YBG, LX critically revised the paper. All authors read and approved the final manuscript.
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Qi, A., Jiao, L., Zhang, Y. et al. Irritability and risk of lung cancer: a Mendelian randomization and mediation analysis. J Cancer Res Clin Oncol 149, 8649–8654 (2023). https://doi.org/10.1007/s00432-023-04791-2
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DOI: https://doi.org/10.1007/s00432-023-04791-2