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Irritability and risk of lung cancer: a Mendelian randomization and mediation analysis

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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

References

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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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Authors and Affiliations

Authors

Contributions

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.

Corresponding authors

Correspondence to Ling Xu or Ling Bi.

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Supplementary file1 (XLSX 87 KB)

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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

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