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Main Authors: Zhang, Wenran, Luo, Huihuan, Wei, Linda, Nie, Ping, Wu, Yiqun, Yu, Dedong
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2507.18287
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author Zhang, Wenran
Luo, Huihuan
Wei, Linda
Nie, Ping
Wu, Yiqun
Yu, Dedong
author_facet Zhang, Wenran
Luo, Huihuan
Wei, Linda
Nie, Ping
Wu, Yiqun
Yu, Dedong
contents Periodontitis and dental caries are common oral diseases affecting billions globally. While observational studies suggest links between these conditions and lung cancer, causality remains uncertain. This study used two sample Mendelian randomization (MR) to explore causal relationships between dental traits (periodontitis, dental caries) and lung cancer subtypes, and to assess mediation by pulmonary function. Genetic instruments were derived from the largest available genome wide association studies, including data from 487,823 dental caries and 506,594 periodontitis cases, as well as lung cancer data from the Transdisciplinary Research of Cancer in Lung consortium. Inverse variance weighting was the main analytical method; lung function mediation was assessed using the delta method. The results showed a significant positive causal effect of dental caries on overall lung cancer and its subtypes. Specifically, a one standard deviation increase in dental caries incidence was associated with a 188.0% higher risk of squamous cell lung carcinoma (OR = 2.880, 95% CI = 1.236--6.713, p = 0.014), partially mediated by declines in forced vital capacity (FVC) and forced expiratory volume in one second (FEV1), accounting for 5.124% and 5.890% of the total effect. No causal effect was found for periodontitis. These findings highlight a causal role of dental caries in lung cancer risk and support integrating dental care and pulmonary function monitoring into cancer prevention strategies.
format Preprint
id arxiv_https___arxiv_org_abs_2507_18287
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Dissecting the Dental Lung Cancer Axis via Mendelian Randomization and Mediation Analysis
Zhang, Wenran
Luo, Huihuan
Wei, Linda
Nie, Ping
Wu, Yiqun
Yu, Dedong
Computer Vision and Pattern Recognition
Periodontitis and dental caries are common oral diseases affecting billions globally. While observational studies suggest links between these conditions and lung cancer, causality remains uncertain. This study used two sample Mendelian randomization (MR) to explore causal relationships between dental traits (periodontitis, dental caries) and lung cancer subtypes, and to assess mediation by pulmonary function. Genetic instruments were derived from the largest available genome wide association studies, including data from 487,823 dental caries and 506,594 periodontitis cases, as well as lung cancer data from the Transdisciplinary Research of Cancer in Lung consortium. Inverse variance weighting was the main analytical method; lung function mediation was assessed using the delta method. The results showed a significant positive causal effect of dental caries on overall lung cancer and its subtypes. Specifically, a one standard deviation increase in dental caries incidence was associated with a 188.0% higher risk of squamous cell lung carcinoma (OR = 2.880, 95% CI = 1.236--6.713, p = 0.014), partially mediated by declines in forced vital capacity (FVC) and forced expiratory volume in one second (FEV1), accounting for 5.124% and 5.890% of the total effect. No causal effect was found for periodontitis. These findings highlight a causal role of dental caries in lung cancer risk and support integrating dental care and pulmonary function monitoring into cancer prevention strategies.
title Dissecting the Dental Lung Cancer Axis via Mendelian Randomization and Mediation Analysis
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2507.18287