Associations between chronic obstructive pulmonary disease and ten common cancers: novel insights from Mendelian randomization analyses

作者：Shi‐Xia Liao, Yanwen Wang, Jian Zhou, Yuting Liu, Shuangfei He, Lanying Zhang, Maomao Liu, Wen Dongmei, Pengpeng Sun, Guangbing Lu, Qi Wang, Yao Ouyang, Yongxiang Song · 发表于：BMC Cancer · 年份：2024 · DOI：10.1186/s12885-024-12381-9 · 被引用次数：7 · 研究领域：Chronic Obstructive Pulmonary Disease (COPD) Research、Genetic Associations and Epidemiology、Global Cancer Incidence and Screening

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a significant global health issue, suspected to elevate the risk for various cancers. This study sought to discern whether COPD serves as a risk marker or a causative factor for prevalent cancers. METHODS: We employed univariable MR (UVMR) analyses to investigate the causal relationship between COPD and the top ten common cancers. Sensitivity analyses were performed to validate the main findings. Multivariable MR (MVMR) and two-step MR analyses were also conducted. False-discovery-rate (FDR) was used to correct multiple testing bias. RESULTS: ). This relationship extends to lung cancer subtypes such as squamous cell carcinoma (LUSC), adenocarcinoma (LUAD), and small cell lung cancer (SCLC). A tentative link was also identified between COPD and bladder cancer (OR = 1.53, 95%CI 1.03-2.28, FDR = 0.125). No significant associations were found between COPD and other types of cancer. The MVMR analysis that adjusted for smoking, alcohol drinking, and body mass index did not identify any significant causal relationships between COPD and either lung or bladder cancer. However, the two-step MR analysis indicates that COPD mediated 19.2% (95% CI 12.7-26.1%), 36.1% (24.9-33.2%), 35.9% (25.7-34.9%), and 35.5% (26.2-34.8%) of the association between smoking and overall lung cancer, as well as LUAD, LUSC, and SCLC, respectively. CONCLUSIONS: COPD appears to act more as a risk marker than a direct cause of prevalent cancers. Importa...