• 1. The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P. R. China;
  • 2. The Second Affiliated Hospital (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P. R. China;
  • 3. Nanhai District Hospital of Chinese Medicine (Guangdong Provincial Hospital of Integrated Chinese and Western Medicine), Foshan, Guangdong, 528000 P. R. China;
  • 4. State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P. R. China;
LI Jiqiang, Email: lijiqiangjizhen@163.com; CHEN Jiankun, Email: chenjiankundoctor@126.com
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Objective  To explore the shared genetic structure and causal relationship between respiratory diseases and obstructive sleep apnea (OSA) through comprehensive genetic analysis. Methods  In this study, we utilized large-scale genome-wide association studies (GWAS) summary statistics and novel statistical genetic approaches. We incorporated genetic data related to respiratory diseases to align with OSA. We conducted a genome-wide cross-trait analysis to assess genetic correlation, identify shared loci, examine expression-trait associations, and infer causal relationships. Results  We found positive genetic correlation between acute upper respiratory infections and OSA (rg=0.435, P=3.47×10?14), acute lower respiratory infections and OSA (rg=0.481, P=4.03×10?5), acute bronchitis and OSA (rg=0.453, P=7.00×10?4), pneumonia and OSA (rg=0.368, P=7.94×10?10), asthma and OSA (rg=0.364, P=2.73×10?19), and COPD and OSA (rg=0.300, P=1.10×10?10). We conducted a cross-trait meta-analysis to identify shared loci between respiratory diseases and OSA. Additionally, we employed summary-based Mendelian randomization (SMR) to predict causal genes associated with both respiratory diseases and OSA. Mendelian randomization (MR) supported the causal roles of pneumonia (IVW OR=1.15; 95%CI 1.02-1.30), asthma (IVW OR=1.05, 95%CI 1.01-1.08) in OSA, while not observe any significant association between other respiratory diseases and the risk of OSA. Conclusions  An intrinsic link between respiratory diseases and OSA has been demonstrated. The genetic correlation and causal role of respiratory diseases in OSA emphasize the importance of considering respiratory health in the management of OSA.

Citation: LIU Shaoqing, REN Xiaolei, WANG Yushi, TAN Zhaoqi, GAO Ming, CHEN Hai, CHEN Yu, LI Jiqiang, CHEN Jiankun. A genome-wide cross-trait analysis identifies shared loci and causal relationships of respiratory diseases and obstructive sleep apnea. Chinese Journal of Respiratory and Critical Care Medicine, 2026, 25(5): 309-318. doi: 10.7507/1671-6205.202507012 Copy

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