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Autoimmune diseases and COPD risk: A Mendelian randomization study.

Xinlai Ma1, Yuxiao Sun1, Hongyu Mou1

  • 1The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China.

International Immunopharmacology
|July 28, 2024
PubMed
Summary

Individuals with type 1 diabetes, hypothyroidism, celiac disease, and systemic lupus erythematosus face a higher risk of developing chronic obstructive pulmonary disease (COPD). This study found no causal link between COPD and multiple sclerosis or other autoimmune conditions examined.

Keywords:
Autoimmune diseasesCOPDMendelian randomization

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Area of Science:

  • Genetics
  • Immunology
  • Pulmonology

Background:

  • Epidemiological studies suggest a link between chronic obstructive pulmonary disease (COPD) and autoimmune diseases.
  • Investigating a potential causal relationship between genetically based autoimmune conditions and COPD is crucial for understanding disease etiology.

Purpose of the Study:

  • To examine the causal association between nine genetically determined autoimmune diseases and the risk of developing COPD.
  • Utilize a two-sample Mendelian randomization (MR) approach to assess genetic correlations.

Main Methods:

  • Employed two-sample Mendelian randomization (MR) using large-scale genome-wide association study (GWAS) data.
  • Analyzed genetic data for type 1 diabetes, hypothyroidism, systemic lupus erythematosus, celiac disease, multiple sclerosis, ulcerative colitis, rheumatoid arthritis, primary biliary cirrhosis, and primary sclerosing cholangitis against COPD cases from UK Biobank.
  • Utilized inverse variance weighting (IVW) as the primary analysis method, with MR-Egger regression and Cochran's Q test for validity and heterogeneity assessment.

Main Results:

  • A significant causal link was found between type 1 diabetes, hypothyroidism, celiac disease, and systemic lupus erythematosus, all associated with an increased risk of COPD.
  • No significant causal relationship was identified between COPD and multiple sclerosis, ulcerative colitis, rheumatoid arthritis, primary biliary cirrhosis, or primary sclerosing cholangitis.
  • Results remained robust after adjusting for potential confounders such as smoking.

Conclusions:

  • Type 1 diabetes, hypothyroidism, celiac disease, and systemic lupus erythematosus are associated with a higher risk of developing COPD.
  • The study did not find evidence of a causal link between COPD and multiple sclerosis, ulcerative colitis, rheumatoid arthritis, primary biliary cirrhosis, or primary sclerosing cholangitis.