Genetic Association Between Systemic Lupus Erythematosus and Cerebrovascular Disorders.

Area of Science:

• Genetics
• Immunology
• Neurology

Background:

• The causal relationship between systemic lupus erythematosus (SLE) and cerebrovascular disorders (CVDs) is not fully understood.
• Observational studies indicate a potential link, but genetic evidence is lacking.

Purpose of the Study:

• To evaluate potential genetic differences between patients with SLE and CVDs.
• To investigate the causal relationship between SLE and various CVDs using genetic data.

Main Methods:

• Mendelian randomization (MR) analyses were performed using summary statistics from genome-wide association studies (GWAS).
• Univariate MR (UVMR), multivariable MR (MVMR), and meta-analysis were employed.
• Large genomic databases including UK Biobank, FinnGen, and OpenGWAS were utilized.

Main Results:

• UVMR analysis revealed a significant genetic causal relationship between SLE and ischemic stroke (OR 1.000367, P=0.014).
• No genetic causal relationship was found between SLE and other CVDs like cerebral aneurysm or intracerebral hemorrhage.
• MVMR analysis confirmed the association between SLE and ischemic stroke after adjusting for confounders.

Conclusions:

• This study provides genetic evidence supporting a causal association between SLE and ischemic stroke.
• The findings enhance understanding of the genetic basis linking SLE to CVDs.
• Further research is warranted to explore these genetic connections.