Figure 2. Overview of the Research Workflow and Key Datasets (Created in BioRender. Ding, K. (2025) https://BioRender.com/x20y933). Abbreviation List: DEGs: Differentially Expressed Genes; GO: Gene Ontology; KEGG: Kyoto Encyclopedia of Genes and Genomes; QTL: Quantitative Trait Locus; RA: Rheumatoid Arthritis; SMR: Summary-data-based Mendelian Randomization; WGCNA: Weighted Gene Co-expression Network Analysis.