<p>Multiple regression results of CRP and IL-6.</p>

Utilizing genomic structural equation modeling, we investigated whether the genetic liability for 14 immune markers (e.g., C-reactive protein [CRP], interleukin-6 [IL-6]) mediated associations between latent genomic factors of immune-mediated diseases (e.g., autoimmune) and psychiatric disorders (e.g., internalizing).

While the literature extensively describes the psychiatric relevance of CRP, results indicated this is better explained by its biological precursor, IL-6. This is evidenced by highly attenuated associations of psychiatric traits with CRP when accounting for overlapping signal of IL6. Overall, the genetic liability of six immune markers significantly mediated 11 psychiatric-immune disease genetic relationships.