Genetically predicted anti‑rubella virus IgG levels and dermatitis risk: A two‑sample Mendelian randomization study

This MR study provides suggestive evidence that genetically predicted anti-rubella IgG levels may be associated with reduced allergic contact dermatitis risk. However, the findings are exploratory, do not distinguish between vaccine-induced and infection-induced immunity, and require replication and mechanistic validation. No causal associations were found for other virus-specific IgG traits.