STING1 and polyarticular arthritis: The cGAS‐STING pathway is upregulated in several autoimmune diseases, like STING‐associated vasculopathy with onset in infancy (SAVI),80 Aicardi‐Goutières syndrome (AGS),81 systemic lupus erythematosus (SLE), familial cerebellar lupus erythematosus, and polyarthritis.82