Recent genome-wide association studies have identified alleles associated with susceptibility to a number of autoimmune diseases such as systemic lupus erythematosus (SLE) or Sjogren’s Syndrome (SS), some of which encode proteins involved in IFN induction or signaling pathways [46,47,48,49,50,51,52,53,54,55]. Here, IFNA1 is linked to synovial sarcoma.