While SS is a common association, other relevant autoantibodies include antinuclear antibodies (ANAs), extractable nuclear antigen antibodies (Sjögren's syndrome antigen A (SSA)/Sjögren's syndrome antigen B (SSB)), rheumatoid factor (RF), anticardiolipin antibodies (ACAs), cryoglobulins, and anti-double-stranded DNA antibodies (dsDNA) [5,6]. Here, SSB is linked to synovial sarcoma.