Anti-Ro antibodies

Anti-SSA autoantibodies (Anti-Sjögren’s-syndrome-related antigen A, also called anti-Ro, or the combination anti-SSA/Ro or anti Ro/SSA autoantibodies) are anti-nuclear autoantibodies that are associated with many autoimmune diseases, such as systemic lupus erythematosus (SLE), SS/SLE overlap syndrome, subacute cutaneous LE (SCLE), neonatal lupus and primary biliary cirrhosis. Also, they are often present in Sjögren's syndrome.

Presence of Anti-SSA/Ro in pregnant women with SLE is associated with an increased risk of [congenital heart block in the fetus].

Ro protein binds to Y RNA.

Approximately only 0.1 to 0.5 percent of the general population has the antibody.