Anti U1RNP Antibodies

Anti-U1RNP antibodies are autoantibodies that target ribonucleoproteins involved in processing genetic material within cells. These antibodies can be found in several autoimmune conditions, including mixed connective tissue disease (MCTD), systemic lupus erythematosus (SLE), and systemic sclerosis. When found in high levels, they are particularly associated with mixed connective tissue disease, which has features of multiple autoimmune conditions. Testing for these antibodies helps doctors diagnose and differentiate between various autoimmune connective tissue diseases.