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RNA polymerase III IgG antibody occur in about 11-23 percent of SSc patients, and typically in the absence of anti-centromere and anti-Scl-70 antibodies. A negative result indicates no detectable IgG antibodies to the dominant antigen of RNA polymerase III and does not rule out the possibility of SSc.


Anti-Jo-1 antibodies are present in approximately 20% to 30% of patients with adult-onset polymyositis syndromes. They are present in >65% of patients with both myositis and interstitial lung disease. In such patients, the presence of anti-Jo-1 antibodies may be predictive of a response to steroid treatment.


RNA Polymerase III Antibody. Test Code. 19899. CPT Code(s) 83516. Print. Test Code. 19899. CPT Code(s) 83516. Not offered in Quest Infectious Disease Inc. - San Juan Capistrano, CA. Please provide SERVICE AREA INFORMATION to confirm Test Code for the lab that services your account or to find available tests you can order.


Result Code: Result Name: LOINC: 806382: RNA Polymerase III IgG Abs: 63329-7


Anti-RNA polymerase III antibodies in patients with systemic sclerosis detected by indirect immunofluorescence and ELISA J. C. Parker , 1 R. W. Burlingame , 2 T. T. Webb , 2 and C. C. Bunn 1 1 Department of Clinical Immunology, Royal Free Hospital, London, UK and 2 INOVA Diagnostics Inc., San Diego, CA, USA.


In eukaryote cells, RNA polymerase III (also called Pol III) transcribes DNA to synthesize ribosomal 5S rRNA, tRNA and other small RNAs. The genes transcribed by RNA Pol III fall in the category of "housekeeping" genes whose expression is required in all cell types and most environmental conditions.


The presence of RNA polymerase III IgG antibody, when considered in conjunction with other laboratory and clinical findings, is an aid in the diagnosis of systemic sclerosis (SSc) with increased incidence of skin involvement and renal crisis with the diffuse cutaneous form of SSc.


Autoantibodies to RNA Polymerase III antigen are found in 11% to 23% of patients with systemic sclerosis. Patients who are positive for RNA Polymerase III antibodies do not have any of the other antibodies typically found in systemic sclerosis patients such as centromere, Scl-70, or Pm/Scl antibodies.


Systemic Sclerosis (Scleroderma) 12 Antibodies Panel 2 - Systemic sclerosis (SSc) is an autoimmune disease characterized by vascular abnormalities, and cutaneous and visceral fibrosis. Some antibodies are considered highly specific for SSc, including Scl-70 (anti-topoisomerase 1) antibody, anti-centromere (CENP) antibodies, and anti-RNA polymerase III antibody and are classification criteria ...


LabCorp test details for Factor II (Prothrombin), DNA Analysis ... as well as testing for deficiencies of antithrombin III, protein C, and protein S may be indicated. Genetic counselors are available for health care providers to discuss results, and for information on how to order additional testing, if desired, at 800-345-4363. ...