Clinical Relevance
First level information About Clinical Relevance & List of Abbreviations |
▶ Found in patients with SLE, chronic autoimmune hepatitis or juvenile idiopathic arthritis ▶ If SLE is clinically suspected, it is recommended to perform a follow-up test for anti-dsDNA antibodies, alone or in combination with dsDNA/histone complexes (nucleosomes/chromatin); anti-dsDNA antibodies are included in the classification criteria for SLE (15, 16) ▶ If chronic autoimmune hepatitis or juvenile idiopathic arthritis is suspected, follow-up testing is not recommended because the respective autoantigens revealing the AC-1 pattern are not completely defined (17) Notes:
Although autoantibodies to Topoisomerase I (formerly Scl-70) may be
reported as nuclear homogeneous, they typically reveal a composite AC-29
HEp-2 IIFA pattern; as such, clinical suspicion of SSc may warrant
follow-up testing for reactivity to this antigen (14, 18) |
First level information references |
14. Andrade
LEC, Klotz W, Herold M, et al. International consensus on antinuclear
antibody patterns: definition of the ac-29 pattern associated with
antibodies to DNA topoisomerase I. Clin Chem Lab Med 2018;56:1783–8. 15. Conrad
K, Schössler W, Hiepe F. Autoantibodies in systemic autoimmune
diseases: a diagnostic reference. 2. 3th edn. Autoantigens
autoantibodies autoimmunity, 2015. 16. Petri
M, Orbai AM, Alarcón GS, et al. Derivation and validation of the
systemic lupus international collaborating clinics classification
criteria for systemic lupus erythematosus. Arthritis Rheum
2012;64:2677–86. 17. Conrad
K, Schössler W, Hiepe F. Autoantibodies in organ specific autoimmune
diseases. a diagnostic reference. 8. 2th edn. Autoantigens
autoantibodies autoimmunity, 2017. 18. Dellavance
A, Gallindo C, Soares MG, et al. Redefining the Scl-70 indirect
immunofluorescence pattern: autoantibodies to DNA topoisomerase I yield a
specific compound immunofluorescence pattern. Rheumatology
2009;48:632–7. 19. European
Association for the Study of the Liver. EASL clinical practice
guidelines: autoimmune hepatitis. J Hepatol 2015;63:971–1004. |
Second level information |
None |
Second level information references |
None |
FAQ |
No FAQ received |