Abstract | OBJECTIVE: To assess in clinical practice the frequency and diagnosis associated with the SS-B-positive/SS-A negative autoantibody profile. METHODS: We analyzed a one-year consecutive population of 624 patients referred by clinicians to the immunology laboratory to investigate anti-SS-A and/or anti-SS-B autoantibodies, who were detected using luminex technology. Data were analyzed for patients with isolated anti-SS-B autoantibodies. The clinical characteristics and diagnosis of connective tissue diseases (CTD) were retrieved according to the international criteria. RESULTS: Among 1173 sera positive for anti-SS-A and/or anti-SS-B autoantibodies from 624 patients, we identified 84 patients (13.5%) that had isolated anti-SS-B. Among the 75 patients positive for anti-SS-B with known clinical data, 15 were diagnosed with a CTD (20%) including 4 systemic lupus erythematosus (5%), 4 rheumatoid arthritis (5%), 2 idiopathic inflammatory myositis (3%), 1 primary Sjögren's syndrome pSS (1%), 1 systemic sclerosis (1%), 2 undefined CTD (3%), and 1 mixed CTD (1%). Among the 60 other patients, 18 had non-CTD autoimmune diseases and 42 had non- autoimmune diseases. Within the CTD population, the presence of isolated anti-SS-B was not significantly associated to characteristic indicating a specific syndrome. There was no association between diagnosis of CTD and level of anti-SS-B autoantibodies (p = 0.70). Arthralgia was the more frequent sign and encountered in 10 patients (67%), of whom 3 had arthritis. CONCLUSION: The presence of anti-SS-B, without anti-SS-A autoantibodies using luminex technology, was not associated with CTD, especially pSS, in daily clinical practice. Our data suggests that the SS-B serological profile is not contributive for the classification criteria of pSS.
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Authors | Sabine Jardel, Nicole Fabien, Arnaud Hot, Sandra Vukusic, Jacques Tebib, Vincent Cottin, Pascal Sève, Maurice Laville, Alexandre Belot, Isabelle Durieu, Lorna Garnier, Frédéric Coutant, Quitterie Reynaud, Jean Christophe Lega |
Journal | PloS one
(PLoS One)
Vol. 12
Issue 9
Pg. e0185104
( 2017)
ISSN: 1932-6203 [Electronic] United States |
PMID | 28931060
(Publication Type: Journal Article)
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Chemical References |
- Antibodies, Antinuclear
- Autoantibodies
- SS-A antibodies
- SS-B antibodies
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Topics |
- Adult
- Aged
- Antibodies, Antinuclear
(blood, immunology)
- Arthritis, Rheumatoid
(immunology)
- Autoantibodies
(blood, immunology)
- Connective Tissue Diseases
(diagnosis, immunology)
- Female
- Health Surveys
- Humans
- Male
- Middle Aged
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