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Natural History and Predictors of Progression to Sjögren's Syndrome Among Participants of the Sjögren's International Collaborative Clinical Alliance Registry

Research output: Contribution to journalArticle

Caroline H Shiboski, Alan N Baer, Stephen C Shiboski, Mi Lam, Stephen Challacombe, Hector E Lanfranchi, Morten Schiødt, Penelope Shirlaw, Muthiah Srinivasan, Hisanori Umehara, Frederick B Vivino, Esen Akpek, Vatinee Bunya, Cristina F Vollenweider, John S Greenspan, Troy E Daniels, Lindsey A Criswell, Sjögren's International Collaborative Clinical Alliance Research Groups

Original languageEnglish
Pages (from-to)284-294
Number of pages11
JournalArthritis care & research
Volume70
Issue number2
Early online date3 Jan 2018
DOIs
Publication statusPublished - Feb 2018

King's Authors

Abstract

OBJECTIVE: To explore changes in the phenotypic features of Sjögren's syndrome (SS), and in SS status among participants in the Sjögren's International Collaborative Clinical Alliance (SICCA) registry over a 2-3-year interval.

METHODS: All participants in the SICCA registry who were found to have any objective measures of salivary hypofunction, dry eye, focal lymphocytic sialadenitis in minor salivary gland biopsy, or anti-SSA/SSB antibodies were recalled over a window of 2 to 3 years after their baseline examinations to repeat all clinical examinations and specimen collections to determine whether there was any change in phenotypic features and in SS status.

RESULTS: As of September 15, 2013, a total of 3,514 participants had enrolled in SICCA, and among 3,310 eligible, 771 presented for a followup visit. Among participants found to have SS using the 2012 American College of Rheumatology (ACR) classification criteria, 93% again met the criteria after 2 to 3 years, and this proportion was 89% when using the 2016 ACR/European League Against Rheumatism (EULAR) criteria. Among those who did not meet ACR or ACR/EULAR criteria at baseline, 9% and 8%, respectively, had progressed and met them at followup. Those with hypergammaglobulinemia and hypocomplementemia at study entry were, respectively, 4 and 6 times more likely to progress to SS by ACR criteria than those without these characteristics (95% confidence interval 1.5-10.1 and 1.8-20.4, respectively).

CONCLUSION: While there was stability over a 2-3-year period of both individual phenotypic features of SS and of SS status, hypergammaglobulinemia and hypocomplementemia at study entry were predictive of progression to SS.

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