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Research Article: Integrated Analysis Identifies Upregulated SAMDL as a Potential Biomarker Correlating with the Severity of Primary Sjögren’s Syndrome

Date Published: 2023-08-28

Abstract:
Sjögren’s syndrome (SS) is a systemic autoimmune disease characterized by high lymphocyte infiltration of exocrine glands. It occurs mainly in its primary form (pSS) and affects .–.% of the population., In the recent SS diagnostic criteria, the classification criteria are based on objective indicators such as minor salivary gland (MSG) biopsy, serological markers, and the quantification of the secretory function of the lacrimal and salivary glands. Although the diagnostic sensitivity of the new classification has improved compared with the old classification criteria, improvements can still be made in SS diagnosis. In serological markers, a study showed that the sensitivity of anti-SSA antibodies was .%, and the specificity was .% according to the American-European Consensus Group (AECG) classification criteria; It is also present in systemic lupus erythematosus (SLE), other systemic rheumatic diseases, and healthy controls. Moreover, anti-SSB antibodies are ineffective SS diagnostic indicators according to the latest ACR/EULAR classification criteria. In addition, ocular staining can lead to irritation of the eyes and generally requires the operation of an ophthalmologist. Thus, it is necessary to determine more easy-to-use disease-relevant markers to update classification criteria.

Introduction:
Sjögren’s syndrome (SS) is a systemic autoimmune disease characterized by high lymphocyte infiltration of exocrine glands. It occurs mainly in its primary form (pSS) and affects .–.% of the population. , In the recent SS diagnostic criteria, the classification criteria are based on objective indicators such as minor salivary gland (MSG) biopsy, serological markers, and the quantification of the secretory function of the lacrimal and salivary glands. Although the diagnostic sensitivity of the new classification has…

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