Immunophenotypic Stratification of Primary Sjögren's Syndrome Reveals Distinct Lymphocyte Profiles and Clinical Manifestations.

Cluster 1 showed a trend toward a higher prevalence of hematologic abnormalities, including anemia and thrombocytopenia (though statistically nonsignificant), alongside comparable other systemic involvement relative to Clusters 2 and 3 (Figure 3 A).

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