Long-term risk of mortality and lymphoproliferative disease and predictive classification of primary Sjögren's syndrome

Arthritis and Rheumatism
John P A IoannidisHaralampos M Moutsopoulos

Abstract

Primary Sjögren's syndrome (SS) may lead to lymphoproliferative disease (LPD) and death in certain patients. We sought to determine the incidence and predictors of adverse long-term outcomes to achieve a rational predictive classification of the syndrome. Predictive modeling was performed in a cohort of 723 consecutive patients with primary SS (587 newly diagnosed [incident] cases and 136 prevalent cases). During 4,384 person-years of followup, we recorded 39 deaths (7 due to lymphoma) and 38 diagnoses of LPD. The standardized mortality ratio was 1.15 (95% confidence interval [95% CI] 0.86-1.73) compared with the general population of Greece. In incident cases, the probability of LPD was 2.6% at 5 years and 3.9% at 10 years. Mortality rates were significantly higher in patients with low C4 levels at the first study visit (hazard ratio [HR] 4.39, 95% CI 2.18-8.83). LPD was independently predicted by the presence of parotid enlargement (HR 5.21, 95% CI 1.76-15.4), palpable purpura (HR 4.16, 95% CI 1.65-10.5), and low C4 levels (HR 2.40, 95% CI 0.99-5.83) at the first study visit. All patients who eventually developed lymphoma resulting in death during the followup period had either low C4 levels or palpable purpura at the first s...Continue Reading

Associated Clinical Trials

Dec 5, 2018·Maria Soledad Retamozo

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