Disease-Specific Clinical Correlates of Vitamin D in Systemic Lupus Erythematosus and Behçet’s Disease

Background and Objectives: Vitamin D deficiency is common in systemic lupus erythematosus (SLE) and Behçet’s disease (BD). However, whether it is associated with the same clinical parameters in both conditions remains unknown. Our objective is to compare the clinical correlates of serum 25-hydroxyvitamin D [25(OH)D] levels in patients with SLE and BD. Materials and Methods: This exploratory cross-sectional study included 38 patients with SLE and 32 with BD. Spearman’s correlation analyses, partial correlations controlling for sex, and tertile analyses were performed separately for each disease group.