SNRPD1 and systemic lupus erythematosus: For the 100 naive SLE patients, the diagnostic performance of the antibodies was evaluated for sensitivity, specificity, and accuracy and found to be 68.00%, 88.05%, and 83.52% for anti-SmD1, respectively; 32.00%, 98.54%, and 83.52%, respectively, for anti-Sm; and 59.00%, 97.28%, and 89.16%, respectively, for anti-dsDNA.