SNRNP70 and systemic lupus erythematosus: SLE patients with CI and SLE patients without CI groups showed no significant difference in duration of disease, SLEDAI-2k scores, anti-Sm antibody, anti-U1RNP antibody, drug accumulation of glucocorticoids, hydroxychloroquine, and cyclophosphamide, but significant difference in anti-dsDNA antibody and MMSE scores.