Table 2

hnRNP, Sm, and U1 snRNP reactivities of autoantibodies in patients with SLE, RA, and MCTD (adapted from Smolen and Steiner21)

AutoantibodyMCTDRASLE
hn, heterogeneous nuclear; MCTD, mixed tissue connective disease; RA, rheumatoid arthritis; RNP, ribonuclear protein; SLE, systemic lupus erythematosus; Sm, Smith antigen; sn, small nuclear.
Anti-hnRNP+++
Anti-Sm+
Anti-U1 snRNP++