Table 3.

Frequency of autoantibodies (percentages) in patients with anti-RPA

Autoantibody	RPA(+), all (n = 9)	RPA(+), SLE (n = 4)	RPA(-), SLE (n = 272)
Anti-nRNP	0a	0	39a
Anti-Sm	0	0	15
Anti-Ro	11	25	33
Anti-La	0	0	11
Anti-Ku	0	0	2
Rib-P	0	0	8
Anti-RNA helicase A	0	0	6
Anti-Su	22	0	10

RPA, replication protein A; SLE, systemic lupus erythematosus; ^a, p = 0.00122 by Fisher's exact test.