Figure 1

Autoantibodies against lupus–associated autoantigens in the twin cohort. Samples from 93 subjects were evaluated for autoantibodies against (A.) Ro52, (B.) Ro60, (C.) RNP-70 k and (D.) RNP-A autoantigens. The individual autoantibody levels were plotted on the Y-axis using a log₁₀ scale and the median autoantibody value in each group is shown by the horizontal line. Only statistically significant P values between the two groups are shown and were calculated using the Mann-Whitney U test. A pre-determined cut-off value (stippled line) along with seropositive status was assigned before the identity codes of the blinded samples were broken.