Laboratory features of pediatric patients with early-onset systemic lupus erythematosus during active disease.
| Variables | Pt 1 | Pt 2 | Pt 3 | Pt 4 | Pt 5 | Pt 6 | Pt 7 |
|---|---|---|---|---|---|---|---|
| Anemia | + | — | + | — | + | — | + |
| Leukopenia | — | + | — | — | + | — | + |
| Thrombocytopenia | — | — | — | — | + | — | + |
| Hypocomplementemia | — | — | — | — | + | + | + |
| ANA | 1/160 | — | 1/640 | 1/160 | 1/320 | 1/100 | 1/160 |
| Anti-dsDNA | — | — | — | — | + | + | + |
| ENA | Anti-SM | NA | Anti-SM, SSA | Anti-SM, RNP | Antihistone, nucleosome, SSA, U1-RNP, M2 | — | — |
| LAC | — | NA | + | NA | — | — | — |
| aCL IgG | — | NA | — | NA | — | — | + |
| aCL IgM | — | NA | + | NA | — | + | + |
| Other autoantibodies | NA | RF+ | NA | NA | NA | NA | NA |
ANA: antinuclear antibody; ENA: extractable nuclear antigens; aCL: anticardiolipin antibodies; LAC: lupus anticoagulant; RF: rheumatoid factor; NA: not available.