Deborah M. Levy, M.D., from the Hospital for Sick Children in Toronto, and colleagues analyzed ethnicity, sociodemographics, and disease characteristics in 213 Canadian children with childhood-onset SLE. The ethnic composition was 31 percent white, 30 percent Asian, 15 percent South Asian, 10 percent black, 4 percent Latino/Hispanic, 4 percent Aboriginal, and 3 percent Arab/Middle Eastern.
The researchers found that disease manifestations (malar rash, arthritis, serositis, renal disease), autoantibody profiles, and severity of disease expression differed by ethnicity. Only 20 percent of whites had severe disease, compared with 51 percent of Asian patients and 41 percent of black patients. However, disease activity indices, irreversible organ damage, and treatment (76 percent receiving prednisone, 86 percent receiving antimalarials, and 56 percent requiring additional immunosuppressants) were similar across ethnicities.