The relationship of race and income, the latter as a surrogate for socioeconomic status, on disease outcomes has been widely researched in many diseases and chronic conditions. For example black (and Hispanic) race is associated with a worse outcome in pediatric systemic lupus erythematosus. In this volume of The Journal, Phillippi et al investigated the relationship of these factors to the functional outcome and development of calcinosis as a measurement of morbidity (and perhaps disease control) in juvenile dermatomyositis, a rare disease with an annual incidence of 1-4 per million children. Calcinosis, if severe, can result in substantial disability. In a cross sectional study based on 438 children reported by North American pediatric rheumatologists to the Childhood Arthritis and Rheumatology Research Alliance Legacy Registry, they found that both black race and low income (defined as <$50 000 per year) independently negatively affected patient function and was positively associated with the development of calcinosis. It is important to state that despite these statistically significant disparities, the functional outcome of the patients, including those from black race and low income, was generally good. The cause of these disparities could not be ascertained from this study and can include genetic/pharmacogenetic and environmental effects, as well as patient-related factors such as adherence, type of insurance, or other unknown factors. Disparities did not appear to be related to access to expert medical care or differences in treatments prescribed. This study also demonstrates the importance of using well designed registries to investigate rare diseases in “real life.” Registries, used for many years, especially in oncology, are now used more frequently in childhood rheumatic diseases. Newly developed registries that include prospectively collected data and biologic specimens will improve the quality of these studies and enable us to answer some of the questions left open in this study. Article page 38 ▶ Race, Income, and Disease Outcomes in Juvenile DermatomyositisThe Journal of PediatricsVol. 184PreviewTo determine the relationships among race, income, and disease outcomes in children with juvenile dermatomyositis (JDM). Full-Text PDF
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