Type 1 interferons and myositis

Abstract

Recent studies suggest a mechanistic role for molecules induced by type 1 interferons in the pathogenesis of some forms of myositis. For dermatomyositis, evidence that these molecules injure myofi bers seems especially strong. In the group of disorders known as polymyositis, the study of blood samples suggests a potential role. It is unknown what drives the sustained presence of type 1 interferoninducible molecules in these diseases, as the type 1 interferons themselves have not been specifi cally detected along with their downstream biomarkers. Therapeutic development for blockade of IFNa is in progress aided by the identifi cation of blood genomic biomarkers. © 2010 BioMed Central Ltd.