Figure 1 (A) Muscle function measured by Functional Index in Myositis (FI) before intravenous immunoglobulin (IVIG) treatment and after the third infusion. *The patients improved >20% on the FI score. (B) Serum creatinine kinase (CK) levels before IVIG treatment and after the third infusion. *CK levels decreased by >50%, (C and D) Intercellular adhesion molecule‐1 (ICAM‐1) expression before treatment and in the repeat biopsies of all patients: percentage positive area of total ICAM‐1 expression in the muscle tissue section, measured by computerised image analysis (C), and ICAM‐1 expression in capillaries/mm² tissue area calculated by manual assessment (D).