Plasma levels of insulin-like growth factor 1 (IGF-1) before (gray bars) and after (white bars) 14 days of TNF-α-blocking treatment with etanercept in glucocorticoid-naïve patients with polymyalgia rheumatica (PMR) and in non-PMR control subjects. Box plots show median values and 25% to 75% interquartile ranges. Symbols connected by full lines represent values for individual subjects. Dashed lines represent tendencies between medians of paired data.
Kreiner and Galbo Arthritis Research & Therapy 2012 14:R186 doi:10.1186/ar4017