RT Journal Article SR Electronic T1 Granulocyte colony-stimulating factor induces disease flare in patients with antineutrophil cytoplasmic antibody-associated vasculitis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1655 OP 1658 VO 31 IS 8 A1 Christof Iking-Konert A1 Benedikt Ostendorf A1 Mark Foede A1 Rebecca Fischer-Betz A1 Gregor Jung A1 Maria G Haensch A1 Matthias Schneider YR 2004 UL http://www.jrheum.org/content/31/8/1655.abstract AB Recombinant human granulocyte colony-stimulating factor (rhuG-CSF) is frequently given to patients with leukopenia or neutropenia caused by various underlying diseases. The treatment with rhuG-CSF is apparently safe, although cutaneous vasculitis and flares in patients with autoimmune diseases are described. We describe 2 patients with histologically proven antineutrophil cytoplasmic antibody-associated systemic vasculitis with disease flares after administration of rhuG-CSF, given to improve collection of stem cells prior to autologous stem cell transplantation.