The present application discloses methods for treating an IL-6-mediated disorder such as rheumatoid arthritis (RA), juvenile idiopathic arthritis (JIA), systemic JIA (sJIA), polyarticular course JIA (pcJIA), systemic sclerosis, or giant cell arteritis (GCA), with subcutaneously administered antibody that binds interleukin-6 receptor (anti-IL-6R antibody). In particular, it relates to identification of a fixed dose of anti-IL-6R antibody, e.g. tocilizumab, which is safe and effective for subcutaneous administration in patients with IL-6-mediated disorders. In addition, formulations and devices useful for subcutaneous administration of an anti-IL-6R antibody are disclosed.本出願は、インターロイキン6受容体(抗IL-6R抗体)を結合する皮下投与される抗体で関節リウマチ(RA)、若年性突発性関節炎(JIA)、全身型JIA(sJIA)、多関節型JIA(pcJIA)、全身性硬化症又は巨細胞性動脈炎(GCA)などのIL-6媒介疾患を治療する方法を開示する。本出願は特に、IL-6媒介疾患患者に皮下投与しても安全かつ有効な抗IL-6R抗体、例えばトシリズマブの固定用量の決定に関する。加えて、抗IL-6R抗体の皮下投与に有用な製剤及びデバイスが開示される。