Indonesian Journal of Rheumatology (IJR) is a peer-reviewed open access journal on rheumatic diseases and connective tissue disorders. This is an official journal of Indonesian Rheumatology Associantion (IRA) and published twice a year since 2009. Our mission is to encourage the development of scientific and medical practice in rheumatic diseases and connective tissue disorders. This journal is self-focused on rheumatic disease and connective tissue disorders in the form of original article (extended and/or concise reports), review articles, editorial letters, leaders, lesson from memorable cases, book reviews, and matter arising. Both in clinical and laboratory including animal studies.