Successful treatment of anti-signal recognition particle antibody-positive myositis with intravenous cyclophosphamide: A case report Kiyoshi Migita, Nozomu Matsuda, Haruki Matsumoto, Yuya Sumichika, Kanae Tsuchihashi, Tomoyuki Asano, Kiyoshi Saito, J. Temmoku, Y. Fujita, N. Matsuoka, S. Sato, S. Yoshida • 2025