Baseline Serum Osteopontin Levels Predict the Clinical Effectiveness of Tocilizumab but Not Infliximab in Biologic-Naïve Patients with Rheumatoid Arthritis: A Single-Center Prospective Study at 1 Year (the Keio First-Bio Cohort Study), Keisuke Izumi , Yuko Kaneko, Misato Hashizume, Keiko Yoshimoto, Tsutomu Takeuchi, PLOS One, doi: 10.1371/journal.pone.0145468, published 23 December 2015.
Source: Genentech