Kazuyuki Yoshikazi, MD, PhD, is a Professor in the Dept of Immuno-Medical Science at Osaka University, Japan. He was the principal investigator that identified IL-6 as the key cytokine in the pathogenesis of MCD (1989), found anti-IL-6R Ab improved the abnormal findings of MCD (2002), and found the mechanism of inflammatory anemia via IL-6 induced hepcidin (2010). He is also the Chairman of a Japanese research group on Castleman Disease and TAFRO syndrome.