Dr. Hironobu Ihn received his PHD and MD from University of Tokyo in 1990. He worked as the research fellow in Division of Rheumatology and Immunology, Medical University of South Carolina, SC, USA between1994 and 1997. He served as the lecturer, Department of Dermatology, Faculty of Medicine between 2001 and 2005 and became the associate Professor, Department of Dermatology, Faculty of Medicine, University of Tokyo. He was elected as the professor and Chairman, Department of Dermatology and Plastic Surgery, Faculty Life Sciences, Kumamoto University in 2005 and became the Vice President, Kumamoto University Hospital in 2013.

Dr. Hironobu has national and international membership in editorial boards and also has publication record. .He obtained Japanese Society of Connective Tissue Research Award in 2001, Japanese Society of Investigative Dermatology Award in 2005, and Japan Rheumatism Foundation Award in 2006.

• Clinical and pathological features, Clinical evaluation of scleroderma spectrum disorders using a points system,
• RXRB is an MHC-encoded susceptibility gene associated with anti-topoisomerase I antibody-positive systemic sclerosis.
• Systemic lupus erythematosus associated with myasthenia gravis, pemphigus foliaceus and chronic thyroiditis after thymectomy.
• Inhibition of heat shock protein 90 exerts antitumor effect in angiosarcoma: involvement of the vascular endothelial growth factor signaling patway