He is now Professor, Graduate School of Frontier Biosciences, Osaka University. He was Dean, Professor and Chairman of Department of Medicine at Osaka University Medical School from which he graduated in 1964.
Currently, he holds the position of professor at the Graduate School of Frontier Biosciences, Osaka University. Previously, he was a dean, professor, and chairman of the Department of Medicine at Osaka University Medical School; he graduated there in 1964.