Ryuji Yamamoto is President and CEO of CytoPathfinder Inc. as well as a board member of PGXIS Ltd. He has extensive business experience initially in real estate and then as founder of the Cooperative Kigyo Jyouho Center (KJC), which provides a range of business and management support activities for nearly 3000 companies.

In addition to chairing KJC, Ryuji Yamamoto is president of EcoWorks Ltd and Nichietsu Ltd.