TOKYO, Feb 22, 2021 - (JCN Newswire) - Eisai Co., Ltd. announced today that it has received orphan drug designation for a prospective indication for unresectable biliary tract cancer with FGFR2 gene fusion by the Ministry of Health, Labour and Welfare, Japan (MHLW) for its in-house discovered fibroblast growth factor (FGF) receptor (FGFR1, FGFR2,...