1211P A multicenter phase II study of atezolizumab monotherapy following definitive chemoradiotherapy for unresectable locally advanced esophageal squamous cell carcinoma (EPOC1802)

H. Bando, S. Kumagai, D. Kotani, M. Saori, T. Habu, T. Tsushima, Harneet K. Hara, S. Kadowaki, K. Kato, K. Chin, K. Yamaguchi, S-I. Kageyama, H. Hojo, M. Nakamura, H. Tachibana, M. Wakabayashi, M. Fukutani, Nozomu Fuse, H. Nishikawa, T. Kojima