Prognostic value of pre-treatment risk stratification and post-treatment neutrophil/lymphocyte ratio change for pembrolizumab in patients with advanced urothelial carcinoma

Yoshiaki Yamamoto, Junji Yatsuda, Mototsugu Shimokawa, Nakanori Fuji, Akihiko Aoki, Shigeru Sakano, Mitsutaka Yamamoto, Akinobu Suga, Yasuhide Tei, Satoru Yoshihiro, Seiji Kitahara, Kazuhiro Nagao, Kimio Takai, Yoriaki Kamiryo, Jumpei Akao, Shiro Yamaguchi, Kazuo Oba, Tomoyuki Shimabukuro, Hiroaki Matsumoto, Tomomi Kamba, Hideyasu Matsuyama