Hyperprogressive disease during PD-1 blockade in patients with advanced gastric cancer

Chang Gon Kim, Moonki Hong, Hei‐Cheul Jeung, Garden Lee, Hyun Cheol Chung, Sun Young Rha, Hyo Song Kim, Choong‐kun Lee, Ji Hyun Lee, Yejeong Han, Jee Hung Kim, Seo Young Lee, Hyunki Kim, Su‐Jin Shin, Song‐Ee Baek, Minkyu Jung