Sae Yumita, Sadahisa Ogasawara, Miyuki Nakagawa, Susumu Maruta, Tomomi Okubo, Norio Itokawa, Yotaro Iino, Masamichi Obu, Yuki Haga, Atsuyoshi Seki, Tadayoshi Kogure, Takamasa Ishino, Keita Ogawa, Kisako Fujiwara, Terunao Iwanaga, Naoto Fujita, Takafumi Sakuma, Ryuta Kojima, Hiroaki Kanzaki, Keisuke Koroki, Masanori Inoue, Kazufumi Kobayashi, Soichiro Kiyono, Masato Nakamura, Naoya Kanogawa, Tomoko Saito, Takayuki Kondo, Ryo Nakagawa, Shingo Nakamoto, Ryosuke Muroyama, Tetsuhiro Chiba, Ei Itobayashi, Masanori Atsukawa, Yoshihiro Koma, Ryosaku Azemoto, Kenji Ito, Hideaki Mizumoto, Jun Kato, Naoya Kato
BMC gastroenterology 23(1) 101-101 2023年3月31日 査読有り
BACKGROUND: Hyperprogressive disease (HPD) is a phenomenon with greatly accelerated tumor growth and clinical deterioration rates compared to pre-therapy, in patients treated with immune checkpoint inhibitors (ICI). The aim of this study is to clarify the reality of HPD in patients with advanced hepatocellular carcinoma (HCC) who were treated with atezolizumab plus bevacizumab (Atez/Bev) using tumor dynamics. METHODS: Medical records of consecutive patients with advanced HCC who were treated with Atez/Bev were retrospectively reviewed. HPD was defined as a more than two- or fourfold increase in tumor growth rate (TGR) or tumor growth kinetics rate (TGKR) before and after treatment. Overall survival (OS) and baseline characteristics with or without HPD were analyzed. RESULTS: A total of 85 patients were included in the analysis. When HPD was defined as a twofold of TGR or TGKR, 8 patients (8/85, 9.4%) had HPD and 11 had PD without HPD. A total of 5 patients (5/85, 5.9%) were diagnosed with HPD and 14 with PD without HPD when HPD was defined as a fourfold of TGR or TGKR. No significant difference was observed in the baseline characteristics between HPD and non-HPD. CONCLUSION: The prevalence of HPD in patients with advanced HCC treated with Atez/Bev was lower than those treated with nivolumab monotherapy. The HPD mechanism in ICI combined with antibodies targeting vascular endothelial growth factor (VEGF) remains to be elucidated.