Mechanistic insights into lethal hyper progressive disease induced by PD-L1 inhibitor in metastatic urothelial carcinoma

Kazuki Nishimura, Kiyoshi Takahara, Kazumasa Komura, Mitsuaki Ishida, Kensuke Hirosuna, Ryoichi Maenosono, Masahiko Ajiro, Moritoshi Sakamoto, Kengo Iwatsuki, Yuki Nakajima, Takuya Tsujino, Kohei Taniguchi, Tomohito Tanaka, Teruo Inamoto, Yoshinobu Hirose, Fumihito Ono, Yoichi Kondo, Akihide Yoshimi, Haruhito Azuma

Research output: Contribution to journalArticlepeer-review

Abstract

Hyper progressive disease (HPD) is a paradoxical phenomenon characterized by accelerated tumor growth following treatment with immune checkpoint inhibitors. However, the pathogenic causality and its predictor remain unknown. We herein report a fatal case of HPD in a 50-year-old man with metastatic bladder cancer. He had achieved a complete response (CR) through chemoradiation therapy followed by twelve cycles of chemotherapy, maintaining CR for 24 months. Three weeks after initiating maintenance use of a PD-L1 inhibitor, avelumab, a massive amount of metastases developed, leading to the patient’s demise. Omics analysis, utilizing metastatic tissues obtained from an immediate autopsy, implied the contribution of M2 macrophages, TGF-β signaling, and interleukin-8 to HPD pathogenesis.

Original languageEnglish
Article number206
Journalnpj Precision Oncology
Volume8
Issue number1
DOIs
Publication statusPublished - 12-2024
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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