PD-L2 expression as a potential predictive biomarker for the response to anti-PD-1 drugs in patients with non-small cell lung cancer

Shinkichi Takamori, Kazuki Takada, Gouji Toyokawa, Koichi Azuma, Mototsugu Shimokawa, Tomoko Jogo, Yuichi Yamada, Fumihiko Hirai, Tetsuzo Tagawa, Akihiko Kawahara, Jun Akiba, Isamu Okamoto, Yoichi Nakanishi, Yoshinao Oda, Tomoaki Hoshino, Yoshihiko Maehara

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)


Background/Aim: To investigate the role of programmed cell death-ligand 2 (PD-L2) expression as a predictive biomarker for response to anti-programmed cell death-1 (PD-1) drugs in patients with non-small cell lung cancer (NSCLC). Patients and Methods: Ten patients who had undergone curative lung resection and received the anti-PD-1 drugs for the recurrence were enrolled. The cut-off value for PD-L2 (antibody clone 176611) expression on tumor cells was set at 50%. Tumor response was evaluated according to immune-related response criteria. Results: Seven patients (70.0%) were positive for PD-L2. The response rates were 28.6% (2/7) and 33.3% (1/3) in patients with PD-L2-positive and PD-L2-negative NSCLC, respectively. Disease control was obtained in 2 patients despite the programmed cell deathligand 1 (PD-L1)-negativity (antibody clone 22C3: 0%, antibody clone SP142: 0%), and these tumors expressed PDL2 (=1%). Conclusion: PD-L2 expression may be a target of immunotherapy in patients with PD-L1-negative NSCLC.

ジャーナルAnticancer research
出版物ステータス出版済み - 10 2018


All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research