• 1. Department of Thoracic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, P.R.China;
  • 2. Peking Union Medical College, Eight-Year MD Program, Beijing, 100005, P.R.China;
  • 3. Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, P.R.China;
  • 4. National Center for Nannoscience and Technology, Beijing, 100190, P.R.China;
LIANG Naixin, Email: pumchnelson@163.com
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Lung cancer is the most frequent cancer and the leading cause of cancer death all around the world. Anti-programmed cell death 1 (PD-1)/programmed cell death-ligand 1 (PD-L1) therapies have significantly improved the outcomes of non-small cell lung cancer (NSCLC) patients in recent years. However, the objective response rate in non-screened patients is only about 20%. It is very important to screen out the potential patients suitable for immunotherapy. Immunohistochemical staining of tumor tissue biopsies with PD-L1 antibodies can predict the therapeutic response to immunotherapy to some extent, but it still has some limitations. Recently some clinical studies have shown that PD-L1 expression in circulating tumor cells (CTC-PD-L1) is a potential independent biomarker and may provide important information for immunotherapy in NSCLC. This article will review technology for CTC-PD-L1 detection and the predictive value of CTC-PD-L1 for immunotherapy in NSCLC and review the latest clinical research progress.

Citation: WANG Yadong, YANG Xiaoying, JIA Ziqi, BING Zhongxing, YANG Huaxia, YANG Yanlian, HU Zhiyuan, LI Shanqing, LIANG Naixin. Clinical utility of PD-L1 expression in circulating tumor cells in non-small cell lung cancer patients treated with immunotherapy. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2021, 28(1): 110-115. doi: 10.7507/1007-4848.202003026 Copy

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