Journal of Practical Oncology ›› 2023, Vol. 37 ›› Issue (2): 117-122.doi: 10.11904/j.issn.1002-3070.2023.02.005

• Basic Research • Previous Articles     Next Articles

The correlation between the expression of programmed death ligand 1 in non-small cell lung cancer and clinical pathological features and common driver gene mutation

LONG Chaolian, LI Kun, LIU Zichen, ZHANG Nana, CHE Nanying   

  1. Department of Pathology,Beijing Institute of Tuberculosis and Chest Tumors,Beijing Chest Hospital Affiliated to Capital Medical University,Beijing Key Laboratory of Drug-resistant Tuberculosis Research,Beijing 101149,China
  • Received:2022-10-21 Revised:2023-02-01 Online:2023-04-28 Published:2023-05-30

Abstract: Objective The aim of this study was to analyze the correlation between the expression of programmed death ligand 1(PD-L1)and clinical pathological features and common driver gene mutation in patients with non-small cell lung cancer(NSCLC),so as to provide theoretical basis for immunotherapy of NSCLC patients. Methods Retrospective inclusion of NSCLC patients who underwent PD-L1 immunohistochemistry staining and epidermal growth factor receptor(EGFR),Kirsten rat sarcoma viral oncogene(KRAS),anaplastic lymphoma kinase(ALK),RET proto-oncogene(RET),v-Raf murine sarcoma viral oncogene homolog(BRAF),ROS proto-oncogene 1(ROS1),human epidermal growth factor receptor-2(HER2),cellular-mesenchymal to epithelial transition factor(MET)gene testing from the Pathology Department of Beijing Thoracic Hospital Affiliated to Capital Medical University from January 2018 to December 2021.Analysis of the impact of different pathological features and driver gene variants on PD-L1 protein expression in NSCLC patients. Results PD-L1 protein expression was detected in 2 386 cases,with a positive rate of 45.8%(1 093/2 386).Among them,the low expression group(1%≤TPS≤49%)was 62.0%(678/1 093),while the high expression group(TPS≥50%)was 38.0%(415/1 093).There were differences in PD-L1 expression among different clinical and pathological features.Multivariate logistic regression analysis showed that smoking history,lymph node metastasis,pathological subtypes,EGFR mutations,KRAS mutations,ALK and MET mutations were independent risk factors for PD-L1 expression in NSCLC patients(P<0.05),while lymph node metastasis and EGFR mutations were independent risk factors for PD-L1 expression levels in NSCLC patients(P<0.05). Conclusion The PD-L1 protein has a high positive rate in patients with smoking,squamous cell carcinoma,KRAS mutant,ALK positive,and MET mutant,and is highly expressed in patients with lymph node metastasis and EGFR wild-type.Different from NSCLC patients with EGFR positive,NSCLC patients with KRAS,and MET positive are expected to benefit from the treatment of immune checkpoint inhibitors.

Key words: Non-small cell lung cancer, Driver gene, Programmed death ligand-1, Immune checkpoint inhibitor

CLC Number: