S-Space College of Medicine/School of Medicine (의과대학/대학원) Cancer Research Institute (암연구소) Journal Papers (저널논문_암연구소)
Clinicopathologic analysis of programmed cell death-1 and programmed cell death-ligand 1 and 2 expressions in pulmonary adenocarcinoma: comparison with histology and driver oncogenic alteration status
- Koh, Jaemoon; Go, Heounjeong; Keam, Bhumsuk; Kim, Moon-Young; Nam, Soo Jeong; Kim, Tae Min; Lee, Se-Hoon; Min, Hye Sook; Kim, Young Tae; Kim, Dong-Wan; Jeon, Yoon Kyung; Chung, Doo Hyun
- Issue Date
- Modern Pathology, Vol.28 No.9, pp.1154-1166
- Immunotherapies targeting the programmed cell death-1/programmed cell death-ligand 1 pathway have emerged as promising therapeutic strategies for lung cancer. However, the expression pattern and prognostic implications of programmed cell death-ligand 1 and 2 and programmed cell death-1 in comparison with the histology and genetic alterations in pulmonary adenocarcinomas remains unclear and thus were addressed here. Programmed cell death-ligand 1 and 2 expression in tumor cells and the quantities of programmed cell death-1(+) and CD8(+) tumor-infiltrating lymphocytes were immunohistochemically evaluated in 497 resected pulmonary adenocarcinomas and analyzed according to clinicopathological and genetic statuses. Programmed cell death-ligand 1 and 2 expression were observed in 59% and 64% of pulmonary adenocarcinomas, respectively, and showed a strong positive correlation with each other (P<0.001). Programmed cell death-ligand 1 expression was higher in nodal metastasis cases (P=0.006), smokers (P=0.056), poorly differentiated tumors and histologic subtypes of solid and micropapillary patterns (P<0.001). There was no significant difference in programmed cell death-ligand 1 and 2 expression according to EGFR mutation status. However, programmed cell death-ligand 1 expression was correlated with ALK translocation (P=0.054) and expression of EGFR and MET (P<0.001). Meanwhile, programmed cell death-ligand 2 expression was correlated with ALK translocation (P=0.052), and expression of MET (P<0.001) and ERBB2 (P=0.013). The numbers of CD8+ and programmed cell death-1+ lymphocytes were higher in smokers (P=0.012 and 0.016) and MET-expressing adenocarcinomas (P<0.001). Patients expressing programmed cell death-ligand 1 and/or high ratios of programmed cell death-1(+)/CD8(+) lymphocytes showed shorter disease-free survival (P=0.001). Our study demonstrated that programmed cell death-ligand 1 and 2 expression varied with histology, EGFR, ALK, MET, and ERBB2 statuses, and activation of the programmed cell death-1/programmed cell death-ligand 1 pathway may be a poor prognostic factor in pulmonary adenocarcinomas.
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