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Prognostic impact of programmed cell death ligand 1 expression on long-term oncologic outcomes in colorectal cancer

Authors
 Sung Uk Bae  ;  Woon Kyung Jeong  ;  Seong Kyu Baek  ;  Nam Kyu Kim  ;  Ilseon Hwang 
Citation
 Oncology Letters, Vol.16(4) : 5214-5222, 2018 
Journal Title
 Oncology Letters 
ISSN
 1792-1074 
Issue Date
2018
Keywords
colorectal neoplasms ; prognosis ; programmed cell death 1 receptor ; survival analysis
Abstract
The present study evaluated the association between programmed cell death ligand-1 (PD-L1) expression and long-term oncologic outcomes in colorectal cancer (CRC). PD-L1 expression was evaluated using immunohistochemistry in 175 patients who underwent surgical resection for CRC between September 1999 and August 2004. Patients were grouped according to PD-L1 expression, with 82 (46.9%) and 93 (53.1%) in the low and high PD-L1 expression groups, respectively. The overall survival (OS) and disease-free survival (DFS) rates were significantly better in the high expression group compared with in the low expression group (OS: 48.2 vs. 32.9%, P=0.047; DFS: 43.3 vs. 32.9%, P=0.021). According to the Tumor-Node-Metastasis stage subgroups, the OS rates in the low and high expression groups, respectively, were 66.7 and 60.0% in stage I (P=0.715), 51.8 and 46.7% in stage II (P=0.789), 19.6 and 51.1% in stage III (P=0.011) and 9.1 and 0% in stage IV (P=0.005). The DFS rates in the low and high expression groups, respectively, were 66.7 and 60.0% in stage I (P=0.715), 51.8 and 46.7% in stage II (P=0.857), 19.6 and 38.3% in stage III (P=0.006) and 9.1 and 0% in stage IV (P=0.700). The systemic recurrence rate was significantly higher in the low expression group compared with in the high expression group (42.7 vs. 12.9%, respectively, P=0.030). Low PD-L1 expression was significantly associated with tumor relapse and poor prognosis in stage III CRC.
Files in This Item:
T201806091.pdf Download
DOI
10.3892/ol.2018.9264
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/170877
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