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- W2509486054 endingPage "5039" @default.
- W2509486054 startingPage "5023" @default.
- W2509486054 abstract "PD-L1 is an immunoinhibitory molecule that suppresses the activation of T cells, leading to the progression of tumors. Overexpression of PD-L1 in cancers such as gastric cancer, hepatocellular carcinoma, renal cell carcinoma, esophageal cancer, pancreatic cancer, ovarian cancer, and bladder cancer is associated with poor clinical outcomes. In contrast, PD-L1 expression correlates with better clinical outcomes in breast cancer and merkel cell carcinoma. The prognostic value of PD-L1 expression in lung cancer, colorectal cancer, and melanoma is controversial. Blocking antibodies that target PD-1 and PD-L1 have achieved remarkable response rates in cancer patients who have PD-L1-overexpressing tumors. However, using PD-L1 as an exclusive predictive biomarker for cancer immunotherapy is questionable due to the low accuracy of PD-L1 immunohistochemistry staining. Factors that affect the accuracy of PD-L1 immunohistochemistry staining are as follows. First, antibodies used in different studies have different sensitivity. Second, in different studies, the cut-off value of PD-L1 staining positivity is different. Third, PD-L1 expression in tumors is not uniform, and sampling time and location may affect the results of PD-L1 staining. Therefore, better understanding of tumor microenvironment and use of other biomarkers such as gene marker and combined index are necessary to better identify patients who will benefit from PD-1/PD-L1 checkpoint blockade therapy." @default.
- W2509486054 created "2016-09-16" @default.
- W2509486054 creator A5006822602 @default.
- W2509486054 creator A5006945544 @default.
- W2509486054 creator A5024090635 @default.
- W2509486054 creator A5086069157 @default.
- W2509486054 date "2016-08-01" @default.
- W2509486054 modified "2023-10-14" @default.
- W2509486054 title "PD-L1 expression in human cancers and its association with clinical outcomes" @default.
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