A trend of higher PD-L1 expression was noted in patients younger than 50 years, and in patients with low-grade tumors (grade 1/2), early stage tumors (stage I), smaller tumor size (tumor diameter ≤3 cm), or superficial myometrial invasion (≤1/2), although this did not reach statistical significance ( P > 0.05) ( Supplementary Figure 2 ).
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PD-L1 Is a Tumor Suppressor in Aggressive Endometrial Cancer Cells and Its Expression Is Regulated by miR-216a and lncRNA MEG3.
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0.0500
0.0730
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marginally significantP = 0.073
There was a marginally significant relationship between increased PD-L1 expression and improved overall survival in patients at histological grade 2 ( P = 0.073) ( Supplementary Figure 1 ).