. 2015 Oct 26;34(6):313–321. doi: 10.5414/NP300922

Table 2. Comparison of the TCGA analyses of PD-L1 gene expression and is prognostic role in two recent studies [10, 12].

Parameter/study		Berghoff et al. [10]	Nduom et al. [12]
Sample size		446	194
Assay		Agilent microarray	Illumina RNASeq
Significant OS correlation of PD-L1 gene expression	Univariate	No (HR = 1.038, 95% CI 0.9553 – 1.368, p = 0.144)	Yes (HR = 1.54, 95% CI 1.05 – 2.28, p = 0.0231)
Significant OS correlation of PD-L1 gene expression	Multivariate (PD-L1, age)	No (HR = 1.036, 95% CI 0.8702 – 1.232, p = 0.694)	Yes (HR = 1.52, 95% CI 1.03 – 2.25, p = 0.0343)