Table 2. Summary of the comparison for the P-values for the association between lncRNA XIST and clinicopathological characteristics.

Author	Year	Country	Tumor type	Sample	Total number	Age	Gender	Tumor size	LNM	DM	Differentiation	Stage	Expression
Wu et al. [16]	2017	China	ESCC	Tissue	127	0.286	0.410	0.320	-	-	0.831	0.596	Up
Wei et al. [21]	2017	China	PC	Tissue	64	0.798	0.317	0.006	0.131	0.079	-	0.023	Up
Du et al. [22]	2017	China	PCa	Tissue	62	0.324	-	-	<0.01	<0.01	-	0.012	Down
Hu et al. [23]	2017	China	BC	Tissue	52	0.540	0.658	0.028	0.042	-	-	0.012	Up
Ma et al. [40]	2017	China	GC	Tissue	98	0.175	0.651	0.006	0.002	-	-	0.005	Up
Mo et al. [37]	2017	China	HCC	Tissue	88	0.119	0.754	0.002	-	-	-	-	Up
Du et al. [38]	2017	China	Glioma	Tissue	69	0.921	0.537	0.003	-	-	-	<0.001	Up
Xiong et al. [39]	2017	China	BC	Tissue	67	0.389	-	0.393	-	0.901	0.418	0.036	Up
Chen et al. [19]	2016	China	GC	Tissue	106	0.253	0.648	0.023	0.013	0.011	0.326	0.016	Up
Fang et al. [15]	2016	China	NSCLC	Tissue	53	0.951	0.062	0.003	0.511	-	0.0317	0.0002	Up
Kobayashi et al. [20]	2016	Japan	CSCC	Tissue	49	0.12	-	0.87	0.110	-	-	0.810	Down
Tantai et al. [46]	2015	China	NSCLC	Tissue	32	0.549	0.717	0.010	0.001	-	-	-	Up

Abbreviations: BC, bladder cancer; CSCC, cervical squamous cell carcinoma; DM, distant metastasis; ESCC, esophageal squamous cell carcinoma; GC, gastric cancer; HCC, hepatocellular carcinoma; LNM, lymph node metastasis; NSCLC, non-small-cell lung cancer; PC, pancreatic cancer; PCa, prostate cancer.