Table 1. Characteristics of the studies included in the meta-analysis.

Studies	Region	LncRNAs	Tumour type	Expression	Method	Study population (high/low)	Cut-off	Follow-up (month)	Outcome	Quality score (%)
Zhang et al. [18] 2016	China	H19	NSCLC	up-regulation	qPCR	35/35	median	60	OS	83.3%
Sun et al. [14] 2014	China	BANCR	NSCLC	down-regulation	qPCR	53/60	fold change	40	OS/PFS	83.3%
Zhang et al. [19] 2014	China	ZXF1	NSCLC	up-regulation	qRT-PCR	43/19	ratio	36	OS	73.8%
Sun et al. [20] 2014	China	SPRY4-IT1	NSCLC	down-regulation	qRT-PCR	60/61	fold change	40	OS/PFS	73.8%
Yang et al. [21] 2014	China	PVT1	NSCLC	up-regulation	qRT-PCR	65/17	median	60	OS	83.3%
Wan et al. [22] 2016	China	PCAT6	NSCLC	up-regulation	qRT-PCR	28/26	mean	60	OS	73.8%
Zhou et al. [23] 2016	China	AB209630	NSCLC	down-regulation	qRT-PCR	103/35	fold change	60	OS	73.8%
Xie et al. [15] 2014	China	HMlincRNA717	NSCLC	down-regulation	qRT-PCR	49/69	mean	80	OS	78.6%
Nie et al. [24] 2016	China	UCA1	NSCLC	up-regulation	RT-PCR	39/73	Youden index	80	OS	83.3%
Luo et al. [25] 2014	China	CARLo-5	NSCLC	up-regulation	qRT-PCR	29/33	median	80	OS	73.8%
Zang et al. [26] 2016	China	LINC01133	NSCLC	up-regulation	qRT-PCR	34/34	fold change	40	OS/PFS	73.8%
Nie et al. [17] 2014	China	MVIH	NSCLC	up-regulation	qPCR	21/21	median	40	OS	73.8%
Sun et al. [27] 2016	China	NEAT1	NSCLC	up-regulation	qRT-PCR	67/29	fold change	40	OS	73.8%
Wang et al. [28] 2016	China	PVT-1	NSCLC	up-regulation	qRT-PCR	74/71	mean	60	OS	78.6%
Zhao et al. [29] 2016	China	SBF2-AS1	NSCLC	up-regulation	qRT-PCR	80/94	median	70	OS	83.3%
Zhang et al. [30] 2014	China	TUG1	NSCLC	down-regulation	qRT-PCR	96/96	median	60	OS	73.8%
Wang et al. [31] 2015	China	LINC01207	NSCLC	up-regulation	qRT-PCR	49/11	fold change	60	OS	78.6%
Deng et al. [32] 2015	China	AFAP1-AS1	NSCLC	up-regulation	qRT-PCR	66/55	NA	60	OS	76.2%
Wang et al. [33] 2015	China	UCA1	NSCLC	up-regulation	qRT-PCR	36/24	median	80	OS	83.3%
Zhang et al. [34] 2015	China	LINC01133	LSCC	up-regulation	qRT-PCR	NA	median	60	OS	73.8%
Yang et al. [16] 2015	China	ZXF2	NSCLC	up-regulation	qRT-PCR	27/13	fold change	36	OS	73.8%
Hou et al. [35] 2014	China	Sox2ot	NSCLC	up-regulation	qRT-PCR	NA	fold change	60	OS	83.3%
Han et al. [36] 2013	China	GAS6-AS1	NSCLC	down-regulation	qRT-PCR	25/25	mean	60	OS	83.3%
Han et al. [37] 2015	China	PANDAR	NSCLC	down-regulation	qRT-PCR	70/70	mean	60	OS	83.3%
Li et al. [38] 2016	China	AGAP2-AS1	NSCLC	up-regulation	qPCR	40/40	mean	40	OS/PFS	73.8%
Schmidt et al. [39] 2011	Germany	MALAT1	NSCLC	up-regulation	ISH	NA	NA	56	OS	72.7%
Hiroshi et al. [40] 2014	Japan	HOTAIR	SCLC	up-regulation	qRT-PCR	8/10	median	125	OS	71.4%
Huang et al. [41] 2016	China	PVT1	SCLC	up-regulation	qRT-PCR	60/60	median	96	OS	83.3%
Chen et al. [42] 2016	China	CCAT2	SCLC	up-regulation	qRT-PCR	56/56	median	60	OS	83.3%
Liu et al. [43] 2016	China	AK09398	SCLC	up-regulation	qRT-PCR	66/52	median	80	OS/PFS	73.8%