Prognostic and Diagnostic Significance of circRNA Expression in Esophageal Cancer: A Meta-analysis

Table 2

Main characteristics of studies for prognosis analysis.

Study	Year	circRNA	Cancer type	circRNA expression		Species	Detection method	Regulation	Follow-up (months)
				High	Low
Fan et al. [19]	2018	circ_0001946	EC	25	25	Tissue	qRT-PCR	Downregulated	33
Cao et al. [26]	2018	circ_100876	EC	37	37	Tissue	qRT-PCR	Upregulated	55
Li et al. [27]	2018	circ-CIRS7	EC	61	62	Tissue	qRT-PCR	Upregulated	90
Hu et al. [20]	2019	circ-GSK3β	EC	35	15	Tissue	qRT-PCR	Upregulated	21
Pan et al. [28]	2018	circ_0006948	EC	77	76	Tissue	qRT-PCR	Upregulated	60
Wang et al. [24]	2019	circ-TTC17	EC	22	8	Plasma	qRT-PCR	Upregulated	20
Wang et al. [23]	2020	circ-SLC7A5	EC	44	43	Plasma	qRT-PCR	Upregulated	40
Huang et al. [21]	2020	circ_0004771	EC	53	52	Plasma	qRT-PCR	Upregulated	48

EC, esophageal cancer; qRT-PCR, quantitative real-time polymerase chain reaction; circRNA, circular RNA.