Fig. 1

Circ_0000020 expression was upregulated in glioma tissues and cells. a qRT-PCR was used to detect the expression of circ_0000020 in 50 cases of gliomas and adjacent brain tissues. b Kaplan–Meier survival analysis was used to analyze the prognosis of the 50 cases of glioma patients according to circ_0000020 expression level. c qRT-PCR was used to detect the expression of circ_0000020 in NHA and 5 kinds of glioma cells (U87, SW1008, T98G, U251 and U138). (n = 3). N: normal tissue; T: tumor tissue; Error bars represented the mean ± SD of at least three independent experiments; **P < 0.01 and ***P < 0.001