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Hox transcript antisense intergenic RNA (HOTAIR) level was upregulated in RCC tissues and RCC cell lines. (A and C) Relative expression of HOATIR in RCC tissues was compared with corresponding nontumour tissues. B, HOTAIR level was examined in normal kidney cell HK2 and RCC cell lines ACHN and 786‐O. D, HOTAIR upregulated was correlated with distant metastasis. Each experiment was independently repeated at least three times. Data were presented as mean ± SD (n = 3). *P < 0.05
