Retraction: Jun Xiao, Hao Lai, Sheng-Hong Wei, Zai-Sheng Ye, Fu-Sheng Gong, Lu-Chuan Chen (2019), lncRNA HOTAIR promotes gastric cancer proliferation and metastasis via targeting miR-126 to active CXCR4 and RhoA signaling pathway. This evidence concerns the gene CXCR4 and gastric cancer.