TUG1 and breast cancer: lncRNA TUG1 affected proliferation by regulating wnt/β-catenin signal pathway, miR-384, miR-498, miR-29c, miR-299-3p, or microRNA-9, in oral squamous cell carcinoma, nasopharyngeal carcinoma,esophageal squamous cell carcinoma, pancreatic cancer, breast cancer, respectively.