Recent studies have shown that XIST has an aberrant expression pattern in breast cancer [16], cervical squamous cell carcinoma [17], colorectal cancer [18], gastric cancer [19], glioma [20], hepatocellular carcinoma [21], nasopharyngeal carcinoma [22], non-small cell lung cancer (NSCLC) [23], pancreatic cancer [24], osteosarcoma [25], and ovarian cancer [26]. The gene discussed is XIST; the disease is non-small cell lung carcinoma.