CXCR4 and thyroid gland carcinoma: In turn, high expression of CXCR4 in BRCA corresponds to better prognosis, smaller yet significant difference between Kaplan-Meier curves predicting better prognosis was observed for lung adenocarcinoma (LUAD) and thyroid cancer (THCA) (Figure 3B, Table 2), whereas no difference was observed in lung squamous cell carcinoma (LUSC).