CXCR4 and non-small cell lung carcinoma: Moreover, the detection of ≥2 JUNB-positive CTCs and CXCR4-positive CTCs in NSCLC patients were correlated with lower OS (Kaplan–Meier, Log Rank, p = 0.002, HR = 6.86, and Kaplan–Meier, Log Rank, p < 0.001, HR = 2.16, respectively).