Interestingly, in line with these data the presence of JUNB in breast cancer patients’ CTCs has been previously associated with significantly lower median PFS (Kaplan–Meier analysis, p = 0.015) and OS (Cox regression, p = 0.026, HR = 2.31, and Kaplan–Meier analysis, p = 0.02) [18]. This evidence concerns the gene JUNB and breast cancer.