CDKN2B-AS1 and breast cancer: We found a significant increase in the expression of serum lncRNAs ANRIL (5.69 ± 2.78; p < 0.0001), UCA-1 (9.26 ± 4.58; p = 0.004), and HIT (7.37 ± 4.38; p < 0.0001) in the distant metastases positive breast cancer patients.