BCAR4 and breast cancer: In the next section, we briefly review lncRNAs that can regulate the sensitivity to chemotherapy in vitro and in vivo, and some may function as biomarkers to diagnosis or predict prognosis for BC patients (such as HOTAIR, H19, MALAT1, TINCR, LINC00473, LINP1, BCAR4, and SNHG6).