lncRNAs involved in breast cancer cell drug-resistance are UCA1 in doxorubicin resistance (93), PANDA in anthracycline resistance (94), ARA in adriamycin resistance (95), CCAT2 in 5-fluorouracil (96), and BCAR4, HOTAIR, and M41 in tamoxifen resistance (97–99). Here, HOTAIR is linked to breast cancer.