PCED1B and breast cancer: lncRNA PC-esterase domain containing 1B antisense RNA 1 (PCED1B-AS1) was found to be involved in the regulation of macrophage apoptosis and autophagy in active tuberculosis (12,13); additionally, it has been demonstrated that PCED1B-AS1 is abnormally expressed in gliomas and breast cancer tissues, where it functions as an oncogenic lncRNA (14,15).