PTCSC3 and breast cancer: The lncRNA HOXA-AS2 regulates the expression of SCN3A by sponging miR-106a (8), the lncRNA PTCSC3 inhibits triple-negative BC cell proliferation by downregulating lncRNA H19 expression (9), and LINC00511 knockdown enhances paclitaxel cytotoxicity in BC by regulating the miR-29c/CDK6 axis (10).