LncRNA ZNFX1 antisense RNA 1 (ZFAS1) levels were downregulated in breast cancer tissues, and silencing ZFAS1 expression obviously promoted the cell proliferation of MDA-MB-231 by activating the signal transducer and activator of the transcription 3 (STAT3) pathway [45]. Here, ZFAS1 is linked to breast carcinoma.