A previous study identified a series of differently expressed ncRNAs in breast cancer from the Cancer Genome Atlas, including 55 lncRNAs, 88 miRNAs, and 1465 mRNAs, where lncRNA ACTA2-AS1 (lncRNA actin alpha 2, smooth muscle antisense RNA1) was found to be downregulated [7]. This evidence concerns the gene ACTA2 and breast cancer.