MALAT1 and breast neoplasm: Among the 446 breast tumour RNA samples tested, 63 (14.1%) tumours showed MALAT1 mRNA overexpression (NMALAT1 from 3.02 to 13.4), and only 13 (2.9%) tumours showed MALAT1 mRNA underexpression (NMALAT1 from 0.15 to 0.32), as compared with normal breast tissues.