HOX transcript antisense RNA (HOTAIR) is a long intergenic noncoding RNA that is closely related to tumour metastasis and poor recurrence-free survival.4,5 Moreover, studies have identified HOTAIR as a novel diagnostic and prognostic biomarker.6,7 HOTAIR can recruit lysine-specific demethylase 1 (LSD1) and polycomb repressive complex 2 (PRC2). Here, HOTAIR is linked to neoplasm.