HOX transcript antisense RNA (HOTAIR) in cancer.

Long noncoding RNAs (lncRNAs) have emerged as a new family of master regulators of cancer. The lncRNA HOX transcript antisense RNA (HOTAIR) is a prime example of an oncogenic trans-acting lncRNA. The expression of HOTAIR is elevated in a broad spectrum of cancers and is associated with metastasis and poor prognosis.