RNA polymerase II acts as an RNA-dependent RNA polymerase to extend and destabilize a non-coding RNA.
Wagner SD, Yakovchuk P, Gilman B, Ponicsan SL, Drullinger LF, Kugel JF, Goodrich JA. RNA polymerase II acts as an RNA-dependent RNA polymerase to extend and destabilize a non-coding RNA. EMBO J. 2013 Mar 20; 32(6):781-90.