LINC-ROR and neoplasm: In addition, the fact that linc-ROR can act as a sponge not only for miR-145 but also for let-7,15 miR-20515 and other potential miRNAs,12 and findings that other lncRNAs with ceRNA activity usually have several target miRNAs,9 attracted us to speculate that linc-ROR may also affect CSCs properties through regulating one or more important tumor-suppressor miRs.