PTEN and neoplasm: Competing Endogenous RNAs or ceRNAs have been found to have important roles in a variety of cellular processes like cell cycle control and tumor suppression, e.g., PTEN-P1 blocking miR-19b and miR-20a from binding to PTEN tumor suppressor (Karreth et al., 2011; Sumazin et al., 2011; Tay et al., 2011).