TENT4B and cancer: PAPD5, a noncanonical poly (A) polymerase (Rammelt et al., 2011), is reported to interact with several miRNAs, such as miR-21 in HER2-positive metastatic gastric cancer (Boele et al., 2014) and miR-4728 cancer and other proliferative diseases (Newie et al., 2016).