PCAT19 and cancer: Interestingly, PCAT19 lncRNA was predominantly localized in the cytoplasm of various cancer cell types, including lung cancer cells (A549, SK-MES-1) (Wang B. et al., 2022) and GC cells (AGS, MGC-803) (Xiao et al., 2022), and highly enriched in the nuclear fraction of PCa cells (LNCaP, V16A) (Hua et al., 2018).