LINC00261 and pachyonychia congenita: Moreover, the expression of LINC00261 in five commonly used PC cell lines including PANC-1, AsPC-1, HS 766T, SW1990, MIA PaCa-2, and normal pancreatic epithelial cell line (HPC-Y5) was examined by RT-qPCR, revealing that the expression of LINC00261 is lower in all five PC cell lines compared with the HPC-Y5 cells (p < 0.05), with PANC-1 displaying the lowest expression (Fig. 2B).