LINC00261 and pachyonychia congenita: Next, RT‐qPCR was performed to measure the expression of LINC00261 in the normal pancreatic ductal epithelial cell line H6c7 and two PC cell lines (SW1990 and PANC‐1), which demonstrated that downregulation of LINC00261 also occurred in SW1990 and PANC‐1 cells (Figure 1D).