RAB1A and lung cancer: Compared with the immortalized lung/bronchus epithelial cell line BEAS-2B, Rab1A is highly expressed in all lung cancer cell lines with great variability, ranging from a 6-fold increase in the A549 and H1650 cell lines to a 1.5-fold increase in H460 and SK-LU-1 cells lines (Figure 2A and B).