ZFAS1 and pancreatic adenocarcinoma: ZFAS1 expression in PAAD cell lines was also detected by qRT-PCR, and the results showed that ZFAS1 expression was also significantly upregulated in the PAAD cell lines (BXPC3, SW1990 and PANC1) compared with the normal cell line HPDE6C7 (Fig. 2f).