SNAI1 and pancreatic adenocarcinoma: Moreover, a negative correlation between SNAI1 mRNA and GATA6-AS1 level was found in human PDAC tissues from TCGA-PAAD (R = − 0.218, P = 0.0034) and GSE15471 (R = − 0.3262, P = 0.0427; Additional file 1: Fig. S3B, C).