HNF1A and Patent ductus arteriosus: Additionally, POU5F1/OCT4 and HNF1A mRNA levels were correlated (Pearson’s r = 0.406, p=8.9×10−8) in patient tumors samples from The Cancer Genome Atlas (TCGA) dataset for PDA (PAAD cohort, data not shown), further supporting relationship between the two genes.