The results show that 9 laminin subunit genes (LAMA2, LAMA3, LAMA4, LAMA5, LAMB1, LAMB2, LAMB3, LAMC1, LAMC2) were highly expressed in tumor tissues of PAAD, with differences that were statistically significant (Figure 1A). The gene discussed is LAMA4; the disease is pancreatic adenocarcinoma.