Along these so-called “pancreatic genetic mountains”, genomic analysis also revealed a milieu of other genetic and chromosomal alterations, such as mutations in AT-rich interaction domain 1A (ARID1A), breast cancer gene (BRCA) 1, and BRCA2. In 2016, a large study including 456 pancreatic cancer patients classified these tumors into four subtypes according to a comprehensive integrated genomic and transcriptomic analysis; very interestingly, these subtypes are associated with specific histopathological characteristics [7]. This evidence concerns the gene ARID1A and pancreatic neoplasm.