KRAS and exocrine pancreatic carcinoma: The following microRNAs were selected: miR-21, which promotes cell proliferation and may accelerate tumorigenesis [14,36,37]; miR-155, which interacts with tumor protein p53 inducible nuclear protein 1 (TP53INP1) and transforming growth factor β (TGF-β) [31,38,39]; miR-96 and miR-217, which may act as a tumor suppressors, inhibiting the KRAS-signaling pathway [40,41]; as well as miR-148a, miR-196a, and miR-210, which are frequently included in experimental panels for pancreatic carcinoma diagnosis [23,28,42,43,44].