[Molecular classification of pancreatic cancer].

Pancreatic cancer is a malignancy with outstandingly poor prognosis caused by several factors among which one is that it is predominated by mutant KRAS oncogene. Genomic studies revealed that clinically useful therapy targets are present only in the DNA repair deficient subgroup and in the minor wild type KRAS-carrying group. However, phylogenetic studies defined four molecular subgroups of pancreatic cancer among which the immunogenic progenitor form could well be the target of immunotherapies. Furthermore, this group may well be the one characterized by DNA repair deficiency and high tumor mutational burden. Furthermore, the majority of familiar pancreatic cancers could also be found in this latter subgroup. Unfortunately, the G12C mutation of KRAS in pancreatic cancer is rare, therefore pancreatic cancer patients could not benefit from the recent revolution of KRAS target therapies.