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Attenuating PI3K isoforms in pancreatic cancer: Focus on immune PI3Kγ. Phosphoinositide 3-kinases PI3Ks are major drug targets in oncology. Their role is far from being completely understood in pancreatic ductal adenocarcinoma. Pancreatic cancer is a dismal disease with limited therapeutic options except for surgery. We highlight here two elegant works demonstrating the role of PI3Kγ in cancer-associated macrophages applied in particular to pancreatic tumors. These data open new avenues for the use of PI3K-targetting drugs in cancer as anti-stroma therapies. Amongst the classI PI3K isoforms, PI3Kγ and PI3Kδ, are highly expressed in immune cells. Isoform-specific or pan-class I PI3K inhibitors which target all classI PI3Ks could be used as a targeted therapy towards cancer cell signaling but also as immunotherapies. Research on immunoregulation of human pancreatic cancer by the other ubiquitous α- or β-isoforms of PI3K needs to be performed.