Josep Carreras Leukaemia Research Institute Mar 31 2025 During development, cells grow, expand, and migrate to generate tissues and organs in a highly controlled manner. Many intracellular pathways – series of signalling cascades within a cell – regulate these actions to avoid non-programmed growth that could lead to malformations or cancer. One of these pathways is the PTEN / PI3K axis, a complex series of perfectly balanced chemical reactions. Mutations in the PTEN gene usually result in the