PHACTR2 (Phosphatase and Actin Regulator 2): PHACTR2 (Phosphatase and Actin Regulator 2) is a gene involved in regulating key cellular processes, including cell signalling and cytoskeletal dynamics. It encodes a protein that interacts with protein phosphatase 1 (PP1) and actin, playing a role in organising actin filaments and maintaining cell shape. PHACTR2 is involved in processes such as cell migration and may contribute to neuronal development.