PIK3CG is a gene that encodes a protein known as phosphoinositide 3-kinase gamma (PI3Kγ). This protein plays a crucial role in various cellular processes, including cell growth, proliferation, and survival. It is part of the phosphoinositide 3-kinase (PI3K) family, which is involved in signaling pathways that regulate metabolism and immune responses. The PIK3CG protein is primarily expressed in immune cells, such as T cells and macrophages, where it helps modulate inflammatory responses. Dysregulation of PIK3CG has been linked to several diseases, including cancer and autoimmune disorders, making it a potential target for therapeutic interventions.