FOXK1 (Forkhead Box K1) is a transcription factor belonging to the forkhead box (FOX) family, characterized by a unique DNA-binding domain known as the forkhead box. FOXK1 plays a crucial role in regulating gene expression related to cell growth, proliferation, differentiation, and longevity. It holds particular significance in muscle development and regeneration, as well as in the regulation of metabolic functions. Due to its involvement in these vital processes, FOXK1 is also researched for its role in various diseases, including cancer.