The protein encoded by this gene is a nuclear transcription factor which binds DNA as a homodimer. The encoded protein controls the expression of several genes, including hepatocyte nuclear factor 1 alpha, a transcription factor which regulates the expression of several hepatic genes. This gene may play a role in development of the liver, kidney, and intestines. Mutations in this gene have been associated with monogenic autosomal dominant non-insulin-dependent diabetes mellitus type I. Alternative splicing of this gene results in multiple transcript variants encoding several different isoforms.,HNF4A,FRTS4,HNF4,HNF4a7,HNF4a8,HNF4a9,HNF4alpha,MODY,MODY1,NR2A1,NR2A21,TCF,TCF14,Epigenetics & Nuclear Signaling,Transcription Factors,Nuclear Receptor Signaling,Cancer,Signal Transduction,Cell Biology & Developmental Biology,Cell Adhesion,Wnt/β-Catenin Signaling Pathway,Endocrine & Metabolism,Lipid Metabolism,Cholesterol Metabolism,Cytochromes,AMPK Signaling Pathway,Endocrine and metabolic diseases,Diabetes,Stem Cells,Cardiovascular,Blood,Coagulation,Lipids,HNF4A