Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within several processes, including insulin secretion; liver development; and positive regulation of DNA-templated transcription. Predicted to be active in nucleus. Human ortholog(s) of this gene implicated in several diseases, including artery disease (multiple); cerebral infarction; glucose metabolism disease (multiple); liver disease (multiple); and renal cell carcinoma. Orthologous to human HNF1A (HNF1 homeobox A).