Hepatocyte Nuclear Factor 1 (HNF1, Homeoprotein LFB3, Transcription factor 2, TCF2, Variant hepatic nuclear factor) is a member of the homeodomain-containing superfamily of transcription factors. It is a liver-specific factor of the homeobox-containing basic helix-turn-helix family. The protein binds to DNA as either a homodimer, or a heterodimer with the related protein hepatocyte nuclear factor 1-alpha. HNF1has been shown to function in nephron development and regulates development of the embryonic pancreas. Mutations in the gene result in renal cysts and diabetes syndrome and noninsulin-dependent diabetes mellitus, and expression of the gene is altered in some types of cancer. Multiple transcript variants encoding different isoforms have been found for this gene.
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