Zinc finger protein 683 (ZNF683)

Zinc finger protein 683 (ZNF683), also known as Hobit, is a transcription factor predominantly expressed in tissue-resident T cells, natural killer (NK) cells, and certain other lymphocyte populations. ZNF683 acts as a master regulator of tissue residency in immune cells by suppressing the expression of genes involved in cell egress from non-lymphoid tissues, thereby promoting the long-term establishment and maintenance of adaptive and innate tissue-resident lymphocyte subsets in organs like the skin, gut, liver, and kidney. It also plays a key role in the differentiation of NK and NKT cells and modulates cytokine production, including inhibiting interferon-gamma (IFN-γ) expression under certain conditions. ZNF683 is homologous to the transcriptional repressor BLIMP1/PRDM1, but unlike BLIMP1, it specializes in governing resident immunity rather than inducing terminal differentiation. Its activity is critical for the rapid local responses to infection or reinfection at tissue sites. To date, ZNF683 is not known to be directly targeted by any drugs, nor is it a routinely used biomarker or an established cause of safety concerns in therapeutic development.

Other names

HobitTissue-resident T-cell transcription regulator protein ZNF683MGC33414Homolog of Blimp-1 in T-cellHomolog of Blimp-1 in T cellsHypothetical protein MGC33414

Not applicable; no direct drug interactions described