OnCo

STAT1 (Signal transducer and activator of transcription 1-alpha/beta) is a protein that switches other genes on and off. The public catalogues list it as a drug target and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Ovarian cancer and Melanoma. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and other growth factors. Following type I IFN (IFN-alpha and IFN-beta) binding to cell surface receptors, signalling via protein kinases leads to activation of Jak kinases (TYK2 and JAK1) and to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerise and associate with ISGF3G/IRF-9 to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of IFN-stimulated genes (ISG), which drive the cell in an antiviral state. In response to type II IFN (IFN-gamma), STAT1 is tyrosine- and serine-phosphorylated. It then forms a homodimer termed IFN-gamma-activated factor (GAF), migrates into the nucleus and binds to the IFN gamma activated sequence (GAS) to drive the expression of the target genes, inducing a cellular antiviral state. Location: Cytoplasm; Nucleus (UniProt). Locus 2q32.2 (HGNC).

Where it is found
  • Ovarian cancer: CIViC evidence names this disease
  • Melanoma: CIViC evidence names this disease
Class: transcription · Gene: STAT1 · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

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Resistance routes

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Companion diagnostics

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Literature

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Query for this target: (TITLE:"STAT1" OR ABSTRACT:"STAT1" OR TITLE:"signal transducer and activator of transcription 1" OR ABSTRACT:"signal transducer and activator of transcription 1" OR TITLE:"Signal transducer and activator of transcription 1-alpha/beta" OR ABSTRACT:"Signal transducer and activator of transcription 1-alpha/beta" OR TITLE:"STAT91" OR ABSTRACT:"STAT91" OR TITLE:"ISGF-3" OR ABSTRACT:"ISGF-3") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about STAT1, not a curated reading list.

Export

The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/stat1.json. Licence CC BY-NC 4.0.