OnCo

CHEK1 (Serine/threonine-protein kinase Chk1) is a protein kinase, an enzyme that switches other proteins on by adding phosphate groups. The public catalogues list it as a drug target, a biomarker and a DNA repair gene, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Prostate cancer and Small-cell lung cancer. 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

Serine/threonine-protein kinase which is required for checkpoint-mediated cell cycle arrest and activation of DNA repair in response to the presence of DNA damage or unreplicated DNA. May also negatively regulate cell cycle progression during unperturbed cell cycles. This regulation is achieved by a number of mechanisms that together help to preserve the integrity of the genome. Recognises the substrate consensus sequence [R-X-X-S/T]. Binds to and phosphorylates CDC25A, CDC25B and CDC25C. Phosphorylation of CDC25A at 'Ser-178' and 'Thr-507' and phosphorylation of CDC25C at 'Ser-216' creates binding sites for 14-3-3 proteins which inhibit CDC25A and CDC25C. Location: Nucleus; Chromosome; Cytoplasm; Cytoplasm, cytoskeleton, microtubule organizing center, centrosome (UniProt). Locus 11q24.2 (HGNC).

Where it is found
  • Prostate cancer: CIViC evidence names this disease
  • Small-cell lung cancer: CIViC evidence names this disease
Class: kinase · Gene: CHEK1 · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

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Resistance routes

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Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"CHEK1" OR ABSTRACT:"CHEK1" OR TITLE:"checkpoint kinase 1" OR ABSTRACT:"checkpoint kinase 1" OR TITLE:"Serine/threonine-protein kinase Chk1" OR ABSTRACT:"Serine/threonine-protein kinase Chk1" OR TITLE:"CHK1" OR ABSTRACT:"CHK1") 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 CHEK1, 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/chek1.json. Licence CC BY-NC 4.0.