OnCo

ERCC5 (DNA excision repair protein ERCC-5) is an enzyme. 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 Ovarian cancer, Skin cancer, Neuroendocrine tumours and 3 more. 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

Single-stranded structure-specific DNA endonuclease involved in DNA excision repair. Makes the 3'incision in DNA nucleotide excision repair (NER). Binds and bends DNA repair bubble substrate and breaks base stacking at the single-strand/double-strand DNA junction of the DNA bubble. Plays a role in base excision repair (BER) by promoting the binding of DNA glycosylase NTHL1 to its substrate and increasing NTHL1 catalytic activity that removes oxidised pyrimidines from DNA. Involved in transcription-coupled nucleotide excision repair (TCR) which allows RNA polymerase II-blocking lesions to be rapidly removed from the transcribed strand of active genes. Functions during the initial step of TCR in cooperation with ERCC6/CSB to recognised stalled RNA polymerase II. Location: Nucleus; Chromosome (UniProt). Locus 13q33.1 (HGNC).

Where it is found
  • Ovarian cancer: Open Targets association 0.57 with ovarian cancer (MONDO_0008170)
  • Skin cancer: Open Targets association 0.56 with skin cancer (MONDO_0002898)
  • Neuroendocrine tumours: Open Targets association 0.52 with neuroendocrine neoplasm (MONDO_0019496)
  • Colorectal cancer: Open Targets association 0.51 with colorectal cancer (MONDO_0005575)
  • Melanoma: Open Targets association 0.54 with melanoma (MONDO_0005105); CIViC evidence names this disease
  • Non-small-cell lung cancer: CIViC evidence names this disease
Class: enzyme · Gene: ERCC5 · 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:"ERCC5" OR ABSTRACT:"ERCC5" OR TITLE:"ERCC excision repair 5, endonuclease" OR ABSTRACT:"ERCC excision repair 5, endonuclease" OR TITLE:"DNA excision repair protein ERCC-5" OR ABSTRACT:"DNA excision repair protein ERCC-5" OR TITLE:"ERCM2" OR ABSTRACT:"ERCM2") 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 ERCC5, not a curated reading list.

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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/ercc5.json. Licence CC BY-NC 4.0.