OnCo

RBBP8 (DNA endonuclease RBBP8) is an enzyme. The public catalogues list it as a DNA repair gene, and the evidence so far is association rather than a proven role. 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

Endonuclease that cooperates with the MRE11-RAD50-NBN (MRN) complex in DNA-end resection, the first step of double-strand break (DSB) repair through the homologous recombination (HR) pathway. HR is restricted to S and G2 phases of the cell cycle and preferentially repairs DSBs resulting from replication fork collapse. Key determinant of DSB repair pathway choice, as it commits cells to HR by preventing classical non-homologous end-joining (NHEJ). Specifically promotes the endonuclease activity of the MRN complex to clear DNA ends containing protein adducts: recruited to DSBs by NBN following phosphorylation by CDK1, and promotes the endonuclease activity of MRE11 to clear protein-DNA adducts and generate clean double-strand break ends. Functions downstream of the MRN complex and ATM, promotes ATR activation and its recruitment to DSBs in the S/G2 phase facilitating the generation of ssDNA. Component of the BRCA1-RBBP8 complex that regulates CHEK1 activation and controls cell cycle G2/M checkpoints on DNA damage. Location: Nucleus; Chromosome (UniProt). Locus 18q11.2 (HGNC).

Class: enzyme · Gene: RBBP8 · 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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Companion diagnostics

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Literature

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Query for this target: (TITLE:"RBBP8" OR ABSTRACT:"RBBP8" OR TITLE:"RB binding protein 8, endonuclease" OR ABSTRACT:"RB binding protein 8, endonuclease" OR TITLE:"DNA endonuclease RBBP8" OR ABSTRACT:"DNA endonuclease RBBP8" OR TITLE:"CtIP" OR ABSTRACT:"CtIP" OR TITLE:"COM1" OR ABSTRACT:"COM1" OR TITLE:"SCKL2" OR ABSTRACT:"SCKL2") 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 RBBP8, 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/rbbp8.json. Licence CC BY-NC 4.0.