OnCo

TP53BP1 (TP53-binding protein 1) is a protein that switches other genes on and off. The public catalogues list it as a biomarker, a fusion partner and a DNA repair gene, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to 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

Double-strand break (DSB) repair protein involved in response to DNA damage, telomere dynamics and class-switch recombination (CSR) during antibody genesis. Plays a key role in the repair of double-strand DNA breaks (DSBs) in response to DNA damage by promoting non-homologous end joining (NHEJ)-mediated repair of DSBs and specifically counteracting the function of the homologous recombination (HR) repair protein BRCA1. In response to DSBs, phosphorylation by ATM promotes interaction with RIF1 and dissociation from NUDT16L1/TIRR, leading to recruitment to DSBs sites. Recruited to DSBs sites by recognising and binding histone H2A monoubiquitinated at 'Lys-15' (H2AK15Ub) and histone H4 dimethylated at 'Lys-20' (H4K20me2), two histone marks that are present at DSBs sites. Required for immunoglobulin class-switch recombination (CSR) during antibody genesis, a process that involves the generation of DNA DSBs. Participates in the repair and the orientation of the broken DNA ends during CSR. Location: Nucleus; Chromosome; Chromosome, centromere, kinetochore (UniProt). Locus 15q15.3 (HGNC).

Where it is found
  • Lung cancer: CIViC evidence names this disease
Class: transcription · Gene: TP53BP1 · 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:"TP53BP1" OR ABSTRACT:"TP53BP1" OR TITLE:"tumor protein p53 binding protein 1" OR ABSTRACT:"tumor protein p53 binding protein 1" OR TITLE:"TP53-binding protein 1" OR ABSTRACT:"TP53-binding protein 1" OR TITLE:"53BP1" OR ABSTRACT:"53BP1" OR TITLE:"p202" OR ABSTRACT:"p202" OR TITLE:"TDRD30" OR ABSTRACT:"TDRD30") 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 TP53BP1, 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/tp53bp1.json. Licence CC BY-NC 4.0.