OnCo

RRM2B (Ribonucleoside-diphosphate reductase subunit M2 B) is an enzyme. The public catalogues list it as a drug target and a DNA repair gene, and an approved or late-stage drug is recorded against it. Tied to Leukaemia, Non-Hodgkin lymphoma, Breast cancer and 5 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

Plays a pivotal role in cell survival by repairing damaged DNA in a p53/TP53-dependent manner. Supplies deoxyribonucleotides for DNA repair in cells arrested at G1 or G2. Contains an iron-tyrosyl free radical centre required for catalysis. Forms an active ribonucleotide reductase (RNR) complex with RRM1 which is expressed both in resting and proliferating cells in response to DNA damage. Location: Cytoplasm; Nucleus (UniProt). Locus 8q22.3 (HGNC).

Where it is found
  • Leukaemia: Open Targets association 0.61 with leukaemia (MONDO_0005059)
  • Non-Hodgkin lymphoma: Open Targets association 0.61 with non-Hodgkin lymphoma (MONDO_0018908)
  • Breast cancer: Open Targets association 0.60 with breast cancer (MONDO_0007254)
  • Lung cancer: Open Targets association 0.60 with lung cancer (MONDO_0008903)
  • Ovarian cancer: Open Targets association 0.58 with ovarian cancer (MONDO_0008170)
  • Myeloproliferative neoplasms: Open Targets association 0.58 with myeloproliferative neoplasm (MONDO_0020076)
Class: enzyme · Gene: RRM2B · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids
RRM2Bribonucleotide reductase regulatory TP53 inducible subunit M2B · 8q22.3HGNCEnsemblUniProtAlphaFold DBOpen TargetsCIViCOncoKBCOSMICcBioPortalDepMapHuman Protein AtlasNCBI GeneOMIM

Products by modality and phase

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No trial in the corpus names this target or one of its products.

Resistance routes

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No pathway diagram carries this target as a node.

Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"RRM2B" OR ABSTRACT:"RRM2B" OR TITLE:"ribonucleotide reductase regulatory TP53 inducible subunit M2B" OR ABSTRACT:"ribonucleotide reductase regulatory TP53 inducible subunit M2B" OR TITLE:"Ribonucleoside-diphosphate reductase subunit M2 B" OR ABSTRACT:"Ribonucleoside-diphosphate reductase subunit M2 B" OR TITLE:"p53R2" OR ABSTRACT:"p53R2") 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 RRM2B, 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/rrm2b.json. Licence CC BY-NC 4.0.