OnCo

L3MBTL3 (Lethal(3)malignant brain tumour-like protein 3) is a protein that switches other genes on and off. In the public catalogues the evidence so far is association rather than a proven role. Tied to Breast 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

Is a negative regulator of Notch target genes expression, required for RBPJ-mediated transcriptional repression. It recruits KDM1A to Notch-responsive elements and promotes KDM1A-mediated H3K4me demethylation. Involved in the regulation of ubiquitin-dependent degradation of a set of methylated non-histone proteins, including SOX2, DNMT1 and E2F1. It acts as an adapter recruiting the CRL4-DCAF5 E3 ubiquitin ligase complex to methylated target proteins. Required for normal maturation of myeloid progenitor cells. Location: Nucleus (UniProt). Locus 6q23.1 (HGNC).

Where it is found
  • Breast cancer: Open Targets association 0.51 with breast cancer (MONDO_0007254)
Class: transcription · Gene: L3MBTL3 · 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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No trial in the corpus names this target or one of its products.

Resistance routes

Unaddressed routes →

The resistance atlas has no route that names this target.

No pathway diagram carries this target as a node.

Companion diagnostics

Assay registry →

No companion diagnostic in the registry measures this target.

Preclinical models

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No model entry for this target yet; check the cancer entries on the models page.

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Literature

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Open in Europe PMC

Query for this target: (TITLE:"L3MBTL3" OR ABSTRACT:"L3MBTL3" OR TITLE:"L3MBTL histone methyl-lysine binding protein 3" OR ABSTRACT:"L3MBTL histone methyl-lysine binding protein 3" OR TITLE:"Lethal 3 malignant brain tumor-like protein 3" OR ABSTRACT:"Lethal 3 malignant brain tumor-like protein 3" OR TITLE:"KIAA1798" OR ABSTRACT:"KIAA1798") 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 L3MBTL3, 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/l3mbtl3.json. Licence CC BY-NC 4.0.