OnCo

KMT2B (Histone-lysine N-methyltransferase 2B) is a gene whose normal job is to hold cell growth in check. The public catalogues list it as a drug target, a tumour suppressor and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Hepatocellular carcinoma, Vulvar cancer, Melanoma and 1 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

Histone methyltransferase that catalyses methyl group transfer from S-adenosyl-L-methionine to the epsilon-amino group of 'Lys-4' of histone H3 (H3K4) via a non-processive mechanism. Part of chromatin remodeling machinery predominantly forms H3K4me1 and H3K4me2 methylation marks at active chromatin sites where transcription and DNA repair take place. Likely plays a redundant role with KMT2C in enriching H3K4me1 marks on primed and active enhancer elements. Plays a central role in beta-globin locus transcription regulation by being recruited by NFE2. Plays an important role in controlling bulk H3K4me during oocyte growth and preimplantation development. Required during the transcriptionally active period of oocyte growth for the establishment and/or maintenance of bulk H3K4 trimethylation (H3K4me3), global transcriptional silencing that preceeds resumption of meiosis, oocyte survival and normal zygotic genome activation. Location: Nucleus (UniProt). Locus 19q13.12 (HGNC).

Where it is found
  • Hepatocellular carcinoma: IntOGen driver in 1 cohort (HCC)
  • Vulvar cancer: IntOGen driver in 1 cohort (VULVA)
  • Melanoma: CIViC evidence names this disease
  • Non-small-cell lung cancer: CIViC evidence names this disease
Class: tumor suppressor · Gene: KMT2B · 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:"KMT2B" OR ABSTRACT:"KMT2B" OR TITLE:"lysine methyltransferase 2B" OR ABSTRACT:"lysine methyltransferase 2B" OR TITLE:"Histone-lysine N-methyltransferase 2B" OR ABSTRACT:"Histone-lysine N-methyltransferase 2B" OR TITLE:"KIAA0304" OR ABSTRACT:"KIAA0304" OR TITLE:"MLL2" OR ABSTRACT:"MLL2" OR TITLE:"TRX2" OR ABSTRACT:"TRX2") 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 KMT2B, 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/kmt2b.json. Licence CC BY-NC 4.0.