{"entity":{"id":"dnmt3b","kind":"target","name":"DNMT3B","aka":["DNA methyltransferase 3 beta","DNA (cytosine-5)-methyltransferase 3B"],"tldr":"DNMT3B (DNA (cytosine-5)-methyltransferase 3B) 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.","summary":"Required for genome-wide de novo methylation and is essential for the establishment of DNA methylation patterns during development. DNA methylation is coordinated with methylation of histones. May preferentially methylates nucleosomal DNA within the nucleosome core region.\n\nOpen Targets scores its association with cancer at 0.58 (direct and indirect evidence; datatypes literature 0.99, affected pathway 0.76, genetic association 0.54).","asOf":"2026-09-23","links":[{"label":"HGNC HGNC:2979","url":"https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:2979"},{"label":"UniProt Q9UBC3","url":"https://www.uniprot.org/uniprotkb/Q9UBC3/entry"},{"label":"NCBI Gene 1789","url":"https://www.ncbi.nlm.nih.gov/gene/1789"},{"label":"Ensembl ENSG00000088305","url":"https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000088305"}],"tags":["cancer-genes-wave"],"related":["open-targets"],"cancers":[],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":["Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: none stated by the sources. Evidence tier \"association-only\" is the strongest of those signals.","Prevalence not recorded: none of the sources gives a positivity rate."],"provenance":{"editedBy":"scripts/fetch-cancer-genes.ts (CIViC, Open Targets, IntOGen, HGNC, UniProt)","editedOn":"2026-09-23"},"symbol":"DNMT3B","role":[],"evidenceTier":"association-only","sources":[{"label":"HGNC HGNC:2979","url":"https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:2979","note":"approved symbol, name, aliases, locus and cross-references (hgnc_complete_set.txt)"},{"label":"UniProt Q9UBC3","url":"https://www.uniprot.org/uniprotkb/Q9UBC3/entry","note":"protein name, function text, keywords and locations (REST API)"},{"label":"Open Targets ENSG00000088305","url":"https://platform.opentargets.org/target/ENSG00000088305/associations","note":"association with cancer (MONDO_0004992) 0.58;  (GraphQL API, CC0)"}],"hgnc":"HGNC:2979","ensembl":"ENSG00000088305","uniprot":"Q9UBC3","entrez":"1789","biology":"Required for genome-wide de novo methylation and is essential for the establishment of DNA methylation patterns during development. DNA methylation is coordinated with methylation of histones. May preferentially methylates nucleosomal DNA within the nucleosome core region. May function as transcriptional co-repressor by associating with CBX4 and independently of DNA methylation. Seems to be involved in gene silencing. In association with DNMT1 and via the recruitment of CTCFL/BORIS, involved in activation of BAG1 gene expression by modulating dimethylation of promoter histone H3 at H3K4 and H3K9. Location: Nucleus (UniProt). Locus 20q11.21 (HGNC).","whereFound":[],"targetClass":"transcription","prevalence":[]},"route":"/targets/dnmt3b/","neighbours":{"collection":[{"id":"open-targets","kind":"collection","name":"Open Targets Platform","route":"/collections/open-targets/"}]}}