{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T02:00:56Z","timestamp":1783562456351,"version":"3.55.0"},"reference-count":55,"publisher":"National Academy of Sciences","issue":"52","license":[{"start":{"date-parts":[[2023,12,19]],"date-time":"2023-12-19T00:00:00Z","timestamp":1702944000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100020082","name":"HHS | NIH | NCI | Center for Biomedical Informatics and Information Technology, National Cancer Institute","doi-asserted-by":"publisher","award":["R35-CA197569"],"award-info":[{"award-number":["R35-CA197569"]}],"id":[{"id":"10.13039\/100020082","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2023,12,26]]},"abstract":"<jats:p>\n                    Cancer genome sequencing consortiums have recently catalogued an abundance of somatic mutations, across a wide range of human cancers, in the chromatin-modifying enzymes that regulate gene expression. Defining the molecular mechanisms underlying the potentially oncogenic functions of these epigenetic mutations could serve as the basis for precision medicine approaches to cancer therapy. MLL4 encoded by the\n                    <jats:italic>KMT2D<\/jats:italic>\n                    gene highly mutated in a large number of human cancers, is a key histone lysine monomethyltransferase within the Complex of Proteins Associated with Set1 (COMPASS) family that regulates gene expression through enhancer function, potentially functioning as a tumor suppressor. We report that the\n                    <jats:italic>KMT2D<\/jats:italic>\n                    mutations which cause MLL4 protein truncation also alter MLL4\u2019s subcellular localization, resulting in loss-of-function in the nucleus and gain-of-function in the cytoplasm. We demonstrate that isogenic correction of\n                    <jats:italic>KMT2D<\/jats:italic>\n                    truncation mutation rescues the aberrant localization phenotype and restores multiple regulatory functions of MLL4, including COMPASS integrity\/stabilization, histone H3K4 mono-methylation, enhancer activation, and therefore transcriptional regulation. Moreover, isogenic correction diminishes the sensitivity of\n                    <jats:italic>KMT2D<\/jats:italic>\n                    -mutated cancer cells to targeted metabolic inhibition. Using immunohistochemistry, we identified that cytoplasmic MLL4 is unique to the tissue of bladder cancer patients with\n                    <jats:italic>KMT2D<\/jats:italic>\n                    truncation mutations. Using a preclinical carcinogen model of bladder cancer in mouse, we demonstrate that truncated cytoplasmic MLL4 predicts response to targeted metabolic inhibition therapy for bladder cancer and could be developed as a biomarker for\n                    <jats:italic>KMT2D<\/jats:italic>\n                    -mutated cancers. We also highlight the broader potential for prognosis, patient stratification and treatment decision-making based on\n                    <jats:italic>KMT2D<\/jats:italic>\n                    mutation status in MLL4 truncation-relevant diseases, including human cancers and Kabuki Syndrome.\n                  <\/jats:p>","DOI":"10.1073\/pnas.2310063120","type":"journal-article","created":{"date-parts":[[2023,12,19]],"date-time":"2023-12-19T13:37:20Z","timestamp":1702993040000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":17,"title":["Somatic mutations of MLL4\/COMPASS induce cytoplasmic localization providing molecular insight into cancer prognosis and treatment"],"prefix":"10.1073","volume":"120","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1089-2375","authenticated-orcid":false,"given":"Zibo","family":"Zhao","sequence":"first","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern 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School of Medicine, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-0078-3071","authenticated-orcid":false,"given":"Khyati A.","family":"Meghani","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Department of Urology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7390-4121","authenticated-orcid":false,"given":"Sarah R.","family":"Gold","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-4254-7680","authenticated-orcid":false,"given":"Yanni","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Department of Urology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-8456-5878","authenticated-orcid":false,"given":"Luke St","family":"John","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-9230-4654","authenticated-orcid":false,"given":"Jun","family":"Qian","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Department of Urology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2659-7250","authenticated-orcid":false,"given":"Jacob M.","family":"Zeidner","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611"},{"name":"Simpson Querrey Institute for Epigenetics, Northwestern University Feinberg School of Medicine, Chicago, IL 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