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Mutations in the histone methyltransferase gene KMT2B cause complex early-onset dystonia

Meyer, Esther, Carss, Keren J., Rankin, Julia, Nichols, John M. E., Grozeva, Detelina ORCID:, Joseph, Agnel P., Mencacci, Niccolo E., Papandreou, Apostolos, Ng, Joanne, Barral, Serena, Ngoh, Adeline, Ben-Pazi, Hilla, Willemsen, Michel A., Arkadir, David, Barnicoat, Angela, Bergman, Hagai, Bhate, Sanjay, Boys, Amber, Darin, Niklas, Foulds, Nicola, Gutowski, Nicholas, Hills, Alison, Houlden, Henry, Hurst, Jane A., Israel, Zvi, Kaminska, Margaret, Limousin, Patricia, Lumsden, Daniel, McKee, Shane, Misra, Shibalik, Mohammed, Shekeeb S., Nakou, Vasiliki, Nicolai, Joost, Nilsson, Magnus, Pall, Hardev, Peall, Kathryn J. ORCID:, Peters, Gregory B., Prabhakar, Prab, Reuter, Miriam S., Rump, Patrick, Segel, Reeval, Sinnema, Margje, Smith, Martin, Turnpenny, Peter, White, Susan M., Wieczorek, Dagmar, Wiethoff, Sarah, Wilson, Brian T., Winter, Gidon, Wragg, Christopher, Pope, Simon, Heales, Simon J. H., Morrogh, Deborah, Pittman, Alan, Carr, Lucinda J., Perez-Dueñas, Belen, Lin, Jean-Pierre, Reis, Andre, Gahl, William A., Toro, Camilo, Bhatia, Kailash P., Wood, Nicholas W., Kamsteeg, Erik-Jan, Chong, Wui K., Gissen, Paul, Topf, Maya, Dale, Russell C., Chubb, Jonathan R., Raymond, F. Lucy and Kurian, Manju A. 2017. Mutations in the histone methyltransferase gene KMT2B cause complex early-onset dystonia. Nature Genetics 49 , pp. 223-237. 10.1038/ng.3740

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Histone lysine methylation, mediated by mixed-lineage leukemia (MLL) proteins, is now known to be critical in the regulation of gene expression, genomic stability, cell cycle and nuclear architecture. Despite MLL proteins being postulated as essential for normal development, little is known about the specific functions of the different MLL lysine methyltransferases. Here we report heterozygous variants in the gene KMT2B (also known as MLL4) in 27 unrelated individuals with a complex progressive childhood-onset dystonia, often associated with a typical facial appearance and characteristic brain magnetic resonance imaging findings. Over time, the majority of affected individuals developed prominent cervical, cranial and laryngeal dystonia. Marked clinical benefit, including the restoration of independent ambulation in some cases, was observed following deep brain stimulation (DBS). These findings highlight a clinically recognizable and potentially treatable form of genetic dystonia, demonstrating the crucial role of KMT2B in the physiological control of voluntary movement.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Additional Information: Consortium co-authors: UK10K Consortium, Deciphering Developmental Disorders Study, NIHR BioResource Rare Diseases Consortium
Publisher: Nature
ISSN: 1061-4036
Date of First Compliant Deposit: 2 March 2017
Date of Acceptance: 14 November 2016
Last Modified: 06 Nov 2023 18:50

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