The Tatton-Brown-Rahman Syndrome: A clinical study of 55 individuals with de novo constitutive DNMT3A variants

Tatton-Brown-Rahman syndrome (TBRS; OMIM 615879), also known as the DNMT3A-overgrowth syndrome, is an overgrowth intellectual disability syndrome first described in 2014 with a report of 13 individuals with constitutive heterozygous variants. Here we have undertaken a detailed clinical study of 55 i...

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Published in:	Wellcome open research Vol. 3; p. 46
Main Authors:	Tatton-Brown, Katrina, Zachariou, Anna, Loveday, Chey, Renwick, Anthony, Mahamdallie, Shazia, Aksglaede, Lise, Baralle, Diana, Barge-Schaapveld, Daniela, Blyth, Moira, Bouma, Mieke, Breckpot, Jeroen, Crabb, Beau, Dabir, Tabib, Cormier-Daire, Valerie, Fauth, Christine, Fisher, Richard, Gener, Blanca, Goudie, David, Homfray, Tessa, Hunter, Matthew, Jorgensen, Agnete, Kant, Sarina G, Kirally-Borri, Cathy, Koolen, David, Kumar, Ajith, Labilloy, Anatalia, Lees, Melissa, Marcelis, Carlo, Mercer, Catherine, Mignot, Cyril, Miller, Kathryn, Neas, Katherine, Newbury-Ecob, Ruth, Pilz, Daniela T, Posmyk, Renata, Prada, Carlos, Ramsey, Keri, Randolph, Linda M, Selicorni, Angelo, Shears, Deborah, Suri, Mohnish, Temple, I Karen, Turnpenny, Peter, Val Maldergem, Lionel, Varghese, Vinod, Veenstra-Knol, Hermine E, Yachelevich, Naomi, Yates, Laura, Rahman, Nazneen
Format:	Journal Article
Language:	English
Published:	England Wellcome Trust Limited 2018 F1000 Research Limited Wellcome
Subjects:	Genetics Intellectual disabilities Proteins Puberty Teenagers New Zealand Los Angeles California New York Colombia United Kingdom > UK United States > US Poland France Tatton-Brown-Rahman overgrowth intellectual disability DNMT3A
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Summary:	Tatton-Brown-Rahman syndrome (TBRS; OMIM 615879), also known as the DNMT3A-overgrowth syndrome, is an overgrowth intellectual disability syndrome first described in 2014 with a report of 13 individuals with constitutive heterozygous variants. Here we have undertaken a detailed clinical study of 55 individuals with variants, including the 13 previously reported individuals. An intellectual disability and overgrowth were reported in >80% of individuals with TBRS and were designated major clinical associations. Additional frequent clinical associations (reported in 20-80% individuals) included an evolving facial appearance with low-set, heavy, horizontal eyebrows and prominent upper central incisors; joint hypermobility (74%); obesity (weight ³2SD, 67%); hypotonia (54%); behavioural/psychiatric issues (most frequently autistic spectrum disorder, 51%); kyphoscoliosis (33%) and afebrile seizures (22%). One individual was diagnosed with acute myeloid leukaemia in teenage years. Based upon the results from this study, we present our current management for individuals with TBRS.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 No competing interests were disclosed.
ISSN:	2398-502X 2398-502X
DOI:	10.12688/wellcomeopenres.14430.1