Document Detail


The original Lujan syndrome family has a novel missense mutation (p.N1007S) in the MED12 gene.
MedLine Citation:
PMID:  17369503     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A novel missense mutation in the mediator of RNA polymerase II transcription subunit 12 (MED12) gene has been found in the original family with Lujan syndrome and in a second family (K9359) that was initially considered to have Opitz-Kaveggia (FG) syndrome. A different missense mutation in the MED12 gene has been reported previously in the original family with FG syndrome and in five other families with compatible clinical findings. Neither sequence alteration has been found in over 1400 control X chromosomes. Lujan (Lujan-Fryns) syndrome is characterised by tall stature with asthenic habitus, macrocephaly, a tall narrow face, maxillary hypoplasia, a high narrow palate with dental crowding, a small or receding chin, long hands with hyperextensible digits, hypernasal speech, hypotonia, mild-to-moderate mental retardation, behavioural aberrations and dysgenesis of the corpus callosum. Although Lujan syndrome has not been previously considered to be in the differential diagnosis of FG syndrome, there are some overlapping clinical manifestations. Specifically, these are dysgenesis of the corpus callosum, macrocephaly/relative macrocephaly, a tall forehead, hypotonia, mental retardation and behavioural disturbances. Thus, it seems that these two X-linked mental retardation syndromes are allelic, with mutations in the MED12 gene.
Authors:
Charles E Schwartz; Patrick S Tarpey; Herbert A Lubs; Alain Verloes; Melanie M May; Hiba Risheg; Michael J Friez; P Andrew Futreal; Sarah Edkins; Jon Teague; Sylvain Briault; Cindy Skinner; Astrid Bauer-Carlin; Richard J Simensen; Sumy M Joseph; Julie R Jones; Josef Gecz; Michael R Stratton; F Lucy Raymond; Roger E Stevenson
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Publication Detail:
Type:  Comparative Study; Letter; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2007-03-16
Journal Detail:
Title:  Journal of medical genetics     Volume:  44     ISSN:  1468-6244     ISO Abbreviation:  J. Med. Genet.     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-07-02     Completed Date:  2008-03-06     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  2985087R     Medline TA:  J Med Genet     Country:  England    
Other Details:
Languages:  eng     Pagination:  472-7     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Abnormalities, Multiple / genetics*,  pathology
Humans
Male
Mediator Complex
Mental Retardation, X-Linked / genetics*,  pathology
Mutation, Missense / genetics*
Pedigree
Phenotype*
Receptors, Thyroid Hormone / genetics*
Grant Support
ID/Acronym/Agency:
HD 26202/HD/NICHD NIH HHS; //Wellcome Trust
Chemical
Reg. No./Substance:
0/MED12 protein, human; 0/Mediator Complex; 0/Receptors, Thyroid Hormone
Comments/Corrections

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