Linked Life Data

7670500

Source:http://linkedlifedata.com/resource/pubmed/id/7670500

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-10-18
pubmed:databankReference
pubmed:abstractText
Nearly all cases of fragile X syndrome result from expansion of a CGG trinucleotide repeat found in the 5' untranslated portion of the FMR1 gene. Methylation of the expanded repeats correlates with down-regulation of transcription of FMR1; thus fragile X syndrome is postulated to be due to a loss of function of the FMR1 gene product, and this has been demonstrated at the protein level. However, the nature of the mutation offers the possibility of methylation spreading to adjacent genes with consequent loss of expression and contribution to the phenotype. Deletions of FMR1 and flanking sequence (some of substantial size) have been reported in patients with phenotypes consistent with a diagnosis of fragile X-syndrome, however, none is strictly intragenic. We report here the identification of two different intragenic loss of function mutations in FMR1: a single de novo nucleotide deletion in a young male patient (IJ) and an inherited two basepair change in an Adult male (SD), each with classical features of fragile X syndrome.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1061-4036
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:geneSymbol
FMR1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
483-5
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Intragenic loss of function mutations demonstrate the primary role of FMR1 in fragile X syndrome.
pubmed:affiliation
Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Case Reports