Linked Life Data

17922851

Source:http://linkedlifedata.com/resource/pubmed/id/17922851

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2008-2-13
pubmed:abstractText
Hypophosphatasia is a rare inherited bone disease caused by mutations in the alkaline phosphatase liver-type gene (ALPL) gene, with extensive allelic heterogeneity leading to a range of clinical phenotypes. We report here a patient who died from severe lethal hypophosphatasia, who was compound heterozygous for the mutation c.1133A>T (D361V) and the newly detected missense mutation c791A>G, and whose parents were both healthy. Because the c.1133A>T (D361V) mutation was previously reported to have a dominant-negative effect and to be responsible for the uncommon perinatal benign form of the disease, we studied the expression of the ALPL gene in this family. Analysis at the messenger RNA (mRNA) level, both quantitative and qualitative, showed that the paternal c.1133A>T (D361V) mutation was associated with over-expression of the ALPL gene and that the maternal c.791A>G mutation lead to complete skipping of exon 7. The results provide an explanation of the lethal phenotype in the patient where the two ALPL alleles are non-functional and in the asymptomatic father where over-expression of the normal allele could counteract the effect of the c.1133A>T (D361V) mutation by providing an increased level of normal mRNA. This may also explain the variable expression of hypophosphatasia observed in parents of patients with the perinatal benign form.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1399-0004
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
73
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
245-50
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
A case of lethal hypophosphatasia providing new insights into the perinatal benign form of hypophosphatasia and expression of the ALPL gene.
pubmed:affiliation
Equipe Structure-Fonction et Génétique, EA 2493, CHU Paris Ile de France Ouest, Université de Versailles-Saint Quentin en Yvelines, France. isabelle.brun-heath@cytogene.uvsq.fr
pubmed:publicationType
Journal Article, Case Reports, Research Support, Non-U.S. Gov't