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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2010-10-21
pubmed:abstractText
Autosomal dominant hypercholesterolemia (ADH) is characterized by isolated increase in plasmatic low-density lipoprotein (LDL) cholesterol levels associated with high risk of premature cardiovascular disease. Mutations in LDLR, APOB, and PCSK9 genes have been shown to cause ADH. We now report further genetic heterogeneity of ADH through the study of a large French family in which the involvement of these three genes was excluded. A genome-wide scan mapped the disease-causing gene, named HCHOLA4, at 16q22.1 in a 7.89-Mb interval containing 154 genes with a maximum LOD score of 3.9. To reduce the linked region, we genotyped 18 smaller non-LDLR/non-APOB/non-PCSK9-ADH families at the HCHOLA4 locus. Six families did not exclude linkage to the locus, but none allowed reduction of the disease interval. The 154 regional genes were sorted according to the function of the encoded protein and tissue expression profiles, and 57 genes were analyzed through sequencing of their coding region and close flanking intronic parts. No disease-causing mutation was identified in these families, particularly in the LCAT gene. Finally, our results also show the existence of other ADH genes as nine families were neither linked to LDLR, APOB, and PCSK9 genes nor to the new HCHOLA4 locus.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1476-5438
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1236-42
pubmed:dateRevised
2011-11-1
pubmed:meshHeading
pubmed-meshheading:20571503-Adolescent, pubmed-meshheading:20571503-Adult, pubmed-meshheading:20571503-Aged, 80 and over, pubmed-meshheading:20571503-Child, pubmed-meshheading:20571503-Child, Preschool, pubmed-meshheading:20571503-Chromosome Mapping, pubmed-meshheading:20571503-Chromosomes, Human, Pair 16, pubmed-meshheading:20571503-Family Health, pubmed-meshheading:20571503-Female, pubmed-meshheading:20571503-France, pubmed-meshheading:20571503-Genetic Predisposition to Disease, pubmed-meshheading:20571503-Genome-Wide Association Study, pubmed-meshheading:20571503-Humans, pubmed-meshheading:20571503-Hyperlipoproteinemia Type II, pubmed-meshheading:20571503-Lod Score, pubmed-meshheading:20571503-Male, pubmed-meshheading:20571503-Middle Aged, pubmed-meshheading:20571503-Pedigree, pubmed-meshheading:20571503-Young Adult
pubmed:year
2010
pubmed:articleTitle
A fourth locus for autosomal dominant hypercholesterolemia maps at 16q22.1.
pubmed:affiliation
INSERM U781, Université Paris Descartes, Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't