Novel ABCA1 compound variant associated with HDL cholesterol deficiency

Seung Ho Hong, Jeffrey Rhyne, Karen Zeller, Michael Miller

Research output: Contribution to journalArticle

Abstract

The recent discovery of an ATP-binding cassette transporter, ABCA1, as an important regulator of high density lipoprotein (HDL) metabolism and reverse cholesterol transport has facilitated the identification of novel variants associated with HDL cholesterol deficiency states. We identified a subject with HDL cholesterol deficiency (4 mg/dl) who developed and died of complications related to cerebral amyloid angiopathy (CAA). The proband had a compound heterozygous mutation. One mutation was a G3295T substitution with conversion of asparagine to tyrosine (D1099Y) in ABCA1. The single-base substitution at codon 1099 resulted in the abolition of an RsaI cleavage site. The proband and affected individuals having another mutation were heterozygotes for T5966C with phenylalanine converted to serine (F2009S). The presence of the T5966C mutation was detected by restriction digestion with HinfI. These variants were not identified in over 400 chromosomes of healthy subjects. In the kindred, family members heterozygous for the ABCA1 variant exhibited low levels of HDL cholesterol. Direct sequencing of all coding regions and splice site junctions of other HDL candidate genes revealed no additional mutations, indicating that combined defective ABCA1 alleles may result in familial HDL deficiency.

Original languageEnglish (US)
Pages (from-to)60-64
Number of pages5
JournalBiochimica et Biophysica Acta - Molecular Basis of Disease
Volume1587
Issue number1
DOIs
StatePublished - May 21 2002
Externally publishedYes

Fingerprint

HDL Cholesterol
Mutation
HDL Lipoproteins
Cerebral Amyloid Angiopathy
ATP-Binding Cassette Transporters
Asparagine
Heterozygote
Phenylalanine
Codon
Serine
Tyrosine
Digestion
Healthy Volunteers
Chromosomes
Alleles
Cholesterol
Familial HDL deficiency
Genes

Keywords

  • ABCA1
  • HDL cholesterol deficiency
  • Mutation

ASJC Scopus subject areas

  • Molecular Biology
  • Molecular Medicine
  • Biophysics

Cite this

Novel ABCA1 compound variant associated with HDL cholesterol deficiency. / Ho Hong, Seung; Rhyne, Jeffrey; Zeller, Karen; Miller, Michael.

In: Biochimica et Biophysica Acta - Molecular Basis of Disease, Vol. 1587, No. 1, 21.05.2002, p. 60-64.

Research output: Contribution to journalArticle

Ho Hong, Seung ; Rhyne, Jeffrey ; Zeller, Karen ; Miller, Michael. / Novel ABCA1 compound variant associated with HDL cholesterol deficiency. In: Biochimica et Biophysica Acta - Molecular Basis of Disease. 2002 ; Vol. 1587, No. 1. pp. 60-64.
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