ABCC6 mutations in pseudoxanthoma elasticum: an update including eight novel ones

Pseudoxanthoma elasticum (PXE) is an autosomal recessive disorder of connective tissue, affecting the retina, the skin, and the cardiovascular system. PXE is caused by mutations in ABCC6. Up to now, the literature reports that there are 180 different ABCC6 mutations in PXE. The purpose of this paper...

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Bibliographic Details
Published in:Molecular vision 2008-01, Vol.14, p.118-124
Main Authors: Plomp, Astrid S, Florijn, Ralph J, Ten Brink, Jacoline, Castle, Bruce, Kingston, Helen, Martín-Santiago, Ana, Gorgels, Theo G M F, de Jong, Paulus T V M, Bergen, Arthur A B
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Base Sequence
Chromatography, High Pressure Liquid - methods
Conserved Sequence
Female
Gene Deletion
Humans
Male
Multidrug Resistance-Associated Proteins - genetics
Mutation
Mutation, Missense
Pseudoxanthoma Elasticum - genetics
Pseudoxanthoma Elasticum - pathology
Retina - pathology
Skin - pathology
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Summary:Pseudoxanthoma elasticum (PXE) is an autosomal recessive disorder of connective tissue, affecting the retina, the skin, and the cardiovascular system. PXE is caused by mutations in ABCC6. Up to now, the literature reports that there are 180 different ABCC6 mutations in PXE. The purpose of this paper is to report eight novel mutations in ABCC6 and to update the spectrum and frequency of ABCC6 mutations in PXE patients. Eye, skin, and DNA examinations were performed using standard methodologies. We newly investigated the gene in 90 probands by denaturing high-performance liquid chromatography (dHPLC) and direct sequencing. We examined a total of 166 probands. Eight novel ABCC6 mutations (c.1685T>C, p.Met562Thr; c.2477T>C, p.Leu826Pro; c.2891G>C, p.Arg964Pro; c.3207C>A, p.Tyr1069X; c.3364delT, p.Ser1122fs; c.3717T>G, p.Tyr1293X; c.3871G>A, p.Ala1291Thr; c.4306_4312del, p.Thr1436fs) were found in seven unrelated patients. Currently, our mutation detection score is at least one ABCC6 mutation in 87% of patients with a clinical diagnosis of PXE. Our results support that ABCC6 is the most important, and probably the only, causative gene of PXE. In total, 188 different ABCC6 mutations have now been reported in PXE in the literature.
ISSN:1090-0535