Abstract:
BACKGROUND:A three-generation Chinese family with Hailey-Hailey disease (HHD) was identified and characterized. The proband developed HHD with severe recurrent blisters and crusted erosions involving the body folds. Skin biopsy studies showed epidermal hyperkeratosis and defects in cell-to-cell adhesion. Three other members in the family were also affected with HHD and had the same clinical manifestations. The purpose of this study was to identify the pathogenic gene or mutation in the family. METHODS:All exons and exon-intron boundaries of ATP2C1 were polymerase chain reaction (PCR) amplified and sequenced with DNA samples from the proband. Restriction fragment length polymorphism (RFLP) analysis for the intron 23-exon 24 boundary of ATP2C1 was performed in all family members and in 100 normal control subjects. RESULTS:A novel 2-bp deletion (c.2251delGT) was detected in exon 24 of the ATP2C1 gene. The mutation was present in the three other affected family members and in two asymptomatic young carriers, but not in the other normal family members or the 100 normal controls. The mutation resulted in a frameshift change and led to the formation of a premature termination codon (PTC) four amino acid residues downstream from the sixth transmembrane domain. CONCLUSIONS:Our results indicate that the novel c.2251delGT (p.V751fs) mutation in the ATP2C1 gene is responsible for HHD in this Chinese family. This study expands the spectrum of ATP2C1 mutations associated with HHD.
journal_name
Int J Dermatoljournal_title
International journal of dermatologyauthors
Liu JZ,Yang T,Li X,Liu M,Wang QK,Liu JYdoi
10.1111/j.1365-4632.2009.03878.xsubject
Has Abstractpub_date
2009-01-01 00:00:00pages
47-51issue
1eissn
0011-9059issn
1365-4632pii
IJD3878journal_volume
48pub_type
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