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Hailey-Hailey Disease: Molecular and Clinical Characterization of Novel Mutations in the ATP2C1 Gene

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons50580

Sudbrak,  Ralf
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Zitation

Dobson-Stone, C., Fairclough, R., Dunne, E., Brown, J., Dissanayake, M., Munro, C. S., et al. (2002). Hailey-Hailey Disease: Molecular and Clinical Characterization of Novel Mutations in the ATP2C1 Gene. Journal of Investigative Dermatology, 118(2), 338-343.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-8C46-D
Zusammenfassung
Hailey-Hailey disease is an autosomal dominant skin disorder characterized by suprabasal cell separation (acantholysis) of the epidermis. Mutations in ATP2C1, the gene encoding a novel, P-type Ca2+-transport ATPase, were recently found to cause HaileyHailey disease. In this study, we used conformation-sensitive gel electrophoresis to screen all 28 translated exons of ATP2C1 in 24 HaileyHailey disease families and three sporadic cases with the disorder. We identified 22 different mutations, 18 of which have not previously been reported, in 25 probands. The novel mutations comprise three nonsense, six insertion/deletion, three splice-site, and six missense mutations and are distributed throughout the ATP2C1 gene. Six mutations were found in multiple families investigated here or in our previous study. Haplotype analysis revealed that two of these are recurrent mutations that have not been inherited from a common ancestor. Comparison between genotype and phenotype in 23 families failed to yield any clear correlation between the nature of the mutation and clinical features of HaileyHailey disease. The extensive interfamilial and intrafamilial phenotypic variability observed suggests that modifying genes and/or environmental factors may greatly influence the clinical features of this disease.