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Sawicka J, Kutkowska-Kaźmierczak A, Woźniak K, Tysarowski A, Osipowicz K, Poznański J, Rygiel AM, Braun-Walicka N, Niepokój K, Bal J, Kowalewski C, Wertheim-Tysarowska K. Novel and recurrent variants of ATP2C1 identified in patients with Hailey-Hailey disease. J Appl Genet 2020; 61:187-193. [PMID: 31983024 PMCID: PMC7148260 DOI: 10.1007/s13353-020-00538-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 10/22/2019] [Accepted: 01/03/2020] [Indexed: 11/30/2022]
Abstract
Hailey-Hailey disease (HHD) is a rare, late-onset autosomal dominant genodermatosis characterized by blisters, vesicular lesions, crusted erosions, and erythematous scaly plaques predominantly in intertriginous regions. HHD is caused by ATP2C1 mutations. About 180 distinct mutations have been identified so far; however, data of only few cases from Central Europe are available. The aim was to analyze the ATP2C1 gene in a cohort of Polish HHD patients. A group of 18 patients was enrolled in the study based on specific clinical symptoms. Mutations were detected using Sanger or next generation sequencing. In silico analysis was performed by prediction algorisms and dynamic structural modeling. In two cases, mRNA analysis was performed to confirm aberrant splicing. We detected 13 different mutations, including 8 novel, 2 recurrent (p.Gly850Ter and c.325-3 T > G), and 6 sporadic (c.423-1G > T, c.899 + 1G > A, p.Leu539Pro, p.Thr808TyrfsTer16, p.Gln855Arg and a complex allele: c.[1610C > G;1741 + 3A > G]). In silico analysis shows that all novel missense variants are pathogenic or likely pathogenic. We confirmed pathogenic status for two novel variants c.325-3 T > G and c.[1610C > G;1741 + 3A > G] by mRNA analysis. Our results broaden the knowledge about genetic heterogeneity in Central European patients with ATP2C1 mutations and also give further evidence that careful and multifactorial evaluation of variant pathogenicity status is essential.
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Affiliation(s)
- J Sawicka
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - A Kutkowska-Kaźmierczak
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - K Woźniak
- Department of Dermatology and Immunodermatology, Medical University of Warsaw, Koszykowa 82A, 00-001, Warsaw, PL, Poland
| | - A Tysarowski
- Translational and Molecular Oncology Department, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, W. K. Roentgena 5, 02-781, Warsaw, PL, Poland
| | - K Osipowicz
- Department of Dermatology and Immunodermatology, Medical University of Warsaw, Koszykowa 82A, 00-001, Warsaw, PL, Poland
| | - J Poznański
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5A, 02-106, Warsaw, PL, Poland
| | - A M Rygiel
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - N Braun-Walicka
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - K Niepokój
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - J Bal
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland
| | - C Kowalewski
- Department of Dermatology and Immunodermatology, Medical University of Warsaw, Koszykowa 82A, 00-001, Warsaw, PL, Poland
| | - K Wertheim-Tysarowska
- Medical Genetics Department, Institute of Mother and Child, Kasprzaka 17a, 01-211, Warsaw, PL, Poland.
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