Abstract

CLARK FEOKTISTOVA, Yulia et al. Identification of the c.2448-25G>A Polymorphism in Patients Clinically Diagnosed with Wilson’s Disease. Medisur [online]. 2015, vol.13, n.5, pp. 617-621. ISSN 1727-897X.

Background: Wilson’s disease is characterized by copper accumulation in the liver, brain and cornea. It is caused by mutations in the ATP7B gene. Several polymorphisms in the ATP7B gene have been reported in the literature.Objective: to identify conformational changes in the fragment comprising intron 9-exon 10 for detecting the c.2448-25G> A polymorphism in the ATP7B gene of Cuban patients clinically diagnosed with Wilson’s disease.Methods: a descriptive study including 100 patients with clinical diagnosis of Wilson’s disease was conducted at the National Medical Genetics Center from 2008 to 2012. The polymerase chain reaction was used to amplify the fragment of interest and the single-strand conformation polymorphism was applied in the intron 9-exon 10 region of the ATP7B gene to identify conformational changes. Presence of the c.2448-25G> A polymorphism was detected by sequencing this fragment.Results: the conformational change called b corresponded to the c.2448-25G> A polymorphism in heterozygous state. The allele frequency of the c.2448-25G> A polymorphism in 100 Cuban patients clinically diagnosed with Wilson’s disease was 8.5%. The most common manifestations in patients with this polymorphism were related to the liver.Conclusion: the c.2448-25G> A polymorphism was identified in Cuba for the first time, which will enable molecular studies by indirect methods.

Keywords : genes; hepatolenticular degeneration; polymorphism, genetic; cuba Limits: human; adult.

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