New mutation (T1232P) of the ATP-7B gene associated with neurologic and neuropsychiatric dominance onset of Wilson's disease in three unrelated Colombian kindred.

Abstract

Wilson's disease is an autosomal recessive disorder of hepatic copper metabolism caused by mutations in a gene encoding a copper-transporting P-type ATPase. We report the clinical and molecular characterization of six members from three unrelated Colombian kindred. Completed sequence DNA analysis linked to the gene ATP-7B from patient wd-1 revealed a novel A to C transversion in exon 17 at position 3856 (A3856C) of the ATP-7B mRNA resulting in a threonine for proline substitution at position 1232 of the ATP-7B protein (T1232P). Additionally, two novel polymorphisms were detected (2785G:Gly875 in exon 11; and intron at +38 a > c:tgcgcccga in exon 19). All affected individuals were homozygous for the T1232P mutation and displayed neurologic and neuropsychiatric dominant onset. This work expands the knowledge about the number, type, and implication of mutations in WD.

• Authors: Carlos Velez-Pardo, Marlene Jimenez Del Rio, Sonia Moreno, Liliana Ramírez-Gomez, Gonzalo Correa, Francisco Lopera
• Journal: Neuroscience letters (Neurosci Lett) Vol. 367 Issue 3 Pg. 360-4 (Sep 09 2004) ISSN: 0304-3940 [Print] Ireland
• PMID: 15337266 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Cation Transport Proteins
• Threonine
• Proline
• Adenosine Triphosphatases
• Copper-Transporting ATPases

Topics

• Adenosine Triphosphatases (genetics)
• Adolescent
• Adult
• Cation Transport Proteins (genetics)
• Colombia (ethnology)
• Copper-Transporting ATPases
• DNA Mutational Analysis (methods)
• Exons
• Female
• Founder Effect
• Hepatolenticular Degeneration (genetics)
• Humans
• Male
• Molecular Sequence Data
• Mutation
• Polymorphism, Single-Stranded Conformational
• Proline (genetics)
• Threonine (genetics)