[The mutation R672H in SCN4A gene exists in Chinese patients with hypokalaemic periodic paralysis]

Zhonghua Yi Xue Za Zhi. 2006 Mar 21;86(11):724-7.
[Article in Chinese]

Abstract

Objective: Mutation screening was performed on two Chinese families with HOKPP to locat the corresponding mutations and to specify the clinical features associated with the mutation.

Methods: Target-exon PCR and direct sequencing were used to screen mutation in the CACNA1S and SCN4A gene of all numbers of the two families. The clinical features of patients were summary.

Results: A heterozygous point mutation 2015G-->A causing R672H in the SCN4A was found in five patients and five normal relatives of the two families. Features of R672H mutation are incomplete penetrance, especially non-penetrance of phenotype in women and potassium is effective, but acetazolamide is not.

Conclusion: The SCN4A R672H mutation exists in the Chinese family with HOKPP.

Publication types

  • Case Reports
  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Asian Continental Ancestry Group / genetics
  • Base Sequence
  • Calcium Channels / genetics*
  • China
  • DNA Mutational Analysis
  • Female
  • Humans
  • Hypokalemic Periodic Paralysis / ethnology
  • Hypokalemic Periodic Paralysis / genetics*
  • Male
  • Middle Aged
  • Mutation, Missense*
  • Pedigree
  • Polymerase Chain Reaction
  • Sodium Channels / genetics*

Substances

  • Calcium Channels
  • Sodium Channels