Clinical and pathologic findings of korean patients with ryr1-related congenital myopathy

Ha Neul Jeong, Hyung Jun Park, Jung Hwan Lee, Ha Young Shin, Se Hoon Kim, Seung Min Kim, Young Chul Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background and Purpose This study was designed to investigate clinical and pathologic characteristics of five Korean patients with RYR1-related congenital myopathy (CM). Methods Five patients from unrelated families were diagnosed with RYR1-related CM via direct or targeted sequencing of RYR1. Their clinical, mutational, and pathologic findings were then analyzed. Results Seven different mutations were identified, including two novel mutations: c.5915A> T and c.12250C>T. All of the patients presented at infancy with proximal dominant weakness and delayed motor milestones. Other clinical findings were scoliosis in three patients, winged scapula in two, hip dislocation in one, and pectus excavatum in one. Ophthalmoplegia was observed in one patient with a novel recessive mutation. Two of three muscle specimens revealed a myopathic pattern with core. Conclusions We have identified a novel compound heterozygous RYR1 mutation and demonstrated clinical and pathologic findings in five Korean patients with RYR1-related CM.

Original languageEnglish
Pages (from-to)58-65
Number of pages8
JournalJournal of Clinical Neurology (Korea)
Volume14
Issue number1
DOIs
Publication statusPublished - 2018 Jan

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

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