Dominant and recessive RYR1 mutations in adults with core lesions and mild muscle symptoms.
Article Details
- CitationCopy to clipboard
Duarte ST, Oliveira J, Santos R, Pereira P, Barroso C, Conceicao I, Evangelista T
Dominant and recessive RYR1 mutations in adults with core lesions and mild muscle symptoms.
Muscle Nerve. 2011 Jul;44(1):102-8. doi: 10.1002/mus.22009.
- PubMed ID
- 21674524 [ View in PubMed]
- Abstract
INTRODUCTION: Ryanodine receptor gene (RYR1) mutations have been associated with central core disease (CCD), multiminicore/minicore/multicore disease (MmD), and susceptibility to malignant hyperthermia (MH). METHODS: Patients with muscle symptoms in adulthood, who had features compatible with CCD/MmD, underwent clinical, histological, and genetic (RYR1 and SEPN1 genes) evaluations. Published cases of CCD and MmD with adult onset were also reviewed. RESULTS: Eight patients fulfilled the criteria for further analysis. Five RYR1 mutations, 4 of them unreported, were detected in 3 patients. Compound heterozygosity was proven in 1 case. CONCLUSIONS: To our knowledge, this is the only report of adult onset associated with recessive RYR1 mutations and central core/multiminicores on muscle biopsy. Although adult patients with CCD, MmD, and minimally symptomatic MH with abnormal muscle biopsy findings usually have a mild clinical course, differential diagnosis and carrier screening is crucial for prevention of potentially life-threatening reactions to general anesthesia.