ClinVar Miner

Submissions for variant NM_000540.2(RYR1):c.13949T>C (p.Leu4650Pro) (rs118192138)

Minimum review status: Collection method:
Minimum conflict level:
ClinVar version:
Total submissions: 3
Download table as spreadsheet
Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000119493 SCV000886062 likely pathogenic not provided 2018-04-06 criteria provided, single submitter clinical testing The p.Leu4650Pro variant has been previously reported in an affected child who also carried p.Lys4724Gln variant on the other allele (Romero 2003). She was born at 37 weeks of gestation with prenatal history of hydramnion, fetal akinesia and breach presentation. She presented with multiple arthrogryposis, severe hypotonia, amyotrophy and hypomimia, and required respiratory mechanical assistance. Muscle biopsy at two months of age showed type I fiber predominance, unique large eccentric cores, some necrotic or regenerative fibers and connective tissue increase. At age 5, she was reported to have delayed motor development, ptosis and strabismus (Romero 2003). The p.Leu4650Pro variant is listed in ClinVar (Variation ID 65961). Additionally, in vitro functional studies with p.Phe1528Leu demonstrated that this variant results in excitation-contraction uncoupling by reducing channel opening in the absence of a change in calcium ion permeation (Dulhunty et al.)
GeneReviews RCV000056208 SCV000087297 pathologic Myopathy, Central Core 2010-05-11 no assertion criteria provided curation Converted during submission to Pathogenic.
Leiden Muscular Dystrophy (RYR1) RCV000119493 SCV000154400 not provided not provided no assertion provided not provided

The information on this website is not intended for direct diagnostic use or medical decision-making without review by a genetics professional. Individuals should not change their health behavior solely on the basis of information contained on this website. Neither the University of Utah nor the National Institutes of Health independently verfies the submitted information. If you have questions about the information contained on this website, please see a health care professional.