ClinVar Miner

Submissions for variant NM_000540.3(RYR1):c.3382G>A (p.Gly1128Ser)

gnomAD frequency: 0.00001  dbSNP: rs773310568
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001038519 SCV001201989 uncertain significance RYR1-related disorder 2021-09-01 criteria provided, single submitter clinical testing This sequence change replaces glycine with serine at codon 1128 of the RYR1 protein (p.Gly1128Ser). The glycine residue is highly conserved and there is a small physicochemical difference between glycine and serine. This variant is present in population databases (rs773310568, ExAC 0.002%). This variant has not been reported in the literature in individuals affected with RYR1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Fulgent Genetics, Fulgent Genetics RCV002489554 SCV002780151 uncertain significance Central core myopathy; Malignant hyperthermia, susceptibility to, 1; Congenital multicore myopathy with external ophthalmoplegia; Congenital myopathy with fiber type disproportion; King Denborough syndrome 2021-07-14 criteria provided, single submitter clinical testing
All of Us Research Program, National Institutes of Health RCV004004721 SCV004817199 uncertain significance Malignant hyperthermia, susceptibility to, 1 2024-02-05 criteria provided, single submitter clinical testing This missense variant replaces glycine with serine at codon 1128 of the RYR1 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with RYR1-related disorders in the literature. This variant has been identified in 1/251244 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

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