ClinVar Miner

Submissions for variant NM_000540.3(RYR1):c.907G>A (p.Ala303Thr)

gnomAD frequency: 0.00002  dbSNP: rs141764906
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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 RCV001050653 SCV001214772 uncertain significance RYR1-related disorder 2022-05-18 criteria provided, single submitter clinical testing This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 303 of the RYR1 protein (p.Ala303Thr). This variant is present in population databases (rs141764906, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with RYR1-related conditions. ClinVar contains an entry for this variant (Variation ID: 847164). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt RYR1 protein function. 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 RCV002489616 SCV002783053 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 2021-11-05 criteria provided, single submitter clinical testing
Color Diagnostics, LLC DBA Color Health RCV003514459 SCV004357270 uncertain significance Malignant hyperthermia, susceptibility to, 1 2023-05-08 criteria provided, single submitter clinical testing This missense variant replaces alanine with threonine at codon 303 of the RYR1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, 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 6/251202 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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