Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000819879 | SCV000960564 | uncertain significance | Fetal akinesia deformation sequence 1; Congenital myasthenic syndrome 9 | 2022-08-16 | criteria provided, single submitter | clinical testing | This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 145 of the MUSK protein (p.Met145Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MUSK-related conditions. ClinVar contains an entry for this variant (Variation ID: 662267). 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 MUSK protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. |
Ambry Genetics | RCV003258996 | SCV003982775 | uncertain significance | Inborn genetic diseases | 2023-05-18 | criteria provided, single submitter | clinical testing | The c.433A>G (p.M145V) alteration is located in exon 4 (coding exon 4) of the MUSK gene. This alteration results from a A to G substitution at nucleotide position 433, causing the methionine (M) at amino acid position 145 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. |