3-123732932-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PP2PP3_Strong
The NM_053025.4(MYLK):c.1480G>A(p.Gly494Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000372 in 1,614,078 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G494A) has been classified as Uncertain significance.
Frequency
Consequence
NM_053025.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYLK | NM_053025.4 | c.1480G>A | p.Gly494Ser | missense_variant | 11/34 | ENST00000360304.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYLK | ENST00000360304.8 | c.1480G>A | p.Gly494Ser | missense_variant | 11/34 | 5 | NM_053025.4 | P4 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152190Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251390Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135874
GnomAD4 exome AF: 0.0000397 AC: 58AN: 1461888Hom.: 0 Cov.: 35 AF XY: 0.0000385 AC XY: 28AN XY: 727244
GnomAD4 genome ? AF: 0.0000131 AC: 2AN: 152190Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74338
ClinVar
Submissions by phenotype
Aortic aneurysm, familial thoracic 7 Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 02, 2021 | This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 494 of the MYLK protein (p.Gly494Ser). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with MYLK-related conditions. ClinVar contains an entry for this variant (Variation ID: 902520). 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 MYLK 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Aortic aneurysm, familial thoracic 7;C5542316:Megacystis-microcolon-intestinal hypoperistalsis syndrome 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Sep 14, 2021 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Dec 06, 2019 | Has not been previously published as pathogenic or benign to our knowledge; In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Not observed at a significant frequency in large population cohorts (Lek et al., 2016) - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at