rs199988497
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4_StrongBP6
The NM_053025.4(MYLK):c.1609G>A(p.Val537Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000271 in 1,614,034 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_053025.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYLK | NM_053025.4 | c.1609G>A | p.Val537Ile | missense_variant | 12/34 | ENST00000360304.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYLK | ENST00000360304.8 | c.1609G>A | p.Val537Ile | missense_variant | 12/34 | 5 | NM_053025.4 | P4 |
Frequencies
GnomAD3 genomes ? AF: 0.000256 AC: 39AN: 152204Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.000430 AC: 108AN: 250926Hom.: 0 AF XY: 0.000479 AC XY: 65AN XY: 135642
GnomAD4 exome AF: 0.000272 AC: 398AN: 1461830Hom.: 1 Cov.: 32 AF XY: 0.000276 AC XY: 201AN XY: 727212
GnomAD4 genome ? AF: 0.000256 AC: 39AN: 152204Hom.: 0 Cov.: 33 AF XY: 0.000269 AC XY: 20AN XY: 74360
ClinVar
Submissions by phenotype
Aortic aneurysm, familial thoracic 7 Uncertain:1Benign:1
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. - |
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 24, 2024 | - - |
not provided Benign:2
Likely benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Oct 03, 2023 | - - |
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Jun 17, 2021 | - - |
not specified Benign:1
Benign, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Feb 22, 2021 | Variant summary: MYLK c.1609G>A (p.Val537Ile) results in a conservative amino acid change located in the Immunoglobulin subtype 2 domain of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00043 in 250926 control chromosomes. The observed variant frequency is approximately 8.6-fold the estimated maximal expected allele frequency for a pathogenic variant in MYLK causing Thoracic Aortic Aneurysms And Dissections phenotype (5e-05), strongly suggesting that the variant is benign. To our knowledge, no occurrence of c.1609G>A in individuals affected with Thoracic Aortic Aneurysms And Dissections and no experimental evidence demonstrating its impact on protein function have been reported. Six clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (benign, n=1; likely benign, n=3; uncertain significance, n=2). Based on the evidence outlined above, the variant was classified as benign. - |
Familial thoracic aortic aneurysm and aortic dissection Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 08, 2018 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
MYLK-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Jan 11, 2021 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Connective tissue disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Center for Human Genetics, Inc, Center for Human Genetics, Inc | Nov 01, 2016 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at