rs572757800
Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2
The NM_014000.3(VCL):c.1490T>C(p.Ile497Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000235 in 1,614,092 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_014000.3 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_benign. Variant got -6 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000855 AC: 13AN: 152092Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251338Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135868
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1461880Hom.: 0 Cov.: 31 AF XY: 0.0000206 AC XY: 15AN XY: 727242
GnomAD4 genome AF: 0.0000854 AC: 13AN: 152212Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3AN XY: 74428
ClinVar
Submissions by phenotype
Dilated cardiomyopathy 1W;C2750459:Hypertrophic cardiomyopathy 15 Uncertain:3
VCL NM_014000.2 exon 11 p.Ile497Thr (c.1490T>C): This variant has not been reported in the literature but is present in 0.02% (6/24938) of African alleles in the Genome Aggregation Database (https://gnomad.broadinstitute.org/variant/10-75854166-T-C). This variant is present in ClinVar (Variation ID:505024). Evolutionary conservation and computational predictive tools for this variant are unclear. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -
- -
The heterozygous c.1490T>C p.(Ile497Thr) variant in the VCL gene has previously been reported in an individual with left ventricular noncompaction [PMID:33500567] and it has been deposited in ClinVar [ClinVar ID: 505024] as Variant of Uncertain Significance. The c.1490T>C variant is observed in 34 alleles(~0.006% minor allele frequency with 0 homozygotes) in population databases (gnomAD v2.1.1 and v3.1.2, TOPMed Freeze 8), suggesting it is not a common benignvariant in the populations represented in those databases. The c.1490T>C variant in VCL is located in exon 11 of this 22-exon gene, and predicted to replace an evolutionarily conserved isoleucine amino acid with threonine at position 497 of the encoded protein. In silico predictions are inconclusive of the variant's effect[(CADD v1.6 = 24.8, REVEL = 0.581)]; however, there are no functional studies to support or refute these predictions. Based on available evidence this c.1490T>Cp.(Ile497Thr) variant identified in VCL is classified as a Variant of Uncertain Significance. -
not specified Uncertain:1
The p.Ile497Thr variant in VCL has not been previously reported in individuals w ith cardiomyopathy, but has been identified in 4/10184 African chromosomes by th e Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs57 2757800). Computational prediction tools and conservation analysis do not provid e strong support for or against an impact to the protein. In summary, the clinic al significance of the p.Ile497Thr variant is uncertain. -
Cardiomyopathy Uncertain:1
- -
Dilated cardiomyopathy 1W Uncertain:1
This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 497 of the VCL protein (p.Ile497Thr). This variant is present in population databases (rs572757800, gnomAD 0.02%). This missense change has been observed in individual(s) with clinical features of VCL-related conditions (PMID: 33500567). ClinVar contains an entry for this variant (Variation ID: 505024). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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. -
not provided Uncertain:1
In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Reported in association with LVNC in published literature; however, detailed clinical information was not provided (Mazzarotto et al., 2021); This variant is associated with the following publications: (PMID: 33500567) -
Congestive heart failure Uncertain:1
- -
Cardiovascular phenotype Uncertain:1
The c.1490T>C (p.I497T) alteration is located in exon 11 (coding exon 11) of the VCL gene. This alteration results from a T to C substitution at nucleotide position 1490, causing the isoleucine (I) at amino acid position 497 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at