rs878854466
Variant summary
Our verdict is Pathogenic. Variant got 21 ACMG points: 21P and 0B. PS1PM1PM2PM5PP2PP3_ModeratePP5_Very_Strong
The NM_001613.4(ACTA2):c.138G>T(p.Met46Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Pathogenicin ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M46R) has been classified as Likely pathogenic.
Frequency
Consequence
NM_001613.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 21 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ACTA2 | NM_001613.4 | c.138G>T | p.Met46Ile | missense_variant | 3/9 | ENST00000224784.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ACTA2 | ENST00000224784.10 | c.138G>T | p.Met46Ile | missense_variant | 3/9 | 1 | NM_001613.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD4 exome Cov.: 31
GnomAD4 genome ? Cov.: 31
ClinVar
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Jun 01, 2020 | - - |
Aortic aneurysm, familial thoracic 6 Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Sep 10, 2023 | This sequence change replaces methionine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 46 of the ACTA2 protein (p.Met46Ile). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with clinical features of thoracic aortic aneurysms and dissections (Invitae). ClinVar contains an entry for this variant (Variation ID: 664017). 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 expected to disrupt ACTA2 protein function. This variant disrupts the p.Met46 amino acid residue in ACTA2. Other variant(s) that disrupt this residue have been observed in individuals with ACTA2-related conditions (PMID: 30975232; Invitae), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at