rs1060500132
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP2PP3_Moderate
The NM_001613.4(ACTA2):c.203C>T(p.Thr68Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,810 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 (★★). Synonymous variant affecting the same amino acid position (i.e. T68T) has been classified as Likely benign.
Frequency
Consequence
NM_001613.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ACTA2 | NM_001613.4 | c.203C>T | p.Thr68Ile | missense_variant | 3/9 | ENST00000224784.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ACTA2 | ENST00000224784.10 | c.203C>T | p.Thr68Ile | missense_variant | 3/9 | 1 | NM_001613.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152080Hom.: 0 Cov.: 31
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461730Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 727162
GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152080Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 74278
ClinVar
Submissions by phenotype
Aortic aneurysm, familial thoracic 6 Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Victorian Clinical Genetics Services, Murdoch Childrens Research Institute | Jul 17, 2023 | Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3B. Following criteria are met: 0104 - Dominant negative is a known mechanism of disease in this gene and is associated with familial thoracic aortic aneurysm 6 (MIM#611788), Moyamoya disease 5 (MIM#614042) and multisystemic smooth muscle dysfunction syndrome (MIM#613834) (PMID: 27551047, 28652363). (I) 0107 - This gene is associated with autosomal dominant disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from threonine to isoleucine. (I) 0251 - This variant is heterozygous. (I) 0302 - Variant is present in gnomAD (v2) <0.001 for a dominant condition (1 heterozygote, 0 homozygotes). (SP) 0502 - Missense variant with conflicting in silico predictions and uninformative conservation. (I) 0600 - Variant is located in the annotated actin domain (DECIPHER). (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0809 - Previous evidence of pathogenicity for this variant is inconclusive. This variant has been classified as a VUS by one clinical diagnostic laboratory (ClinVar). (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 13, 2016 | In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a ACTA2-related disease. This sequence change replaces threonine with isoleucine at codon 68 of the ACTA2 protein (p.Thr68Ile). The threonine residue is highly conserved and there is a moderate physicochemical difference between threonine and isoleucine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at