rs374486076
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_014391.3(ANKRD1):c.821A>G(p.Tyr274Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000026 in 1,613,748 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. Y274H) has been classified as Likely benign.
Frequency
Consequence
NM_014391.3 missense
Scores
Clinical Significance
Conservation
Publications
- familial isolated dilated cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- dilated cardiomyopathyInheritance: AD Classification: LIMITED Submitted by: ClinGen
- hypertrophic cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| ANKRD1 | NM_014391.3 | c.821A>G | p.Tyr274Cys | missense_variant | Exon 8 of 9 | ENST00000371697.4 | NP_055206.2 | 
Ensembl
Frequencies
GnomAD3 genomes  0.0000394  AC: 6AN: 152156Hom.:  0  Cov.: 30 show subpopulations 
GnomAD2 exomes  AF:  0.0000159  AC: 4AN: 251078 AF XY:  0.0000147   show subpopulations 
GnomAD4 exome  AF:  0.0000246  AC: 36AN: 1461592Hom.:  0  Cov.: 32 AF XY:  0.0000206  AC XY: 15AN XY: 727100 show subpopulations 
Age Distribution
GnomAD4 genome  0.0000394  AC: 6AN: 152156Hom.:  0  Cov.: 30 AF XY:  0.0000538  AC XY: 4AN XY: 74320 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not provided    Uncertain:2 
- -
Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -
ANKRD1-related dilated cardiomyopathy    Uncertain:1 
This sequence change replaces tyrosine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 274 of the ANKRD1 protein (p.Tyr274Cys). This variant is present in population databases (rs374486076, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with ANKRD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 191602). 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 ANKRD1 protein function with a negative predictive value of 80%. 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. -
Primary dilated cardiomyopathy    Uncertain:1 
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. -
Cardiovascular phenotype    Uncertain:1 
The p.Y274C variant (also known as c.821A>G), located in coding exon 8 of the ANKRD1 gene, results from an A to G substitution at nucleotide position 821. The tyrosine at codon 274 is replaced by cysteine, an amino acid with highly dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. The evidence for this gene-disease relationship is limited; therefore, the clinical significance of this alteration is unclear. -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at